by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2
Part 3
Part 4
Part 5
Part 7
Part 8

Today’s report is the continuation of a guest blog from reader HiveSeeker about his Crosman 2400KT.

If you’d like to write a guest post for this blog, please email me.

Over to you, HiveSeeker.

Crosman 2400 KT
The 2400KT CO2 carbine is available exclusively from the Crosman Custom Shop.

This report covers:

  • Velocity .22 — Wow!
  • Crosman SSP pellets
  • RWS Hobby pellets
  • The Crosman clan
  • Benjamin Discovery domed magnum pellets
  • Benjamin Discovery hollow point pellets
  • Beeman Kodiak pellets
  • JSB Match Exact Jumbo Monster pellets
  • Noise
  • The most powerful non-PCP air pistols
  • More muzzle energy!
  • B.B.’s Crosman 2240 conversion to air

Velocity .22 — Wow!

Our shots-per-fill and .177 velocity discussion have already tipped my hand — the Crosman 2400KT is a powerhouse CO2 pistol in .22! That’s one of the most important things I have to report in this blog.

I was hoping for velocities over 500 fps in my HiveSeeker .22, and that was what I got with almost everything I tested. The 2400KT posted an average velocity of 573 fps with the middleweight 14.3-grain Benjamin domed magnum. Velocities ranged from 673 fps with the 9.5-grain alloy Crosman SSP, down to 451 fps with the aptly-named 25.39-grain JSB Exact Jumbo Monster. I had definitely attained what I wanted in the velocity department! Go ahead and take a look:

Crosman 2400 KT 22 velocity table
1. B.B. reports that this pellet is identical to the boxed Crosman Premier, with the possible exception of single-die production.
2. B.B. reports that this pellet is identical to the boxed Crosman Premier. From the Benjamin Ultimate Hunting Pellet Assortment (UHPA).
3. From the 500-pellet tin (BHP22).
4. From UHPA.

As with the .177 pellets, I won’t be repeating specific velocities much in the ensuing discussion — you can get that from the above table. Below are some individual comments on only the most interesting of the various pellets tested.

Crosman 2400 KT 22 pellets
Since I want to use the .22 HiveSeeker 2400KT for light small game hunting and pest control, I tested an even wider assortment of pellets to fully evaluate this pistol’s capabilities and potential.

Crosman SSP pellets

I think that 673 fps in any non-PCP .22 pistol is noteworthy — even with an alloy pellet. This was the only loose-fitting pellet of the bunch. It was by far the loudest of all the .22s tested, and louder in this caliber than its little brother was in .177.

RWS Hobby pellets

Another lightweight, the RWS Hobby, posted an average velocity just over the mark at 609 fps — not bad for lead in a .22 CO2 pistol!

The Crosman clan

These five pellets are very similar, and I’ll only comment on two of them. Except for domed or hollow point, they’re identical in nearly every way including weight (14.3 grains). They also performed similarly, except for the rebel of the family, the Benjamin Discovery hollowpoint from the Ultimate Hunting Pellet Assortment (hereafter UHPA). All five pellets (except that Benjamin hollow point UHPA) had average velocities that fell within 5 fps of each other. This is a real testament to Crosman quality control and manufacturing!

Crosman 2400 KT the Crosman clan
Meet the Crosmans! Can you tell the difference? I can’t without a scorecard! From left to right: Crosman Premier ultra magnum, Benjamin Discovery domed magnum (UHPA), Crosman Premier hollow point, Benjamin Discovery hollow point (500-pellet tin BHP22), and Benjamin Discovery hollow point (UHPA).

Benjamin Discovery domed magnum (UHPA) pellets

You’ll recall that this was the representative pellet I chose for the extended shots-per-fill test. When I averaged all the Crosman clan velocities (except the Benjamin hollow point UHPA), the average was 573 fps — exactly what the Benjamin domed magnum scored. So, yes, it does seem to be a very good representative for the group. Muzzle energy was 10.43 ft-lbs.

Benjamin Discovery hollow point (UHPA) pellets

This was the black sheep of the Crosman clan. I actually chronographed it twice because I thought the first test might have been a fluke. It wasn’t. The pellet posted an average velocity of 558 fps. This is only 15 fps lower than the rest of the Crosman clan — not a lot, really — but compared to its tight-knit siblings, this pellet stood apart. This 15 fps makes it stand apart from the pack even more in terms of muzzle energy, at about a half foot-pound less than all the other 14.3-grain Crosman pellets tested here.

