Bill Calfee
Gun Fool
Does the action matter?
CYA friends:
Does the action actually matter, or is rimfire accuracy simply about bullets and barrels?
During my career as a RFBR schmidt, I've always thoroughly tested any device, action, barrel etc., before deciding whether to incorporate it into my guns, or not............( it'd be cool if all component makers would do that, but............)
Anyway, some years ago, I ran a series of tests to determine how the new momentum dependent, PAS ignitioned E Turbo stacked up against the vertical lock-up, SAP ignitioned actions that I was using at that time, in this case a highly blueprinted 40-X and one of my XP-22's, of course very highly blueprinted by their nature.
The barrel for this series of tests was a 6 groove Douglas that I had taper lapped, and shot a bunch in competition, so most of the shine was gone from it...
But, all I was interested in seeing, was whether there was a difference in accuracy when it was fit to a 40-X, my XP-22 and the new E Turbo.
_____________________________
If you study these pictures, I believe you'll see how I managed to fit this barrel to all three actions, without changing the chamber in any fashion, and keeping the exact same head space.....
I did not use extractors in any of the actions during the tests, to keep the test uniform..........
All three actions were shot using my old #1 Slave stock.........
Same scope and mounts, same ammo and same MD setting, the muzzle was stopped.......and all tests were shot the same day, cleaning the barrel for each test exactly the same way...
__________________________________
I'll post all the pictures, then as time goes on I'll list more details about the tests and the final results...
Your friend, Bill Calfee
These two pictures are of the barrel fit to the XP-22 in the conventional way......
Here is how the barrel was fit to the 40-X..
Go to next post for pictures of how the barrel was fit to the E-Turbo.....BC
CYA friends:
Does the action actually matter, or is rimfire accuracy simply about bullets and barrels?
During my career as a RFBR schmidt, I've always thoroughly tested any device, action, barrel etc., before deciding whether to incorporate it into my guns, or not............( it'd be cool if all component makers would do that, but............)
Anyway, some years ago, I ran a series of tests to determine how the new momentum dependent, PAS ignitioned E Turbo stacked up against the vertical lock-up, SAP ignitioned actions that I was using at that time, in this case a highly blueprinted 40-X and one of my XP-22's, of course very highly blueprinted by their nature.
The barrel for this series of tests was a 6 groove Douglas that I had taper lapped, and shot a bunch in competition, so most of the shine was gone from it...
But, all I was interested in seeing, was whether there was a difference in accuracy when it was fit to a 40-X, my XP-22 and the new E Turbo.
_____________________________
If you study these pictures, I believe you'll see how I managed to fit this barrel to all three actions, without changing the chamber in any fashion, and keeping the exact same head space.....
I did not use extractors in any of the actions during the tests, to keep the test uniform..........
All three actions were shot using my old #1 Slave stock.........
Same scope and mounts, same ammo and same MD setting, the muzzle was stopped.......and all tests were shot the same day, cleaning the barrel for each test exactly the same way...
__________________________________
I'll post all the pictures, then as time goes on I'll list more details about the tests and the final results...
Your friend, Bill Calfee
These two pictures are of the barrel fit to the XP-22 in the conventional way......
Here is how the barrel was fit to the 40-X..
Go to next post for pictures of how the barrel was fit to the E-Turbo.....BC
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