The Diana model 50 underlever: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

Diana 50
Diana model 50 underlever.

Part 1
Part 2
Part 3
Part 4
Part 5

A history of airguns

This report covers:

  • The test
  • Sight in
  • RWS Superdomes
  • The trigger
  • RWS Supermags
  • Feel of firing|
  • RWS Hobbys
  • Why shoot only RWS pellets?
  • H&N Baracuda 4.50 mm head
  • Discussion
  • Summary

Today I shoot the Diana model 50 underlever with sporting sights from 25 yards. Let’s see what she’ll do!

The test

I shot indoors from 25 yards off a sandbag rest. I used the artillery hold with the rifle rested on my off hand, about 8-9 inches forward of the triggerguard. The Diana 50 is an underlever, and that steel cocking mechanism makes it heavy up front, so this is the most comfortable way to stabilize it. I shot 10-shot groups at 10-meter pistol targets

Sight in

Because I moved the rear sight forward for this test, I had to sight in the rifle again. The first shot was from 12 feet and impacted at the top of my front sight, so I called it good and backed up to 25 yards. I knew the shots would hit higher from back there, but since the first shot hit at 6 o’clock on the bull and this was a pistol target, I reckoned there was plenty of room. read more


Crosman MAR 177: Part 5

by Tom Gaylord
Writing as B.B. Pelletier

Crosman MAR
The MAR177 from Crosman.

Part 1
Part 2
Part 3
Part 4

History of airguns

This report covers:

  • The test
  • Sig Match Ballistic Alloy
  • What happened?
  • Second group with Sig Match Alloy
  • What to do?
  • Air Arms Falcon
  • The trigger
  • Do triggers affect accuracy?
  • Ten Sig Match Ballistic Alloy
  • RWS Hobby
  • Qiang Yuan Olympic
  • Discussion
  • The rear sight does adjust!
  • Summary

I finally managed to schedule for a minute past midnight, so that is back to normal. Today’s report is a follow-on from last Friday’s report. I am still testing the Crosman MAR177 target rifle’s accuracy with the sights that came with it. And I learned something big today. I hope it will help all of you with your shooting.

Actually, I learned two big things today. I had a stupident that I hope will help the rest of you.

The test

I said at the end of Part 4 that I wanted to test the MAR again, and perhaps with different pellets. That test happens today. read more


Crosman MAR 177: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

Crosman MAR
The MAR177 from Crosman.

Part 1
Part 2
Part 3

History of airguns

This report covers:

  • Sighting in the MAR
  • Scope?
  • Shorten the front sight post
  • Back to sight in
  • The test
  • Gamo Match
  • Trigger
  • Sig Match Ballistic Alloy
  • Qiang Yuan Olympic
  • H&N Match Green
  • RWS R10 Match Pistol
  • Discussion
  • Summary

Today we look at the accuracy of the MAR177 for the first time. But before we do — a saga!

Sighting in the MAR

I wanted to shoot the rifle with the iron sights it came with first. To me putting a scope on a military rifle is a bit redneck, unless that rifle is a sniper rifle. 

I shot from 12 feet and the pellet hit the target 2 inches below the aim point. I knew it would climb when I backed up to 10 meters, but it only climbed a quarter inch. Oh, no — I have to adjust the front sight of an AR for elevation. No military person who has carried the M16 likes to adjust its front sight for elevation. It is a slow and tedious process of pressing down a spring loaded pin and turning the front post one click at a time until its where you want it. The rifle was shooting low so I started adjusting the post down. After three clicks the post bottomed out, as in no more adjustment. read more


Crosman MAR 177: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Crosman MAR
The MAR177 from Crosman.

Part 1
Part 2

History of airguns

This report covers:

  • Baseline with Hobbys
  • Today’s test
  • What is the average?
  • Second page of numbers
  • What does “estimate 601” on page 2 mean?
  • But — what is the average velocity?
  • Photos
  • Pressure gauge and fill pressure
  • Big lesson
  • Balanced valve
  • How do I know the ending air pressure?
  • Air Arms Falcons
  • RWS R10 Match Pistol
  • H&N Finale Match Light
  • Loading problems
  • Loudness
  • Summary

Today I test the velocity of the MAR177 I’m reviewing, and I have a baseline from the 2012 test I did, with which to compare it. Some of you asked me what velocity to expect. Well, it is all in the 6-part review I did on the first MAR177. Look at Part 3 of that series for the velocity test. 

Baseline with Hobbys

In that 2012 test I got an average of 609 f.p.s. from RWS Hobbys and the velocity varied by 32 f.p.s. The low was 593 f.p.s. and the high was 625 f.p.s. I got a shot count of 124 shots on one fill.

Today’s test

Today I shot 160 Hobbys on a fill. The fill pressure ranged from a high of 3200 psi to a low of about 2200 psi — according to my accurate carbon fiber tank gauge. Those starting and ending pressures are well above the pressure range of the first gun (which was 2900 psi to 1600 psi). read more


Crosman MAR 177: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Crosman MAR
The MAR177 from Crosman.

Part 1

History of airguns

This report covers:

  • Why muzzleloading pneumatics and gas guns are extremely dangerous
  • AR with a reservoir
  • Premium quality
  • Receiver difference
  • National Match trigger
  • AR firearm
  • Summary

Why muzzleloading pneumatics and gas guns are extremely dangerous

I am answering this discussion topic today because nobody had figured it out when I wrote up today’s report last Friday. Maybe someone did later, but I will answer it here so everyone understands. And just to let you know — I didn’t figure this out, either. Dennis Quackenbush was kind enough to explain it to me.

A pneumatic or gas gun may leak air or CO2 at any time. If it did, and if its forward escape path was blocked by a bullet in the barrel and the rear path was blocked by o-rings, pressure would build up until something let go. The most likely thing would be the bullet. In other words, a muzzleloading airgun can potentially fire at any time — if it is loaded and if there is a leak. Since a leak can occur at any time unannounced, a muzzle loading airgun is very dangerous. read more


The Haenel 311 target rifle: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Haenel 311
Haenel 311 target rifle.

Part 1
Part 2

History of airguns

This report covers:

  • The test
  • Air Arms Falcon
  • RWS R10 Match Pistol
  • Qiang Yuan Training
  • Gamo Match
  • Adjust sights
  • H&N Finale Match Light
  • Discussion
  • Summary

Today we look at the accuracy of the Haenel 311 target rifle. Let’s get started.

The test

I shot off a sandbag rest at 10 meters. I rested the rifle directly on the bag for the entire test. Only after the test was finished did I check back to my test done in 2011 and discover that I had used the artillery hold on the rifle at that time. So we will see a comparison today, when the rifle is rested directly on the bag.

I shot 5-shot groups so I could test more pellets. At the start I wasn’t too worried about being sighted in, but there came a point in the test when I did adjust the sights. I’ll tell you about it when we get there. read more


Peep sights: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2

This report covers:

Ghost ring
However
Daisy combination sight
The lollipop sight
Buffalo hunters
Zimmerstutzen and Schuetzen peeps
Cheep peeps
Summary

Today we are going to look at the oddities among peep sights. We will start with the ghost ring.

Ghost ring

A ghost ring is a peep sight with a very large hole and very thin sides. Compared to the peeps we have been exploring, the ghost ring is barely there. Let’s see.

Mossberg ghost ring
The Mossberg ghost ring sight pairs with a red ramp front sight — ON A SHOTGUN!

Ghost ring sights are in favor right now because they provide rapid target acquisition, with a slight loss of precision. They are found on tactical shotguns and some handguns where the speed of target acquisition is favored over the last bit of precision. read more