Crosman DPMS SBR full-auto BB gun: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

Crosman DPMS SBR
Crosman’s DPMS SBR full auto BB gun.

This report covers:

  • What is it?
  • Watch the video
  • The gun
  • Blowback
  • Controls
  • Disassembly
  • Stock
  • Forearm
  • Loading
  • Shot count
  • Bolt holdopen
  • Sights
  • Summary

Today we begin looking at the Crosman DPMS SBR full-auto BB gun. First — the acronyms. DPMS = Defense Procurement Manufacturing Services. WHAT??? It’s a shop that was initially in Osseo, Minnesota and opened in 1985. It started manufacturing parts for military weapons like the M16. It’s now part of a larger conglomerate that’s located in Huntsville, Alabama. SBR = Short Barrel Rifle. Another name for a carbine, and, in this case, the rifle that was shortened was already a carbine.

What is it?

The DPMS SBR is Crosman’s select-fire BB gun that shoots 25 BBs per magazine. Select fire means both full and semiautomatic fire are available via the conventional M16 selector switch. Gun bashers will tell you that AR-15s are automatic, but in fact that is incorrect. Civilians in the U.S. may not purchase full auto firearms without a lengthy process that vets the owner, tying the gun to him by serial number, and costs $200 per firearm so registered. AR-15s are semiautomatic, only, so a selector switch applies to the full auto military platform, only. read more


Diana Stormrider Generation II precharged pneumatic air rifle: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Diana Stormrider II
Diana Stormrider Generation II precharged pneumatic air rifle.

Part 1
Stormrider Gen 1 Part 4

This report covers:

  • Fill
  • RWS Superdome
  • Discharge sound
  • JSB Exact Heavy
  • Chronograph
  • Last pellet
  • Discussion
  • Trigger pull and adjustment
  • Summary

Today we look at the velocity of the .177-caliber Diana Stormrider. I linked to Part 4 of my test of the .22 caliber rifle last year for comparison, but the rifle I’m testing today is a .177-caliber second-generation airgun, where that last test was a first generation. Part 1 of this report discusses the differences.

In Part 1 of this report I made a big deal about this Stormrider’s fill adaptor coming with a male Foster fitting on the end that connects to the hose of most air tanks. However, in re-reading the other report I see that the Gen 1 gun had one, as well, so Diana has thought this through from the very beginning. read more


Sharpshooter rubber band catapult gun: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2
Part 3

A history of airguns

Sharpshooter pistol
The Sharpshooter catapult pistol was made from the early 1930s until the 1980s by as many as 5 different companies. This one was made in the early 1940s.

This report covers:

  • The test
  • Test 1
  • Test 1 continued
  • Discussion
  • Firing behavior
  • What’s next?
  • Test 2 — A modern Sharpshooter
  • More discussion
  • Summary

Today we look at the accuracy of the Sharpshooter catapult pistol. Since there is only one type of ammo for it, I have added something additional to spice up the report. Let’s get to it.

The ad from 1948 said the pistol could hit a fly at 16 feet. Dean Fletcher tested his at a more reasonable 10 feet, which is what I will do. Readers asked me what kind of target I used and today I will tell you. Using a coat hanger, I made a wire target holder that stands up, and wrapped a single sheet of aluminum foil around the edges of the loop at the top. It’s the same target I used for the Daisy Targeteer test. read more


Benjamin Fortitude precharged rifle: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

Benjamin Fortitude
The Benjamin Fortitude precharged air rifle.

This report covers:

  • Second rifle
  • Crosman Premier lites
  • JSB Exact Heavy
  • Trigger
  • Air Arms Falcons
  • Premier lites again
  • Shot count
  • Discharge sound
  • Test target
  • Evaluation

Today we resume our look at the Benjamin Fortitude precharged air rifle. I will summarize where we have been, so folks reading this report for the first time will understand what is happening.

Second rifle

This is the second Fortitude I have tested. Parts 1 and 2 of this report belong to the first rifle. The first rifle’s inlet valve locked up at the end of the velocity test and remained open when I bled the air after the fill. The entire gun exhausted all its air. I tried to fill it several times, just to be sure. So I stopped the test at that point and requested a replacement rifle in the same .177 caliber. While this is Part 3, I will actually run another velocity test today, since this is a brand new airgun. read more


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


2018 Pyramyd Air Cup: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

Field Target meeting
A record 104 shooters receive their orientation briefing from Tyler Patner on the first day of the field target match.

This report covers:

  • The vendors – H&N
  • The vendors – Leapers
  • Public range
  • Gauntlet and Fortitude
  • Sig ASP20
  • More interesting airguns to come
  • Field target
  • Pistol match cancelled
  • World-class airguns
  • More to come

The Pyramyd Air Cup is a public event that combines airgun competitions, a public range, a chance to meet many of the vendors who make the airguns and accessories you read about and, most importantly, a chance to shoot airguns you have seen and heard about but could never try. A day at this event is worth a year of reading on the internet — this blog included.

The Cup was held at the Tusco Rifle Club in Midvale, Ohio, which is about midway between Cleveland and Columbus. It’s convenient to people living in a 500-mile radius, and this year I saw people from all over the U.S., including Florida, California and Hawaii. People had come from Canada and the UK, as well. The H&N general manager, Florian Schwartz, was there, and Tobias Schmidt represented Diana. Both men had come from Germany to be there. read more


Benjamin Fortitude precharged rifle: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Part 1

Benjamin Fortitude
The Benjamin Fortitude precharged air rifle.

This report covers:

  • Point one
  • Crosman Premier lites
  • JSB Exact Heavy
  • Why such a large velocity spread?
  • Air Arms Falcons
  • RWS Superdomes
  • Shot count
  • Cocking effort
  • Trigger pull
  • Inlet valve failed
  • Evaluation so far

Today we look at the velocity of the Benjamin Fortitude. As this is one of the new price point PCPs, this test should be interesting.

Point one

My test rifle leaked down from the initial fill in three hours. I had filled it to 3,000 psi, then set it aside to do other work. When I returned three hours later nearly all the air had leaked out. However when I refilled it, I couldn’t hear a leak. It was apparently slow enough to allow testing, so I proceeded.

Crosman Premier lites

The first pellet I tested was the Crosman Premier 7.9-grain dome. They averaged 885 f.p.s. over 10 shots. The low was 872 and the high was 900 f.p.s. That’s an 18 f.p.s. spread. At the average velocity this pellet produced 13.74 foot pounds of energy at the muzzle. read more