tinker
(.416 member)
02/01/13 09:21 AM
Re: Zihn .62 Flint British Sporting Rifle...

Been out making the rifle mine -- in the snow

Also finally got my Pact Professional chronograph running (note to self: stock lots of fresh 9v batteries...) and got to see how this rifle is doing with some different powder charges.

.600 roundball, .020" patch lubed with Lehigh Valley Lube (didn't really feel like running back inside to get the thicker patches once the chrono got back on line) and Goex FFg

130gr ~1525fps
160gr ~1580fps
180gr ~1825fps (Thor's Hammer..?)

All readings taken at 15' from the muzzle.
I'll put these through a roundball trajectory calculator later on, but for now I'm happy to just have gotten it going in front of a chronograph! I have a sense that the readings will be somewhat different with the thicker patch, and I'm not entirely sure what's up with the slight difference between the 130 and the 160 grain charge - could have been a glitch maybe not. I don't think this is the ideal patch too and I'll do this again with the thicker patches another day and I'll be shooting for groups at the bench.







Cheers
Tinker




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