Revitalizing a Benjamin 392: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

Benjamin 392
Benjamin 392 multi-pump pneumatic.

A history of airguns

This report covers:

  • The test
  • Crosman Premiers
  • JSB Exact Jumbo Heavys
  • H&N Baracuda Match
  • Well?
  • JSB second test
  • Evaluation
  • Summary

Today is accuracy day for the Benjamin 392 that’s been rebuilt. What you are about to see is stunning! This report will blow your minds!

The test

I looked at the results of the Part 2 velocity test and determined that 4 pumps would be a good number for all pellets. Since this is a multi-pump where each shot takes more time, I decided to shoot 5-shot groups, to see whether one pellet is more accurate that the rest. If I found one, I would then shoot 10 shots with that one at a fresh target. That led to an extremely rare occurrence that’s going to surprise most of you. read more


Revitalizing a Benjamin 392: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Beeman R9

Part 1

Benjamin 392
Benjamin 392 multi-pump pneumatic.

A history of airguns

This report covers:

  • The rebuild
  • The test
  • Test 1
  • Analysis of test 1
  • Test 2
  • Analysis of test 2
  • Test 3
  • H&N Baracuda Match
  • JSB Exact Jumbo Heavy
  • Analysis of test 3
  • Next

Today we look at the Benjamin 392 that has been resealed. The first report was done on the gun as it came from the pawn shop. All I did was oil the pump head with ATF Sealant and then test the gun. It’s been a long time since Part 1, so you may want to read it again. In the last test I said this was the fastest 392 I have ever tested.

The rifle responded well to ATF Sealant. I will run those number with today’s test figures for comparison.

The rebuild

I sent the gun to reader Jeff Cloud for a rebuild. He is the guy who rebuilt my Sheridan Blue Streak a couple years ago. read more


Chinese B3 underlever: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

B3
The B3 underlever from China.

Part 1
Part 2
Part 3
Part 4
Part 5

A history of airguns

This report covers:

  • Pre-work baseline
  • RWS Hobby
  • Harsh firing cycle
  • Rifle is breaking in
  • Air Arms Falcon
  • Sig Match Ballistic Alloy
  • RWS Hobby again
  • Discussion
  • Cocking effort
  • Trigger pull
  • Summary

Today I will test the velocity of the B3 underlever that we cleaned and lubed on Friday. This will be a fantastic learning lesson for all airgunners, because the results are most informative!

Pre-work baseline

If you have been following this report you know I discovered in Part 2 that the rifle wasn’t performing to expectations. In Part 3 I replaced the breech seal and tested the velocity. That gave us a baseline we can use today for a before and after comparison. Let me get to the tests right now.

RWS Hobby

The first pellet to be tested was the RWS Hobby. In Part 3 Hobbys gave an average 617 f.p.s. with a 24 f.p.s. spread. read more


Chinese B3 underlever: Part 5

by Tom Gaylord
Writing as B.B. Pelletier

B3
The B3 underlever from China.

Part 1
Part 2
Part 3
Part 4

A history of airguns

This report covers:

  • Remove the stock
  • Anti-beartrap
  • The piston and sliding compression chamber
  • Removing the mainspring
  • Removing the anti-beartrap device
  • Compression chamber and piston out
  • Cleaning
  • Assembly
  • The trigger
  • Lubrication
  • Does it work?
  • Next
  • Summary

Today I take the Chinese B3 underlever rifle apart and we see inside. This will be a good one.

Remove the stock

The first step is to remove the stock. That’s two forearm screws and one in the triggerguard. Once out, I could see this rifle is very rusty. It’s so rusty that it will take many hours to clean. I don’t have that kind of time so I’m going to clean only what needs to be cleaned.

B3 action
With the action out of the stock you can see rust everywhere! Notice the flat bar in front of the trigger housing. That’s the anti-beartrap. read more


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


Chinese B3 underlever: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

B3
The B3 underlever from China.

Part 1
Part 2

A history of airguns

  • The washers
  • Installing the washer
  • Velocity
  • RWS Hobby
  • Air Arms Falcon
  • Sig Match Ballistic Alloy
  • Cocking effort
  • Trigger pull
  • Evaluation
  • Next

Today we find out how the makeshift faucet washer fix does fixing the B3 breech seal. Before I get on with the test, here’s a word about the piston seal.

The older B3s often have leather piston seals, but as the years passed the Chinese started putting synthetic piston seals in them. From what I have learned, you have to look at yours to be sure, because owners can replace the leather with synthetic.

Given a choice, I would choose leather, just because in a rifle of this power leather should last a long time, and as we know, the Chinese synthetics are not that reliable. I can’t see any advantage for power with either material. Now let’s test the gun and see what happened. 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