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CO2 IZH MP655 BB and pellet pistol – Part 2

IZH MP655 BB and pellet pistol – Part 2

by B.B. Pelletier

I’m still in the hospital, but my best friend, Mac, has come to my house and is doing some testing at my request. I’m now able to evaluate current airguns again based on his tests. So, let’s do part 2 of the IZH Baikal MP655K.

Part 1

The IZH MP655 is an interesting and uncommon CO2 gun.

I told you in part 1 that this is a different air pistol. And, indeed, it is. It shoots both BBs and pellets. Therefore, I’ll concentrate on BBs only in this report, as there are many different things you haven’t seen before that I’d like to cover.

The MP 655K shoots both BBs and pellets. The BB clip is the one on the left — with the magnet in the center.

BBs load in what we would call the slide in an accumulator on top of the gun. You simply pour them in, keeping the muzzle down. The BB circular clip is installed at the rear of this slide chamber and can be distinguished from the pellet clip by its magnet and an internal step in each hole that precisely orients the BB.

Each slot in the BB clip has a ridge or step to properly align the BBs.

The round object is a pressure plate that pushes the BBs into the BB clip.

The BB mechanism is quite intricate. The arrow points to the BB indexer.

This gun holds up to 100 BBs; and in all testing, it didn’t misfire one time. That means that every time the trigger was pulled, a BB came out the muzzle. That, by itself, is noteworthy.

When you’re done filling the BB accumulator, push the slide backward and don’t overlook the final detent or hump for the slide to click into place. When the slide is moved, a slick gray pressure plate puts pressure on the BBs that are aligned with the circular clip. This plate is what ensures reliable feeding. In part 1, I mentioned that gravity is what the pistol uses. While gravity does play a part, this pressure plate is by far more important and a significant feature that other guns do not have. Also in part 1, I mentioned that the cleaning rod was used to install the clips. But Mac didn’t find that necessary during his tests.

Mac tested the gun with Daisy BBs. All shots that follow were fired double-action. Shot #1 went 372 fps. Shot #2 was 361, #3 was 345 and so on until shot #10 was 290 fps. An interval of 10 seconds between shots was allowed to let the gun normalize to the ambient temperature. On a hot day, you can expect higher numbers than those that I’m going to report. The next 10 shots varied between 294 fps and 316 fps, with an average of about 306 fps. Shots 20-30 ranged from 286 to 305 fps, with an average of 297 fps.

You’re probably thinking that the gun is low-powered and running out of gas. Watch this. Shots 30 through 40 ranged between 300 fps and 334 fps, with an average of about 320 fps. So, the gun is simply seeking where it wants to be. In all, Mac fired 90 shots, ending when the velocity was 253 fps. From shots 50+, the average velocity was below 300 fps.

At one point, Mac got so excited that he cut lose and fired the gun 20 times as fast as he could pull the trigger. Perfect functioning with no failures to feed!

The pistol performs more powerfully in the single-action mode. On one test, the average was 315 fps with a low of 306 and a high of 326. However, after pausing for several minutes, a second string without a new cartridge began at 370 fps. By the end, it had dropped down to 308. So, cooling plays a big part in how this pistol operates. The CO2 valve is isolated from your hand by the gun’s large grip. Therefore, the gun will regulate itself and may even perform different than expected on warm days. My gauge wasn’t able to measure the double-action trigger-pull weight, but the single-action pull was a crisp 5 lbs. Even part of the single-action trigger-pull involves advancing the clip. So, that makes the pull heavier than necessary. The actual single-action trigger-pull is more like 3.5 lbs. after the clip has been advanced.

Removing the CO2 cartridge
The owner’s manual states that you can’t remove the CO2 cartridge unless all the gas has been exhausted. However, Mac discovered that the CO2 cartridge screw has extremely fine threads, and you won’t have to dry-fire your gun until empty. When the gas is lower and you want to change cartridges, slowly unscrew the access plug to exhaust the gas very slowly.

