Chinese B3 underlever: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

B3
The B3 underlever from China.

Part 1
Part 2
Part 3

A history of airguns

This report covers:

  • The test
  • RWS Superdomes
  • Sig Match Ballistic Alloy
  • Firing behavior
  • RWS Meisterkugeln
  • Qiang Yuan Training pellets
  • Trigger
  • Summary

This is accuracy day! Today we will learn how accurate my new/old Chinese B3 underlever spring-piston air rifle is. This is the rifle with the replaced breech seal that we learned in Part 3 is such an easy fix. Today we see whether it matters.

The test

I shot at 10 meters off a sandbag rest. I used the classic artillery hold with the off hand next to the front of the triggerguard and rested on the sandbag.

I resolved to shoot just 5 shots, unless the pellet looked like it might group. If it did I would go to 10 shots.

RWS Superdomes

First up was the RWS Superdome. The first shot hit the target at the lower edge of the bull, but shot two hit above the 10-ring. I shot the next three shots and then looked at the group and decided this is not the right pellet for this rifle. The 5-shot group later measured 1.37-inches between centers. read more


The Right Now pellet and BB trap

by Tom Gaylord
Writing as B.B. Pelletier*

This report covers:

  • The project
  • Attach the pan to the board
  • Now the duct seal
  • Finished trap
  • Put trap inside a box
  • Time?
  • Bottom
  • Future of the trap

I know that many of you readers are craftsmen, so today’s blog may disturb you a bit. You see, old BB is going to build something. I had a problem and found a very good (read that as cheap) way to solve it. I call it the Right Now pellet and BB trap.

One of the pastors at my church has a 9 year-old son who is very interested in guns. He’s a shy kid until he starts talking about guns. Then his eyes light up and he gets excited. I feel like I am looking at myself, threescore years ago.

I have been giving the boy my old gun magazines and he is soaking them up like a sponge. I also gave him a couple gun books that he and his father read together. His dad is not a gun guy, either, so I’m really working with two pupils here. read more


The development of the .22 rimfire cartridge: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

A history of airguns

This report covers:

  • Two centuries?
  • Reverend Alexander Forsyth
  • Maintainence
  • Danger
  • Percussion cap
  • Flobert
  • Gallery guns
  • Galleries again
  • Recap

Today we begin a subject that lies at the heart of the airgun. Rather than try to defend that statement at this time, I will present evidence as we go, because the body of evidence is both large and spans much of the over two centuries of the rimfire cartridge history.

Two centuries?

Wait a minute, BB. I just read on Wiki that the .22 Short — the first .22 rimfire cartridge — was patented by Smith and Wesson in 1854 and launched to the public in their new revolver in 1857. Today is 2018. That’s only 161 years. How can you say the rimfire cartridge has been in development for over 2 centuries? 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


Weihrauch’s HW55SF: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

HW 55SF
HW 55SF.

Part 1
Part 2
Part 3

A history of airguns

This report covers:

  • Barreled action
  • Trigger out
  • The trigger
  • Remove the end cap
  • Remove the piston
  • Extra parts?
  • Piston seal
  • Inspect the parts
  • Put everything back
  • Tighten the pivot bolt
  • Installing the trigger
  • The test
  • Summary

Many readers wanted to look inside the HW55 SF, and today is the day! This is a Weihrauch spring rifle, and it comes apart like most of them. There are a few differences that I will mention as we go. Let’s get started!

Barreled action

The first step after checking to make sure the rifle is not cocked and loaded is to remove the stock. On this rifle that means loosening three screws — one on the underside of the forearm and the two triggerguard screws. The screws can remain in the stock and triggerguard for safekeeping, but the triggerguard is removed from the stock. I’ll have something more to say about this during assembly. read more


Weihrauch’s HW55SF: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

HW 55SF
HW 55SF.

Part 1
Part 2

A history of airguns

This report covers:

  • Readers impact
  • The test
  • H&N Finale Match Light
  • Now, I zeroed the rifle
  • Sig Match Ballistic Alloy
  • Qiang Yuan Olympic match pellets
  • RWS R10 Match Pistol
  • But wait —
  • Summary

Today we look at accuracy. Because several readers have asked for it, I will re-test the rifle after I have tuned it. I have not decided yet whether I will do a full parts replacement tune, so there may be nothing to compare a Tune in a Tube tune to (say that quickly three times), but I will at least return and re-test the accuracy with the same pellets after I have quieted the action.

Readers impact

Several readers believe that making a spring gun’s action smoother will improve accuracy. It certainly won’t hurt it, but I have never found it to improve. However, I did an extra test today to see if I am doing all the things I can to get all the accuracy this rifle has to offer. We will get to that after the main test. read more


Weihrauch’s HW55SF: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

HW 55SF
HW 55SF.

Part 1

A history of airguns

This report covers:

  • H&N Finale Match Light
  • Sig Match Ballistic Alloy
  • Qiang Yuan Olympic
  • RWS R10
  • Cocking effort
  • Trigger pull
  • Next
  • Summary

Today we look at the velocity of the HW 55SF target rifle. I will tell you now that I was surprised by the performance. This is an air rifle that lives for years in my gun closet and only occasionally gets shot, so I forget how it works. It’s like a brand new airgun every time.

I have owned several HW55s over the years. One was the Custom Match that was their final release of the 55 series. It came out several years after the World Cup matches had switched to FWB 150/300s and Walther LGRs, so it never had a chance to dominate, but it was still quite a target rifle. read more