Tuning BB’s Diana 27: Part1

by Tom Gaylord
Writing as B.B. Pelletier

A history of airguns

This report covers:

  • Bias
  • The deal
  • Krytox
  • Diana peep sight
  • Cheap peep
  • Same idea — more elegant
  • The best
  • Ebay
  • BIG teaching point
  • On with the Diana peep
  • So, what?
  • My 27
  • RWS Superpoints
  • Air Arms Falcons
  • Discussion
  • Summary
  • Sad news

Today’s report isn’t quite what the title says. I am going to tune my Hy Score 807/Diana 27 for you, because, after the success I had with Michael’s rifle, I felt it was time to strike while the iron is hot. But reader comments entered the picture as I was extolling the virtues of Tune in a Tube. One reader said he had his best luck with a lubrication product called Krytox, and then several more readers piled on, saying similar things. So, the subtitle of this report could be “The Great Krytox Experiment, or Krytox versus Tune in a Tube.” Because that’s what I plan to do — tune my Diana 27/Hy Score 807 with Krytox to compare it to a Tune in a Tube tune. read more


BSF S54 Match rifle: Part 3

by Tom Gaylord
Writing as B.B. Pelletier

BSF S54
BSF S54 target rifle.

Part 1
Part 2

A history of airguns

This report covers:

  • The test
  • RWS Hobby
  • Resting on the sandbag
  • Artillery hold off hand extended
  • Discussion
  • Adjusted the rear sight
  • Falcon pellets
  • Sig Match Ballistic Alloy
  • JSB Exact RS domes
  • H&N Finale Match High Speed target pellet
  • Something extra
  • Summary

Today we look at the accuracy of the BSF S54 Match rifle. Now, while this rifle is called a Match rifle and did come with a large aperture sight, it’s not a serious match rifle and never was. Sometimes I have guys ask me questions like, “Could it be used in a match?” and I have to answer, “Yes” but they don’t let me finish by saying, “… but it will never win!” You see, some guys are so enraptured by the design of the S54 Match (and that huge rear aperture!) that they want it to be a real match rifle. Other guys own one and don’t want to spend the money for something different. The bottom line is — The BSF S54 Match rifle is not for formal competition! I think you will see that today. read more


BSF S54 Match rifle: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

BSF S54
BSF S54 target rifle.

Part 1

A history of airguns

This report covers:

  • A little more of the BSF Story
  • Today
  • Front sight
  • BINK!
  • Velocity
  • Superpoints for the proof
  • Firing behavior
  • Cocking effort
  • Trigger pull
  • Summary

A little more of the BSF Story

Bayerische Sportwaffen Fabrik (BSF) was established in 1935. They made some airguns before WW II, but after the war is when they really got going. They were located in Erlangen, a town that’s about 15 kilometers from Nuremberg, but today is more like a suburb.

BSF airgun models ranged from youth guns to serious adult guns. Their lowest model was called the Junior that was a plain-Jane youth breakbarrel. Above that the Media came next. It shared a few parts with the Junior like the trigger but it was longer, heavier and more powerful. Think of them as the Diana 23/25. read more


DIY Rifle Stock – Part 5

by Tom Gaylord
Writing as B.B. Pelletier

Today’s report is Part 5 of reader Vana’s excellent report on stock making. This one was delayed because of the SHOT Show, followed by my need to catch up on reports followed by my forgetting I had it — and Part 6 that’s still to come.

If you’d like to write a guest post for this blog, please email me.

And now, over to you, Hank.

Part 1
Part 2
Part 3
Part 4

Slavia 618
This is my original 55 year old Slavia 618 in its new “firewood” stock. I made this one in a “camo” style, using cherry and maple blocks in a random arrangement of the pieces.

This report covers:

  • Preparing for finishing
  • Cabinet Scrapers (aka Card Scrapers)
  • Sandpaper and sanding
  • Steel wool
  • Preparing the surface
  • Smoothing the wood
  • Fancy it up
  • Checkering
  • Stippling
  • Carving
  • Accent pieces
  • Accessories
  • Summary

Preparing for finishing

In this part I will discuss the hand-tools that I use to finish the stock and how I use them. The stock, having been shaped with rasps, files and coarse sandpaper, will have scratches, bumps and flats that need to be smoothed out before I can even think about applying a finish. Electric sanders are useful time savers but you can easily get by without them. In truth, I like sanding, and find the quiet time I spend working on the wood relaxing. read more


BSF S54 Match rifle: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

BSF S54
BSF S54 target rifle.

A history of airguns

This report covers:

  • BSF
  • The S54
  • Trigger
  • Three variations of the S54
  • Two calibers
  • Hang tag
  • Underlever cocking
  • Loading tap
  • Summary

I’m starting a report on the BSF S54 target rifle today. I reviewed this rifle 4 years ago, but I want to look at it more thoroughly this time.

BSF

Bayerische Sportwaffen Fabrik (Bavarian Sporting Weapons Manufacturer) or BSF, as it was known, operated for several decades, both before and after World War II. They were based in Erlangen, Germany, a suburb of Nuremberg. The guns they made were approximately equivalent in quality to Dianas, though in some respects like power they were ahead for a few years. It was BSF that first broke the 800 f.p.s. barrier with their model S55/S60/S70 breakbarrel. I group those models because they were all the same except for their stocks — kind of like the S54 we are looking at today. read more


Tuning Michael’s Winchester 427: Part 9

by Tom Gaylord
Writing as B.B. Pelletier

Diana 27
Michael’s Winchester 427 is a Diana model 27 by another name. The rifle pictured is my Hy Score 807/Diana 27.

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8

A history of airguns

This report covers:

  • Historical baseline data
  • Preparing the rifle
  • Michael’s 427 shooting RWS Superpoints
  • Air Arms Falcons
  • RWS Hobby
  • Discussion
  • Cocking effort
  • Trigger
  • Michael’s barrel is choked
  • What have I learned?
  • A hidden gem
  • Summary

Today we look at the velocity of Michael’s Winchester 427/Diana 27. This will be the end of this report.

I used to think that Tune in a Tube (TIAT) grease increases velocity but now I know from testing that it decreases velocity. Yes, it is a type of grease, but it is so tacky that it slows things down just a little. In rifles of medium power (.22-caliber rifles shooting 750-900 f.p.s.) it can drop the velocity by as much as 40 f.p.s. I haven’t really tested it in a Diana 27 before, so this test will be an eye-opener. read more


Tuning Michael’s Winchester 427: Part 8

by Tom Gaylord
Writing as B.B. Pelletier

Diana 27
Michael’s Winchester 427 is a Diana model 27 by another name. The rifle pictured is my Hy Score 807/Diana 27.

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7

A history of airguns

This report covers:

  • Recap
  • Tune in a Tube
  • But the rear sight…
  • The rifle is fixed!
  • Breech seal shim
  • Pivot bolt locking screw
  • Accuracy
  • Air Arms Falcons
  • RWS Hobby
  • Then I read…
  • Michael’s rifle is accurate
  • The big surprise!
  • Next

Today was a long time coming — much longer than I anticipated. But I learned a lot about problems with the Diana 27 that I have never encountered before, and I now believe I can tune one with ease.

Recap

Just so you remember, I am tuning reader Michael’s Winchester 427 that is a Diana 27 by another name. It looked good on the outside, apart from missing things like the rubber button on the butt and a locking screw for the pivot bolt. The rear sight was a kluge of backwoods “repairs”, but that didn’t impress me until the very end of the job. In fact, I will tell you now that I should have started there first. It was the main source of the rifle’s issues. read more