Next time, we’ll take a look at velocity with pellets.

author avatar
B.B. Pelletier
Tom Gaylord is known as The Godfather of Airguns™ and has been an airgunner for over a half-century, but it was the Beeman company in the 1970s that awoke a serious interest in airguns. Until then, all he knew were the inexpensive American airguns. Through the pages of the Beeman catalog, he learned about adult airguns for the first time. In 1994, Tom started The Airgun Letter with his wife, Edith. This monthly newsletter was designed to bring serious reports about airguns to the American public. The newsletter and Airgun Revue, a sister magazine about collectible airguns, was published from 1994 until 2002, when Tom started Airgun Illustrated -- the first American newsstand magazine about airguns. Tom worked for three years as technical director at AirForce Airguns, the makers of the Talon, Condor, and Escape precharged air rifles. Today, he writes about airguns and firearms for various publications and websites. He also makes videos, and you'll find short clips embedded in some of his artices on Pyramyd AIR's website. Tom is a consultant to Pyramyd AIR and writes under the name of B.B. Pelletier.

62 thoughts on “IZH MP655 BB and pellet pistol – Part 2”

  1. Reading a lot of post I thought this fit some of us, but I maybe wrong.

    The day that I ever become hip… please shoot me and put me outta my misery!
    Meat Loaf

    My parents used to tell me I was something like this, and I never took it as derogatory. Guess I somewhat embraced it.

    I never fit in. I am a true alternative. And I love being the outcast. That’s my role in life, to be an outcast.
    Meat Loaf


    • rikiB

      In my view, which is admittedly distorted, the coolest people around are the ones who don’t give a damn about trying to be cool or peoples opinions on how cool they are.

      Besides, everybody knows the hippest cats are on the PA blog!

      Now, if you’ll excuse me, I have to run out and get some sleeve tattoos and some Ed Hardy T-shirts.

  2. Matt61,

    Welcome to our world. We buy based on emotion, then rationalize the purchase with logic. Hope you enjoy your new toys.

    Forgot, you are correct that the grips on the Single Six are small, try not to think about it and eventually your pinky will get use to going underneath.

    • Volvo, the pinky is okay. My bigger concern is the trigger finger. The gun seems to force my trigger finger to angle downward to get into the trigger guard rather than coming in directly sideways. I never even thought about this until getting the Single Six. Also, I’m not able to rest the pad of the last joint on the trigger the way I like. The trigger is forced further back to almost the first joint.

      However, I have been practicing my quick draw with dry firing and the pistol does feel quite good that way.

  3. Edith,

    I just wanted to mention how much I like the new blog format when it comes to comments. There haven’t been any public objections lately, so people must be getting used to it.

    What I like the most is how each conversation thread is self-contained instead of sprawling from one article to the next. In the past, I’ve read through 3 or 4 more days worth of comments searching for the answer to a question somebody posted. Now (with RSS), transitioning between articles is so transparent that half the time, I don’t even realize I’m doing it. I just click on the header of the post I want to address, and magically, I’m in the right place.

    Case in point, when I responded to Volvo’s comment above, I didn’t even realize today’s article was posted yet. Sweet.

    Great job!

    – Orin

  4. Orin

    I was going to recommend the exact same two rifles to Ryan, then I scrolled down and saw you had already done it. Thanks for saving me the typing! You also have a TX200… if we looked alike, that would be totally creepy.


    Congratulations on your recent splurge! Man, I was way off. I figured iguana/reptile, dinosaur/reptile so it must be a bigger revolver. Turns out .22lr was the link. I am insanely jealous, but will be eagerly awaiting updates. Guess we now know why you were fishing around for Olympic-quality ammo!

    • S.L.,

      You mean you aren’t aware of our dissociative identity disorder? I suppose it is time to unveil my true identity as your altered ego. Haven’t you noticed that we never post at exactly the same time?

      PS – I’m getting hungry… could you make me a sandwich or something?