Beeman Kodiak pellets

The Beeman Kodiak heavyweight dropped the 2400KT under 500 fps — but at 487 fps, not by much. Spread was tight at 11 fps, and I hope this will translate to consistent downrange accuracy for this slower pellet, especially since this one is traditionally a good hunter. This heavyweight also broke the 11 ft-lb mark in terms of muzzle energy.

JSB Match Exact Jumbo Monster pellets

This pellet is well-named — it’s huge! After fighting to load so many other tipping and flipping pellets in that notorious Crosman breech, it was sheer pleasure loading these big, easy beer cans! At 451, fps this was the slowest pellet, but it also had the only single-digit velocity spread in .177 or .22 — 9 fps. I hope that portends good, repeatable field accuracy for this potential hunter, because it generated the highest muzzle energy of all the other pellets at 11.47 ft-lbs.

Crosman 2400 KT JSB Jumbo Monster
I just had to show you this one! These jumbo beer cans were so easy to load. I’m hoping that the small 9 fps spread means that slow and steady does the job for downrange hunting accuracy.

In summarizing velocity performance for the unmodified .22 caliber 2400KT, all I can say is “Wow!” I was expecting velocities of at least 500 fps out of the box, but this fine little carbine has surpassed all my expectations.


As already mentioned for both calibers, some of the faster pellets were noticeably louder. However, the 18-inch .22 barrel really did seem to lessen the sound level compared to the 10.1-inch .177 barrel. (The very loud .22 Crosman SSP was a noisy exception.) Overall, I would rate the noise to be medium for the .22, and medium to medium-high for the .177. The longer-barreled .22 is definitely more neighborhood-friendly.

The most powerful non-PCP air pistols

In Part 1, I was initially looking at several powerful non-PCP pistols as candidates for my next purchase. When my chronograph started spitting out velocities even higher than I’d hoped for, it prompted me to go back and see how the HiveSeeker 2400KT stacks up against some of those earlier .22 contenders.

My previous finalist was the Browning 800 Express. This pistol posted 441 fps with the Crosman Premier when B.B.’s friend Mac tested the .22 version (Browning 800 Mag — Part 5). I was astonished to discover that the 2400KT was besting “the most powerful spring-piston handgun made” by 130 fps! To be fair, Mac found that this pellet was not a good one for the Browning, and the Express came within 70 fps of the 2400KT with both the RWS Hobby and RWS Superdome. A longer barrel — as we discussed in Part 5 — definitely provides an advantage for the 2400KT. But 70 fps is still a respectable lead!

Though no longer commercially available, the Crosman Outdoorsman 2250XE came closest to the 2400KT in off-the-shelf performance, following only about 25 fps behind with three different pellets (see Crosman Outdoorsman 2250XE: Part 2). I suspect this former Crosman Custom Shop offering is almost identical to my HiveSeeker in powerplant construction.

I also compared the 2400KT’s nearest living (commercially available) relative, the Crosman 2240. The 2400KT surpasses that popular gun by about 120 fps for every pellet tested (Crosman’s 2240 pistol: Part 2).

The table below summarizes some of these .22 air pistol comparisons. If you’re in the market for a powerful .22 pistol but aren’t ready to move up to a PCP, most of the commercially available options will be on this list.

Crosman 2400 KT velocity comparison table
Comparison table of velocities with different pellets for some of the most powerful .22 non-PCP pistols. All data except for Crosman 2400KT is from B.B.’s blog entries unless noted.

1. Pyramyd Air tech shop testing.
2. The Premier tested in the Crosman 2400KT was the Crosman Premier ultra magnum from the 500-pellet tin (LDP22).
3. The Crosman Premier and Beeman Kodiak would not fit in the breech of the Hatsan 25 Supercharger and could not be tested.
4. From the Benjamin Ultimate Hunting Pellet Assortment (UHPA).
5. From the 500-pellet tin (BHP22).

I’d already included barrel length in the table above for the barrel-length-and-velocity discussion, which we covered in Part 5. Some of these stock guns have barrels half the size of the 18-inch HiveSeeker’s; but even if the 2400KT is only faster than its colleagues because of its barrel length, it’s still among the fastest non-PCP .22 pistols you can buy.

Of course, velocity wasn’t the only factor I was interested in. A number of these other pistols, particularly the Browning 800 Express and Webley Alecto Ultra, require very high cocking or pumping effort. My arms, which were begging for a vacation from such calisthenics in Part 1, are happy with my new purchase. The Crosman 2400KT is one power-packed — and easy to use — .22 pistol!

