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


The Diana model 50 underlever: Part 5

by Tom Gaylord
Writing as B.B. Pelletier

Diana 50
Diana model 50 underlever.

Part 1
Part 2
Part 3
Part 4

A history of airguns

This report covers:

  • Move the rear sight
  • Rear sight move forward
  • Change the sight notch
  • Rear sight adjustability
  • Not finished
  • Some disassembly required
  • Three stock screws
  • Wait a minute!
  • Glue the stock
  • Dry mainspring
  • Assembly
  • Velocity check
  • JSB Exact RS
  • RWS Hobby
  • Cocking effort
  • Summary

To give you guys a break from the Crosman MAR177 today I started exploring the History of Airguns web page. Have you seen how the History of Airguns is laid out now? It’s now a simple timeline. Clicking on the dates brings up the past historical articles.

In checking to see whether they all made it to the timeline, I discovered this report from 2017, in which I mentioned wanting to shoot the rifle with an open rear sight. I never did that, so today is the day. I thought I’d just have to move the rear sight but you know how little projects sometimes expand? This one sure did! This will be the tale of what happened. read more


Crosman MAR 177: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

Crosman MAR
The MAR177 from Crosman.

Part 1
Part 2
Part 3
Part 4
Part 5

History of airguns

This report covers:

  • Sight-in
  • First group
  • Qiang Yuan Olympic pellets
  • RWS Hobby
  • JSB Exact RS
  • Discussion
  • Summary

You asked me to back up to 25 yards with the Crosman MAR177 and today is the day I do it. It should prove to be an interesting report.

Sight-in

Because I was using the iron sights that came with the rifle, I skipped the sight-in at 12 feet and went straight to 25 yards. My sight-in pellet was the Air Arms Falcon that was so accurate in the test at 10 meters.

The first shot went two inches high at 25 yards. After seeing that I adjusted the rear sight down 5 clicks. I had adjusted it up the other day for photography when I was exploring its adjustability and writing Part 5. read more


Peep sights: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2
Part 3

This report covers:

  • First encounter
  • The front sight
  • HOWEVER!!!
  • Irony
  • The deal
  • Problems with the post sight
  • Other front sights
  • Contrarians
  • Dial-a-sight
  • The best front sight insert
  • The clear aperture front sight
  • Summary

Today we will look at the front sight that works with the peep sight. Remember, the whole purpose of the peep sight is to eliminate the rear sight from the equation. So the front sight is of extreme importance.

First encounter

The first peep sight I even looked through was on a Winchester model 52 target rifle in an NRA-run course that taught me how to shoot. While other boys my age (10) were interested in baseball and football,  I was only interested in shooting. So I listened to every word the instructors said and I tried to do what they told me, to the best of my ability.

Winchester 52 rear sight
The Marble target sight on the Winchester 52 seemed remarkable to a 10-year-old boy!
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 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


The Webley Hurricane: Part 5

by Tom Gaylord
Writing as B.B. Pelletier

Hurricane
Webley Hurricane

Part 1
Part 2
Part 3
Part 4

A history of airguns

This report covers:

  • Remember
  • The test
  • H&N Finale Match Light
  • Sig Match Ballistic Alloy 
  • Air Arms Falcon
  • Firing behavior
  • RWS R10 Match Pistol
  • Gamo Match
  • H&N Baracuda with 4.50mm head
  • Summary

Today we see the accuracy of the Webley Hurricane. I have to tell you, this has never been a particularly accurate airgun in the past, so I’m not looking for much today. I will do my best though.

Remember…

No — I am not carrying Mr. Spock’s katra — Star Trek III, The Search for Spock. I want you to remember what I am trying to do with this report.

One thing I’m especially interested in with the Hurricane is how well the Extreme Weapons Grease performs. I used it on all the places where there was galling of the metal. You can read about that in Part 3. Normally I would have used moly grease, but I had a small tube of this stuff that was given to me at some SHOT Show and I decided to see if it was really up to the task. So I’m watching how smoothly the pistol cocks. read more