      – Orin

    • Thanks, I’ll tell you all about it from the land of the Olympians! One thing I can say is that the instruction manual is thorough. It says I am not supposed to use Anschutz rifles and pistols to aim at or shoot people. AND, I’m not supposed to use them to “beat somebody.” With this kind of thoroughness, how can I go wrong. On the other hand, they seem to have omitted all directions on just how to adjust the buttstock for which I paid an extra $500. It looks complicated, and I’m still working on it.

      • You’re “supposed to know” how to adjust it, I think. FWB doesn’t tell you much either. MEC publishes a book called “Ways of the Rifle” which will probably help, and another called “Air Rifle Shooting” which won’t — because it never talks about where adjustments should come out. Damme! The crucial adjustments will probably be (1) getting the cheek piece exactly right so that your pupil falls *directly* behind the diopter, (2) making sure that the trigger is directly under the centerline of the barrel and not rotated (despite the fact that the gun lets you move it every which way) and falls correctly *when you’ve pulled the trigger*, and (3) if the hand grip is adjustable getting it so that it reinforces the need to pull straight back when you squeeze the trigger. I’ve fiddled a lot with moving the butt plate up and down until I got it right; but changing the length of the pull didn’t matter as much.



      • I might have found a bug in the game as I was able to make 163 bounces in one shot and make 6,191,329 points total for that game.
        I have now shot myself over 20 times in only a few tries, I’ll never EVER shoot a bb gun without safety glasses again lol 😛

        • J-F

          6,191,329?! Dang it, you beat my high score. You have thrown down the gauntlet J-F, but SlingingLead doesn’t back away from a challenge!

          Who would guess that one day you would proudly state that you have shot your eye out 20 times?

          Good idea about the safety glasses. My neighbor shot his Daisy at a wood post at 20 yards and it bounced back with enough force to put a red mark on his ankle for 2 weeks. It is kind of weird that BB guns, thought of as kids toys are inherently more dangerous than the ‘more adult’ pellet guns whose ammunition does not ricochet so much.

  5. Mac,

    Excellent report. Interesting gun. I’m more of a rifle guy but the IZH Baikal MP655K is intriguing. You take very good photo’s as well. Thanks.


  6. Good Mornin: Edith, Tom and Mac.

    I see a synergistic effect in this blog. Tom’s writing, Mac’s testing, and Edith’s editing and skill with the photos, the red arrow.

    I’ll be interested in seeing how the IZH Baikal MP655K stacks up in the accuracy department with pellets.

    Mr B.

  7. Thanks for the collaborative update on the IZH MP655K, I’ve been dying to hear more. I’m happy to hear the BB operation is good, that’s a nice plinking option. You are stringing us along though, since you know we’re all wondering about pellet accuracy. Can’t wait to hear how it compares with the Umarex pistols like the Walther P99. Please post part 3 as soon as possible.

    Get well Tom, thanks for all your help and information.

  8. Well, I guess BB’s gone corporate executive on us. Now he just lays around in his “office” sipping beverages in this really huge expensive building full of technology and delegates work to his “minions”. Come on BB get back to reality! 🙂

  9. Edith
    I’m really enjoying Safari as opposed to IE8. I had asked you previously if you knew of any plug-ins or add-ons that would store logins and passwords but don’t remember seeing a response. Do you know of any? I’ve tried many searches to no avail. So far this is the only drawback I can see. Safari is much faster, I really enjoy it. Any help would be much appreciated!


    • rikib,

      I’m not exactly sure what you’re asking of me. Safari comes with Mac as the default browser. Mine asks me if I want to save a password or login. So, it already has a place to save them. I’ve never added a plug-in.


      • Edith
        Thanks, I guess I’ll have to look further into it as I’m using Safari as a secondary browser on my netbook PC. I need to enter logins and passwords at every site. With IE8 running Norton Identity Safe I can store different logins and passwords for every site I visit without needing to remember them, just a master login to my computer. Thanks for your help!