More muzzle energy!

Now that we’ve examined velocity, there are two reasons I want to take a closer look at muzzle energy. First, I’d like to take the HiveSeeker small game hunting. Is it powerful enough for the job? Most modern sources recommend that a hunting airgun post a lower limit of 12 ft-lbs of energy at the muzzle (Hunting with airguns). As you can see from our first velocity table above, the stock 2400KT falls shy of that 12-foot-pound recommendation.

Second, you’ll remember that my 2400KT is replacing my old Crosman 1377, which is now in airgun heaven. As technology has advanced, the standard for a hunting pistol has also kept pace. Pistols that used to be considered competent hunters — like the 1377 — no longer make the grade. So, how much more powerful is my new pistol?

Right about the time I started working on this blog, B.B. posted the vintage BSA Scorpion pistol (BSA Scorpion air pistol — Parts 1 and 2). He included the BSF S20 Match pistol and the Webley Hurricane, mentioning that “in their day, these 3 were considered to be the most powerful air pistols around.” How would they stack up today? Well, that blog mentioned the Beeman P1; and before I knew it, I was tracking down data on many of the historically powerful air pistols!

The table below compares muzzle energy for a number of the more powerful modern and historical non-PCP air pistols. As we saw above, muzzle energy can vary with the same gun. In making my comparison, I tried to stay as close as possible to the Crosman Premier Light in .177 (7.9 grains), and Crosman Premier in .22 (14.3 grains). These are both middleweight pellets in their respective calibers, and they should provide a good representative measure. Where those pellets weren’t used, I chose the closest-weight match.

Crosman 2400 KT muzzle energy comparison table
Comparison table of muzzle energy for some of the most powerful historical and modern non-PCP air pistols. All data except for Crosman 2400KT is from B.B.’s blog entries unless noted.

1. The Crosman Premier was also tested but found to be a poor performer in the Browning 800 Express.
2. Pyramyd Air tech shop testing.

As you can see, the HiveSeeker .22 is more than twice as powerful as my old .177 Crosman 1377, with a muzzle energy of 10.36 foot-pounds compared to 4.65 foot-pounds. That’s definitely more punch! You can also see that .22 airguns tend to have higher muzzle energy than .177s, as in the cases of the dual-caliber Browning 800 Express (1.00 ft-lb difference) and Webley Alecto (1.11 ft-lb difference). The difference between calibers is much wider in the 2400KT, at 4.68 foot-pounds (though with the barrel length difference we’ve already discussed). This wide gap again indicates that the 2400KT in .177 is aimed at something other than maximum velocity; nevertheless, the .177 2400KT still places in the middle of the table, with the yesteryear power trio in B.B.’s BSA Scorpion blog retired to the bottom of the list. Times have changed!

B.B.’s Crosman 2240 conversion to air

You’ll recall that the direction this blog has taken arose in part from a comment that fellow reader G&G posted to B.B.’s Crosman 2240 conversion to air: “I will want to see just how close it comes to being the same as an existing gun you could just purchase.” We’ll finally attempt to answer that question now.

I included B.B.’s modified 2240 in the comparison tables above, even though their main purpose is to compare non-PCP pistols. B.B.’s modifications included the PowerMax HiPAC PCP conversion kit filled to 2250 psi, a new striker spring, steel breech and Crosman 14.5-inch barrel. This setup beat the HiveSeeker by 31 fps with the RWS Hobby, and by only 17 or 18 fps with the Crosman Premier and RWS Superdome. I would say that’s fairly close, but B.B. was only using a 14.5-inch barrel. Our previous discussion in Part 5 shows that he could widen that velocity gap even more with a longer barrel. So, in answer to our original question, the 2400KT approaches the velocities B.B. generated with his HiPAC conversion, but can’t match them — especially if more modding continues.

The Crosman 2400KT still represents an impressive value. For less than the cost of just some of B.B.’s upgrades — not even including the price of the base pistol itself — you get an adjustable-trigger carbine that nears the performance of a 2240 converted to air with a steel breech, longer barrel, and striker spring upgrade. This tells me that Crosman really knows what it’s doing with this pistol. But even if you like to mod, the 2400KT provides a very price-friendly starting point — with a lot of the modding already done for you!

Well, we’ve seen that this pistol can shoot fast. But does it shoot fair? B.B. likes Colonel Townsend Whelen’s quote, “Only accurate guns are interesting.” I’m coming to like that quote more and more, too. In Part 7, we’ll finally decide how interesting the Crosman 2400KT really is!