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The trouble with breech plug alteration is cutting into the perimeter seal against the shoulder exposing the threads to fouling migration. I always prefer liner seating ahead of the breech plug shoulder, rifling removal (land removal) up past the liner face penetration. I also want the liner...

Possible but an end fit arbor does not stop the front of the cylinder from contacting the barrel and none of my short arbor guns ever scrubbed the cylinder face. Here is my mid 80s version of Pedersoli's model 1860 that has never been arbor end fit , shoots great and is not loosening up course...

No comparison for smooth function in a Roller or Stevens 44. A strut and coil main spring conversion is light years ahead of the flat springs they are designed with..

The first order of business of any trigger work is safety achieved by full width and reduced depth engagement with square contact in both axis. There should be no hammer movement until the trigger nose releases it. Once this is achieved then the safest method of reducing trigger pull weight is...

It just needs cleaned up on a piece of emery paper on a sheet of glass or in a lathe three jaw with some shims on the jaw ends to not mar the finish. I've done it both ways to clean up the machine marks. It may need the barrel cylinder gap tightened after clean up.

Simply put , leverage increase !

The liners and nipples are not generally what is buggered or corroded but rather the barrel steel threads. WL liners look like a stainless alloy from their appearance which is highly resistant to corrosion. I've not tested them for hardness but I wouldn't be surprised if their Rockwell is...

It's been partially cross threaded at some point and needs drilled and re-tapped into fresh steel. I don't think heli-coiling a safe fix for these pressure fit applications. jIt's

Most open frame guns shoot high and off to one side which means the front sight needs to be elevated and given some windage to hit POA which clears being able to look over the cylinder through the hammer notch. A trick I have used for windage in non dove tailed front sights is to make the...

A bit of gun trivia I thought interesting to know, sort of like the difference between pistol and revolver and end shake from barrel cylinder gap, terms we often use interchangeably but are not actually the same.

It might have been a home made pistol from spare parts. I made one of spare parts I had laying around in the shop including a cut off rifle barrel.

I had to buy one of their extended nipples for my H&A match rifle. It doubles as the nut for attaching my flash guard.

I had to look this up for my own information. The shape of a Walker bolt notch is not a true oval but rather a Geometric Stadium, a rectangle with radius-ed ends.

Very true and important to know !

Concerning steel properties, you can have an alloy with a relatively high psi rating and still have a low shock load resistance. These properties and parameters are established in the laboratory using various test equipment designed to measure the character of an alloy like hardness...

That's the beauty, one can choose any profile they like and have adjustment for windage and elevation. I like this profile and the look personally but should have made the base about .100 wider I think !

This is the best sighting remedy I am aware of for open frame guns along with squaring the notch in the hammer nose.

Sounds like it may have been cross threaded at one time or another much like percussion nipples occasionally are and needs a tap clean out and over sized liner installed. The main thing is not getting a liner blow out here if the threads are buggered., and need redone. Leaks are some times and...

If it were mine I lathe turn a new liner with a tighter thread and replace the leaky one. I made my last one of A-2 tool steel and it is holding up quite well so far.

The shock load figures are what is critical not PSI numbers and the shock load numbers for 12L14 cold rolled is approximately 5 where as barrel certified steel is at least 42 according to the metallurgical report I was quoting. I don't have the documentation of DOM shock loading nmbers but know...