The Beeman R10/HW 85: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

HW 85
Weihrauch HW 85.

Part 1

A history of airguns

This report covers:

  • Crosman Premiers
  • RWS Superdomes
  • H&N Baracuda Match with 5.51mm heads
  • Top speed?
  • Hobbys
  • Firing cycle
  • Cocking
  • Trigger pull
  • Evaluation so far

Today we learn how powerful this smooth-shooting .22-caliber HW85 is. You may remember from Part 1 that I bought this rifle because of its super-smooth tune. So, let’s get right to it.

Crosman Premiers

The first pellet to be tested was the 14.3-grain Crosman Premier. These loaded easily and averaged 678 f.p.s. The range went from 672 to 693 — a spread of 21 f.p.s. At the average velocity this pellet produces 14.6 foot pounds. This was so close to the “magic” velocity of 671 f.p.s., where the weight of the pellet in grains equals the muzzle energy in foot pounds. I mention that because it’s just a handy thing to know.

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Beeman R8: Part 7

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6

A history of airguns

This report covers:

  • New mainspring
  • The compression chamber honing
  • The Rail Lock Compressor
  • Cleaning
  • Piston seal
  • Installed the new seal and mainspring
  • Back in the stock
  • Cocking effort
  • RWS Hobbys
  • RWS Superdomes
  • JSB Exact RS
  • Firing behavior
  • Conclusions so far

The new mainspring and piston seal Pyramyd Air sent for my R8 arrived and I installed them last Thursday. This will document how that installation went and look at the velocity results, plus the powerplant smoothness.

New mainspring

The new mainspring is made from better wire than the stock Weihrauch spring. Gene Salvino has reports of guns with up to 9,000 shots with this spring that have lost little velocity, if any, since installation.

I knew there would be a lot of interest in this mainspring, so I examined it carefully and also photographed it next to the existing spring. The new spring wire is silver colored, where the Weihrauch spring wire is a darker color. The new spring appears to be about one inch longer than the original, but I don’t think it has been scragged.

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Beeman R8: Part 6

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2
Part 3
Part 4
Part 5

A history of airguns

This report covers:

  • Don’t over-lubricate
  • Rail Lock mainspring compressor
  • Degreasing
  • Lube the piston seal
  • Clean the mainspring
  • Finish the assembly
  • What is it like now?
  • Velocity test
  • Discussion

Last Friday’s report set us up for today. I was discussing “tuning” airguns before knowing how they performed. I didn’t do that with this rifle, but that discussion loosened up a lot of minds, and I got many suggestions of what to do with the R8. I wanted to disassemble it and remove most of the “special” grease I had applied, and then Gene Salvino of the Pyramyd Air tech department and I had a long conversation about what was happening with that rifle.

Don’t over-lubricate

Gene said it is very possible to put too much of that grease into a lower-powered spring gun. He said if you do that you’ll get exactly the result I got with the R8 — a reduction of several hundred feet per second in the velocity.

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Beeman R8: Part 5

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2
Part 3
Part 4

A history of airguns

This report covers:

  • Clean and inspect
  • Little wear
  • Install the Rail Lock mainspring compressor
  • Now what?
  • Tip
  • When to take off the compressor
  • Finish threading the end cap
  • The trigger
  • It’s been modified!
  • Installing the trigger
  • Trigger tip
  • How does it feel?
  • RWS Hobbys
  • RWS Superdomes
  • JSB Exact RS
  • What happened?

Today I finish inspecting and cleaning the Beeman R8. I will then assemble it, lubricate it and test it with the same pellets I used before, so we can compare.

Clean and inspect

As I cleaned all the grease off the parts I inspected each of them. The piston and spring guide have not been altered. The mainspring is straight (test it by rolling on a flat surface) and fits the piston and spring guide reasonably well. There is some tolerance between the spring and both those parts, and if I were doing a top grade tune I would make a new spring guide, plus I would either shim the inside of the piston or find a mainspring that fits it closer. I’m not doing that today.

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Beeman R8: Part 4

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2
Part 3

A history of airguns

This report covers:

  • Disassembly begins
  • Remove trigger
  • Unscrew end cap
  • Some words about the Rail Lock compressor
  • Grease everywhere!
  • Remove piston
  • Cleanup
  • Best grease
  • Next
  • Summary

Disassembly begins

Today I take the Beeman R8 apart and we see what’s inside. First the barreled action comes out of the stock. When it does I can show you the articulated cocking link and the part that keeps that link under control.

R8 cocking link
Here is the cocking link. It passes through that bridge that keeps it aligned, and the spring on the right keeps the long link away from the stock. It quiets the linkage.

Remove trigger

With the action free, the trigger is removed from the end cap by pushing out two pins that hold it. The safety and safety spring will also come free.

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Beeman R8: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1
Part 2

A history of airguns

This report covers:

  • RWS Hobby
  • Adjusted the sights
  • JSB Exact RS
  • RWS Superdome
  • The big surprise!
  • Summary

Today we look at the accuracy of the Beeman R8 that I acquired at the Findlay airgun show earlier this month. I’m shooting off a rest at 10 meters, using the open sights. I rested the rifle directly on the sandbag, because it is shooting so smooth.

RWS Hobby

I tried RWS Hobby pellets first. I felt they might do well, given the rifle’s power, though the velocity test revealed they are substandard in this rifle. I should have remembered that, because they didn’t group that well. Ten pellets went into 0.551-inches at 10 meters. I know that’s better than a lot of rifles I’ve tested recently, but I expect more from the R8.

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Beeman R8: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Rail Lock Compressor R8

The Beeman R8 looks like a baby R1.

Part 1

A history of airguns

This report covers:

  • RWS Hobby
  • Shot cycle
  • RWS Superdome
  • Trigger pull
  • JSB Exact RS
  • How does this rifle compare?
  • Cocking effort
  • Next

Well, to say there is a lot of interest in the Beeman R8 would be an understatement! Just as I got a huge interest at the Findlay airgun show where I bought it, this blog has also revealed many shooters who are interested in both the R8 and in the current HW50S that I will now have to test for you. [Update on that. my friend, Mac, did test an HW50S back in 2010.]

I was very excited to test this rifle because it’s one of the smoothest breakbarrels I have every shot. That list includes my Tyrolean R8 and the RWS Diana 45 I tuned for Johnny Hill. Let’s get right to the test.

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