Rail Gun for testing barreled actions

Bob Dodd

New member
I'm putting together a rail gun for a test fixture. This will be used for barreled actions smaller than we use in unlimited matches. I'm concerned about how much torch should be applied to the screws. Anyone tried this before?
 
Bob,
Some time ago I built a rail for Bob Sicina that mounted the action (Rem. foot print) in a Vee block. Screwed in pretty much like it was mounted on pillars. 1 1/4" & 1.350 barrels shot well but nothing really heavy. When Bob passed on he had asked that it be returned to me. I've used it while testing action designs and it has been an excellent test platform. If a couple photos would help send me an email or PM. It is snowed in the "out building" at the moment but spring is coming.
Gary Amatrudo
 
Bob,

I played with that a little, but never got as far as testing for torque. I stopped because without the heavy barrel, the amount of recoil is tremendous, and I just never pursued it. Do you have some idea to contain this, or are you making a special type of rail?

Jim Carstensen
 
Rail gun for testing barreled action.

I'm planing on making a bushing set up to do this also'
It looks like a good way to check out loads and components .
 
Bushings

Bob: I have one of your rails that came from Max had a set of bushings for this purpose have never used them if you want them let me know Butch
 
I tried two bushings 1' long in the barrel block and didnt work. I was going to bed a Panda in a flat plate but never got around to it. Jerrel
 
I was going to taper the the bore 14 1/2 thousands per inch like on a lv barrel but i could be wrong. Nylon or Nylatron might work. Jerrel
 
Rail gun for testing barreled actions.

I think the way to go is with a long bushing also. I "m not sure about nylon though. I think the bored taperd bush is the way to go or even a split one that will clamp in the block. Let me know what you think about this and how you make out with yours. mine is sitting in the case waiting to be tried out .
 
Epoxy an oversize sleeve on the barrel, block length, Turn the OD
cylindrical for the clampblock. It works, I think the vibrations , thus
tune may be different though. Warm it up and take it off.
 
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