    • rikib,

      I don’t know about Safari (anything Apple is not welcome in my house) but I’ve had a pretty good experience with Mozilla Firefox. They have a nice and easy to use ‘Save Passwords’ feature which you can protect with a Master Password.


  10. Good Morning Edith,

    Thanks for handling that ingrate/pond-amoeba from that old post about shooting at animals. Sounds like the best remedy for his so-called snake problem would be for him to dive in the water and try to wrestle with the moccasins. Problem solved for us and the snakes! No more Beavis in the boat to bother anyone!

    Exactly the type of individual who needs a license… to be living among the civilized that is.

    Brian in Idaho

    • Anonymous,

      Are you referring to Brian in Idaho’s comment? Hardly a rant. Many of the blog readers get all the messages from the old blog sent to them via email and help us answer comments to lighten the workload for Tom and me. We had some unsavory comments by a person who objected to not being able to use foul language and shoot federally protected snakes. I deleted his message and explained my actions and asked for his understanding. That went over poorly, and additional crass comments were posted…and deleted.


  11. Interesting that IZH is getting into tactical styled pistols although I would prefer a pellet gun to compete with the Walther CPSport. IZH certainly has the accuracy.

    All, I would like your reactions to the following script that I am preparing to send out on a TV sitcom called, The Gunstore

    Matt (on the telephone): Hi, I just wanted to check if my Anschutz 1907 has arrived.

    Gunstore1: Um, I’ll check. What did you say was the name of the rifle?

    Matt: Anschutz.

    Gunstore1: Oh, never heard of any name like that before. He he.

    Gunstore1 (aside to a fellow worker): Hey, did you get a rifle called something like Ansez?

    Whisper Whisper

    Gunstore2 (aside): Yeah it was in the cardboard box.

    Gunstore1 (aside): What color?

    Gunstore2 (aside): You know, cardboard color. Brown.

    Gunstore1 (aside): (Hysterical, childish giggling)

    Gunstore1 (deeper, more official): Ah yes, we have received your rifle but are not able to locate it at the present time. It must be in the back storeroom.

    Vehement whispering and crosstalk in the background.

    Gunstore1: Er, actually, it’s here right in front of me. Yes sir, and ready to pick up.

    • Matt,
      It would be more realistic if at least one of them mentioned to “Matt” that most people like to shoot AR15’s and ask him what he intends to do with a .22:). Also, for the screenplay, you might want to have them discuss their experiences in the service with each other and how they were doing special operations (casting note: they are now just 23-ish, 5’7″ and 250lbs) for 10-15 minutes between every episode of actually paying any attention to the protagonist on the phone. If there is a window near the counter, you might also want to have a shot or two of the clerks making lascivious gestures and noises when an attractive girl walks by outside.

      • That is pretty bad. I can see why you prefer Bud’s. I was agreeably surprised at my latest gunstore when the clerk had to open a cardboard box, and he just used a key, not a bowie knife or a combat knife with a black blade.

        Maybe a stronger TV concept would be The Gunsmith:

        Matt: Hi. I want learn how to take apart the bolt of my Anschutz rifle to insert a dry-fire device in place of the firing pin, and I was wondering if you could help me.

        Gunsmith: [Wild rolling of the eyes and a shrug to indicate it was beyond him.] You don’t need all that. Just buy a snap cap.

        Matt: There are no snapcaps in .22LR that I’ve found.

        Gunsmith: Sure there are. [Paging through a catalog. No .22LR snap caps found.] Well all you need is the soft plastic rounds in the chamber.

        Matt: I’ve read that action proving dummy rounds are no good because they don’t give enough resistance.

        Gunsmith: Hm. Well, why don’t just order another bolt to put your dry fire device into

        …5 minutes later…

        Let’s take a look at the bolt. Why this is easy. You just take off the back. [Eyes bulge again as he puts all his strength into removing the bolt cap.] That’s really on there. What you need is padded pliers. It’s too bad I don’t have mine here.


