Precharged pneumatics, regulators and power adjusters: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

This report covers:

    • Power adjustment
    • Striker (hammer) blow
    • Understand?
    • Transfer port control
    • Michael — this is for you
    • Stability
    • Finally — how practical is adjusting power?
    • Summary

    Today I will try to finish my answer to Michael about power adjusters on precharged pneumatics (PCP), which I have broadened to include air regulators. Please read Parts 1 and 2 to see what has gone before.

    Power adjustment

    Michael, there are several things an owner can do to adjust the power of his PCP. A longer barrel will often increase power, but that’s not immediately within the owner’s grasp. We are talking about adjusting power of a specific gun by means of things that are easy to do, without changing or modifying the rifle.

    Striker (hammer) blow

    Power can be adjusted easily by controlling the striker blow to the firing valve. A harder blow will force the valve open wider or for a slightly longer time. Either one of those or both of them means that more compressed air can flow out of the reservoir to power the pellet. As long as the pellet is inside the barrel, the more compressed air that gets behind it to push it, the faster it will go. read more


Remington model 33 single shot rimfire: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Remington 33
Remington’s model 33 single shot .22 was their first bolt action rimfire.

Part 1

A history of airguns

This report covers:

  • The new desire
  • How accurate?
  • Start point
  • 30 minutes later
  • Differences
  • Summary

Happy New Year! May 2018 be a blessed year for each of you!

Today will be a short report, if you don’t mind. No — I didn’t stay up that late on New Year’s Eve. I wrote this last Friday, as is my custom of staying a little ahead of the blog. I am getting ready for the 2018 SHOT Show and a lot is happening, so I’m trying to stay ahead.

Yes, this is still an airgun blog. If you read Part 1 you’ll discover that this report started with a friend from church who had a pest problem. I tried solving it with an airgun, but he was ahead of me and solved it himself with a shotgun. But it got me looking at my old Remington model 33 single shot bolt action .22 rimfire, shooting CB caps. Read Part 1 to catch up. I’ll wait. read more


Precharged pneumatics, regulators and power adjusters: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Part 1

This report covers:

    • Mac’s gun
    • Difference between the Talon and Talon SS
    • Long barrel
    • Air flow is the key
    • The Condor
    • The Freimarked rifle
    • NRA airgun range
    • However…
    • For RidgeRunner
    • Michael

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    It seems like you readers are hot for more information on tuning valves and adjusting power on precharged pneumatics (PCP). Very well. In response to something RidgeRunner said yesterday, I will do Part 2 of this report today.

    Mac’s gun

    It began many years ago with my friend, Earl MacDonald — Mac. He was of the opinion, shared by many airgunners, that a high-velocity .177 caliber pellet will be most accurate at long range because it will drop less over distance. So, he wanted the mostest-fastest .177 ever made. He talked to AirForce, where I worked at the time, and convinced them to let me build him a super-fast .177 Talon from blemished parts. In those days production was smaller than today and we didn’t have as many blemished parts around. Still I managed to find the parts I needed to assemble the gun. read more


Precharged pneumatics, regulators and power adjusters: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

    • Two things
    • What is an air regulator and what does it do?
    • How does the valve behave?
    • So — why have regulators?
    • Result
    • Why you need a chronograph
    • What I have not yet addressed

    Today’s blog was a gift from reader Michael, with several others joining the discussion. Here’s what Michael said last Thursday.

    B.B.,
    I’m not a future TexanSS owner, but I enjoy reading about any model of AirForce air gun. I have considered buying a TalonSS ever since AirForce came out with them, and I’ll keep thinking about one until I someday break down and get one.

    They are accurate, lightweight, cool looking, etc., but to me the greatest appeal is AirForce’s wide ranging power adjustment. To me that is huge. Want to increase shots-per-fill for target practice? Dial it down. Want to rid your side yard of that pesky squirrel but you have a .25 Condor? Dial it down to squirrel power. read more


The Beeman P1 air pistol: Part 7

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6

Beeman P1
Beeman P1 air pistol.

This report covers:

  • The test
  • RWS Hobby
  • RWS R10 Match Pistol
  • Sig Match Ballistic Alloy
  • Crosman Premier light pellets
  • Discussion
  • What comes next?

Today we look at the velocity of the new/old Beeman P1 pistol I tuned for you. If you recall, I wanted to get a few shots on the powerplant first because the pistol acted like it had just been tuned. I got 40+ shots in the accuracy test in Part 6, and, while that isn’t a real break-in, it’s at least a start. Let’s get right to it because I have other things to talk about.

The test

I decided to test the pistol with the same three pellets I used in the first velocity test. That was reported in Part 2. That will give us a direct before/after comparison. I also added the Crosman Premier 7.9-grain pellets that showed so much potential in the last accuracy test. They weren’t in the first velocity test. I’m not testing RWS Superdomes, but you should get a sense of where they fit in when you see what the other pellets did. This is a test of the tuned powerplant — not a test of each and every pellet. read more


Weihrauch’s HW55SF: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

HW 55SF
HW 55SF.

Part 1
Part 2
Part 3
Part 4
Part 5

A history of airguns

This report covers:

  • Rob velocity?
  • H&N Finale Match Light
  • Sig Match Ballistic Alloy
  • Qiang Yuan Olympic
  • RWS R10 Match Pistol
  • Discussion
  • So, what?
  • Cocking effort
  • Firing cycle
  • Summary

Today we look at the velocity of the HW 55SF target rifle I tuned back in November. If you read Part 4 you’ll see that I just applied Tune in a Tube grease (TIAT) to the mainspring and got great results. Some readers ask me to use TIAT over and over again on different airguns, apparently not convinced that it works as well as it does. But when they break down and try it, they see for themselves. This stuff really works!

Rob velocity?

But what does it do to the velocity? This is a low-powered spring rifle and we know that thick grease can rob velocity. We have the baseline velocity data I gathered in Part 2 to compare to, so today I will re-test the rifle with the same pellets. Let’s get right to it. read more


The Beeman P1 air pistol: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2
Part 3
Part 4
Part 5

Beeman P1
Beeman P1 air pistol.

This report covers:

  • The test
  • RWS Hobby
  • Sig Match Ballistic Alloy
  • Smoothing makes a difference
  • RWS Superdome
  • Experience so far
  • Crosman Premier 7.9-grain pellets
  • RWS Meisterkugeln Rifle
  • Summary

Today we are back with the Beeman P1 air pistol I disassembled and lubricated in Parts 4 and 5. I said at the end of that job that I felt the gun was behaving like it had just been tuned, so instead of doing the velocity test next I would shoot it for accuracy. That would give it a chance to break in a little before velocity testing. Today is the accuracy test.

The test

I shot the pistol off a rest at 10 meters, using a 2-hand hold. My hands rested on the bag and the pistol did not touch it. I intentionally did not read the first accuracy test before shooting because I wanted to test this pistol without any bias. I also did something that I thought was very clever. Then I discovered that I had done it in the first accuracy test, as well. Oh, well, when you are old like me, everything is new each day! read more