Scoping problematic airguns

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

  • The problems
  • Problem 1 — All rifles are droopers!
  • Problem 2 — horizontal alignment
  • Problem 3 — scope eyepiece is in the wrong place
  • What is the solution?
  • Clearance
  • Summary

Today’s report was partly inspired by reader Decksniper, who asked this about the Seneca Aspen rifle:

“I am interested in the shim you used to mount the Bugbuster on the too narrow dovetail. A closeup picture would be helpful.”

I told him I would photograph the shim in the next part about the Aspen, and I will, but this morning (yesterday for you) I was faced with scoping another rifle — the Diana Stormrider Generation II PCP, and it suddenly dawned on me that scoping airguns is one of the biggest challenges I face in writing this blog. As I pondered that it occurred to me that scoping guns is a challenge for all of us. Some may not have realized what a challenge it is because they have become adept in avoiding the problem altogether, but a challenge it is. read more

Air Venturi Match pistol: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Part 1

Air Venturi V10 pistol
Air Venturi’s V10 Match pistol.

This report covers:

  • R10 Match Pistol
  • H&N Finale Match Light
  • Sig Match Ballistic Alloy
  • Discussion
  • Cocking/pumping effort
  • Trigger pull
  • Surprise!
  • What’s happening
  • Summary

I was surprised by the amount of interest the Air Venturi Match pistol generated in Part 1. A lot of you are interested in it, so besides reviewing it in the usual fashion I’m going to show you some things about this pistol and about single stroke pneumatics in general that aren’t widely known or discussed.

Today is velocity day, so I will begin there. Because this is a target pistol I’ll test it with target pellets. It’s rated to 400 f.p.s., so let’s find out what this one does.

R10 Match Pistol

I’ll begin with the RWS R10 Match Pistol pellet that is often extremely accurate in target air pistols and even in air rifles of lower power. In the test V10 they averaged 379 f.p.s. for 10 shots. The low was 377 and the high was 383 f.p.s., so a total spread of 6 f.p.s. Single stroke airguns are usually very stable, so this low spread is not surprising. At the average velocity this pellet generated 2.23 foot-pounds of energy at the muzzle. read more

Shooting round balls at high speed

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

  • Smoothbore Diana 25
  • The $100 PCP
  • The best article
  • Smoothbore rifle
  • Birth of the smoothbore rifle
  • The results
  • All balls spin in flight
  • Consistency
  • What have I just said?
  • Summary

I don’t like to use myself or this blog as an authoritative source, but when I research shooting round balls at high speed I find that I have written more on the subject than any other source. Or maybe not more so much as more that has been verified.

Smoothbore Diana 25

To get you started, read this 5-part report on the Diana model 25 smoothbore. Reading that you will discover several things. First, that smoothbore airguns are accurate out to 10 meters when shooting pellets. Next — it takes the right loading technique to shoot a pellet accurately from that airgun at 10 meters. We also learned that the same gun fell apart when the range was increased to 25 yards and shot the same pellets that were accurate at 10 meters. Finally we saw that round balls in this gun were not accurate at all. read more

Diana model 30 gallery gun: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

Diana model 30 gallery gun
Diana model 30 gallery gun.

A history of airguns

This report covers:

  • Description
  • Caliber 4.4mm
  • The fix
  • Power was intermittent
  • Rifled
  • Discussion
  • Summary

Apparently there have been three Dianas model 30. Blue Book of Airguns calls them out and tells us the differences. Last week there was some confusion about which Diana model 30 airgun I was referring to in a comment, and when I clarified it one of our readers asked for a report. It happened that I then visited a friend who has a model 30 gallery gun, and he told me it wasn’t working. I said I would try to get it working again if I could test it for the blog, so here we go.


The Diana model 30 gallery gun is a spring-piston rifle that uses a bolt to cock the mainspring. It’s similar in function to a great many other bolt-action airguns like the Schmeisser model 33, the Anschütz model 275, the Haenel model 310 that copies the Anschütz, and even the Czech models VZ35 and VZ48. All of those airguns are rifles like this one, but if we expand the list to include smoothbores we have to acknowledge the Mars models 85, 100 and 115. There are probably others I haven’t mentioned. 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

Cool stuff

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

  • The mostest-fastest pellet gun!/li>
  • The mostest-powerfulest
  • How to generate power
  • The deal
  • What does this mean?
  • Summary

I am at Sig today, so I won’t be able to comment as much as usual. I have airguns to test, but today I thought I would do something different. Many of our readers have gotten into modifying their guns, so I will address that today. What works, what “works” and what doesn’t.

The mostest-fastest pellet gun!

There are those who want to see just how fast a pellet can be propelled, so they put together a science experiment that uses helium as the propellant gas. They looked on the periodic table and discovered that helium is the gas with the smallest atom that is safe. Hydrogen atoms are smaller, but they remember the Hindenberg disaster. read more

It’s always something!

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

  • Don’t dabble
  • Retail sales
  • Prisoner joke 49
  • Mr. Fix-it
  • Success — sort of
  • Sell your skill
  • Build a better mousetrap
  • What am I saying?

Today I am writing to those readers who think they would like to have a business that deals with airguns. I hear from people all the time who think they would like to be involved in the airgun business. Sometimes they ask for advice. Here it comes, whether or not you asked.

Don’t dabble

The first thing I look for in a person who wants to get into the airgun business (or any business, for that matter) is passion. Do they have passion for what they say they want to do? If a person tells me they are retired and just want to dabble in airguns I tell them that’s like dabbling in skydiving. At some point you have to jump, and then you DEFINITELY have to pull the ripcord! Skydiving gets real serious real fast. read more