        I found out upon reading the manual that you just have to unlock the bolt in order to unscrew the bolt cap with ease. That is how close my $2500 rifle came to being wrecked by a madman with padded pliers. As the saying goes, “Trust no one my friend.”

        • Just wondering, are referring to “Bud’s Gun Shop” that is listed on the internet? I have been looking at some of their firearms, good prices. With such good prices was wondering about reliability/customer service? So as I said just wondering if it was the same “Bud’s”?


        • Matt,
          You are a better man than I. I would perhaps have verbally if not physically abused him:). By the way, I loved the instruction not to use your Anschutz to beat anyone: I’m guessing cheap grad-student translation:).

          Its the same. You need to do your research on the online transaction, though, as I’ve only been to the store (it is useful to see what they have on the web).

  12. Hi all,

    I know this is a silly question. But what noise should a spring rifle make when it is being cocked? I was told that the spring shouldn’t make much noise when it is being compressed. Despite being lubed, mine still seems to make a lot of noise, but it seems more like the spring being compressed than anything else. I just want to make sure that I’m not hurting the gun.

    Again sorry if this is a silly noob question. I’m used to CO2 and PCP guns. First springer that I’ve ever bought…

    • I’d say twotalon has it about right. If it sounds like a spring being compressed which is what is supposed to be happening, I would guess that it is okay. Springers have a break-in period when they go through changes. I would wait to see if the noise persists or gets worse.

    • Issus;

      What spring gun are you shooting that makes “noise”?

      It may not be the spring at all depending on the maker and design.

      What is the sound? Scraping? Sliding? Clicking noise? All the above?

      As an example, some GAmo rifles have a roller bearing that follows a groove in the stock (not a real bearing, more like a plastic roller). These can make a scraping noise if mis-aligned or worse, the bearing can fall out when the stock is taken off and then you have the cocking arm scraping the stock or compression tube.

      Let us know!

      Brian in Idaho

      • It sounds like what twotalon wrote. zwooop-click. So it’s most likely the spring. The rifle is a Slavia 631 btw.

        I removed the stock and there is no scraping marks on the barrel. I also had oiled the spring before I shot it with a couple of drops of RWS spring cylinder oil just to be safe as the springs looked a little shiny. Not alot, maybe 3 total, as I know that can be bad.

        Thanks for the advice folks

    • Issus,

      I bought a Diana 350 Magnum a couple of years ago from PA. It made all sorts of noise when it was cocked–scraping, sliding, crunching, etc. Everyone said shoot it for awhile and it’ll get better. Well I did, but it didn’t. Finally called PA, after their 30 day exchange policy was expired, and held the phone next to it and cocked it a few times. They said that it sounded weird to them also and then gave me Umarex’s phone number. Called them and went through the same drill. To make a long story short, gun was sent in to them for a no charge lube job, cause it came from the factory too dry. What a difference in the firing cycle, much smoother and not quite as hold sensative to shoot.

      My advice to you sir, is to have someone listen to it that knows what they’re hearing. Would you please be so kind as to let us know what you find out?

      Mr B.

  13. There’s no crunching or scrapping, thank good. It sounds more like what twotalon wrote. So I think I’m fine.

    The good thing is the gun is not hold sensitive at all. As is it shoots nearly .3″ groups from 10-meters off a bench. I really believe that it is just me being paranoid.

  14. HEY TOM!!!!!! glad to see you….at least in words that is…

    remember to look for car keys baked inside you brand muffin…clothes and money are in the car parked down the block….

    [A|https://www.youtube.com/watch?v=mI9KhPJ-utE&NR=1|GOOD LUCK TOM!!!!]

  15. Looking for some info. I recently replaced my stock 2240 breech with a steel breech. The new breech provides for mounting of accessories but does not state what type of mount it is, dovetail, weaver, etc. Crosman’s site does not appear to have this info easily available. Does anyone know? Looking to mount a red dot or pistol scope. Thanks.


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