Umarex Trevox air pistol: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

Umarex Trevox air pistol
The Umarex Trevox is a single shot breakbarrel gas spring air pistol.

This report covers:

  • The test
  • Trigger
  • JSB Exact 10.34-grain
  • Sig Match Ballistic Alloy
  • RWS Hobby
  • Last test
  • Sights
  • Evaluation
  • Summary

Today we test the accuracy of the new Umarex Trevox air pistol. I like this pistol so far, so if it is accurate it is a best buy.

The test

I shot off a sandbag rest from 10 meters. I rested the bottom of the grip on the bag for most of the test to take up the pistol’s weight, though I did try it completely handheld. I will describe both holds as we go.

Trigger

The trigger pull reared its ugly head during this test. The pull is long and stacks up toward the end. I think the pull opened some of the groups a little. read more


Hy Score 816/Diana model 6 pistol: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

A history of airguns

Hy Score 816
This Hy Score 816 is a Diana model 6 recoilless target pistol. This is the photo from the auction.

This report covers:

  • The test
  • Sig Ballistic Match
  • RWS Super Mag
  • Qiang Yuan Trining pellets
  • H&N Finale Match Light pellets
  • RWS R10
  • RWS Meisterkugeln
  • Why is this happening?
  • Proof
  • Summary

Today we see the accuracy potential of the Hy Score 816/Diana model 6 target air pistol I recently acquired. We had a good indication from the first group it shot.

target
This group of 5 Sig Match Ballistic Alloy pellets measured 0.338-inches. Shot at 10 meters.

The test

I shot off a sandbag rest from 10 meters. The Giss counter-recoil system allows for resting the pistol directly on the bag. Despite all my complaining, I shot with the pointed sight insert I showed you in Part 1. I did have a problem with it, but it wasn’t the sight’s fault and I will explain when I get to it. read more


Umarex Trevox air pistol: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Part 1

Umarex Trevox air pistol
The Umarex Trevox is a single shot breakbarrel gas spring air pistol.

This report covers:

  • RWS Hobby
  • Discussion
  • JSB Exact Heavy
  • Sig Match Ballistic Alloy
  • Firing behavior
  • Cocking effort
  • Trigger pull
  • Summary

Today we look at the velocity of the new Umarex Trevox air pistol. I said in Part 1 that this is a pistol to watch, so consider today’s report watching!

RWS Hobby

First up will be the RWS Hobby pellet. I’m going to show you more than just the average velocity today, because there is something more to learn from this test. Let’s look at the first 4 shots.

Shot………..Velocity
1……………..708
2……………..665
3……………..656
4……………..617

The Trevox started out dieseling strongly, like so many spring guns do when they are new. Veteran airgunners are used to this, but it may surprise a newcomer to the hobby. Let’s resume this string at shot 5. read more


Hy Score 816/Diana model 6 pistol: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Part 1

A history of airguns

Hy Score 816
This Hy Score 816 is a Diana model 6 recoilless target pistol. This is the photo from the auction.

This report covers:

  • RWS Hobby
  • Qiang Yuan Training pellets
  • Trigger improved
  • Sig Match Ballistic Alloy
  • Cocking effort
  • Trigger pull
  • I goofed on the trigger
  • Summary

Today we look at the velocity of my new/old Diana model 6 target pistol. There was a lot of interest in this gun last Friday — more than I expected. I really do feel fortunate to have acquired it. Now that I’ve learned that a reseal could cost over $200 with shipping, I really hope this one is doing okay! Let’s find out together.

RWS Hobby

First up is the lead lightweight, the RWS Hobby wadcutter. These are often the fastest lead pellets in an airgun, though my Diana model 5 actually shot a heavier target pellet faster. Let’s see what this pistol does. read more


Diana Chaser air pistol: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Part 1

Diana Chaser air pistol
The Diana Chaser is a new CO2 pistol.

This report covers:

  • Trigger
  • Piercing the CO2 cartridge
  • RWS Hobby
  • Sig Match Ballistic Alloy
  • JSB Exact 8.44-grain dome
  • Cocking
  • Shot count
  • Report
  • Discussion
  • Summary

Today is the day we find out about the velocity of the Diana Chaser air pistol. There are a couple other things to learn today, as well. Let’s go.

Trigger

The first thing I wanted to know was whether that trigger really is adjustable. So I got a fine Allen wrench and started adjusting. Turning the screw in the trigger blade counterclockwise did nothing at all. The pull remained where it was — two stage and around 4 lbs.

Then I turned it in — clockwise. Bingo! I got to the point that the gun couldn’t be cocked. That tells me the trigger is adjustable and also that the adjustment works on the sear contact area. I had to back the screw out several turns and then I got a single-stage trigger that fired at 8 ounces. That’s FAR TOO LIGHT for an inexpensive direct sear! I kept turning and testing until I got a great 2-stage pull. Stage one is 12 ounces and stage two breaks cleanly at 2 lbs. 4 oz. The trigger can’t be “bumped off” which is important for a light trigger — especially one that has a direct sear adjustment. I’m staying where I am. read more


Crosman 102 multi-pump pneumatic repeater: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

Crosman 102
Crosman’s 102 is a .22 caliber multi-pump repeater.

Part 1
Part 2
Part 3

A history of airguns

This report covers:

  • Clearing the jam
  • The jam
  • Assembly
  • Accuracy
  • Re-sighting
  • Crosman Premiers
  • Crosman wadcutters
  • 10-shots
  • Discussion
  • Summary

You may recall that the Crosman 102 jammed last time I tested it and I had to clear it before continuing. I did that and today we will shoot it at 25 yards. First, let’s clear the jam.

Clearing the jam

Crosman designed the 102 to be easy to clear, but without a manual I had to discover it for myself. The rear peep sight slides to either side, revealing a hole through which many jammed pellets can be removed.

Crosman 102 jam hole
Pull the bolt back and rod the pellet out of the breech. It will fall out this hole.

My jam was more involved, though, and I had to partially disassemble the action to clear it. The top receiver cover is held on by one shoulder bolt that has a large thumbscrew head. Remove it and the top cover slides back and off the receiver. The peep sight is attached to the cover by a rivet and comes off with the cover. read more


Crosman 105 “Bullseye” multi-pump pneumatic pistol: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Crosman 105
Crosman’s 105 is a .177 caliber multi-pump air pistol.

Part 1

A history of airguns

This report covers:

  • Test 1. How many pumps?
  • Test 2. RWS Hobby pellets
  • Test 3. Sig Match Ballistic Alloy pellets
  • How stable?
  • The pump stroke
  • Pump force
  • Rear sight fix
  • Trigger pull
  • Summary

Today we look at the power and velocity of the vintage Crosman 105 Bullseye multi-pump pneumatic pistol. I said in Part 1 that I would be surprised if this pistol breaks 450 f.p.s. Well, surprise, surprise! It didn’t even go that fast. And, that is what today’s report is all about, so let’s get started.

Test 1. How many pumps?

I looked through my library and didn’t find a manual for the 105. Crosman has a PDF online, or what they call a manual, but it’s just  a parts list and disassembly procedure. But in that document they do say to test your valve by filling the gun 6 pumps and then looking for bubbles around all the exit places. Oddly I found that 6 pumps is one too many for this particular gun. Let’s see now. read more