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Re: small bore??

Posted by Watson on Sunday, 3 June 2012, at 3:17 p.m., in response to small bore??, posted by Watson Gunderson on Saturday, 2 June 2012, at 5:31 p.m.

These are some good thoughts for sure. I bought a digital caliper and here are the specs. There is differently a difference in diameter. "old ammo" (that will chamber) RN Dia. .450-.451 OAL 2.779 (longer than the ones that will not chamber)

"New Ammo" (that will not chamber) RNFP Dia. .457-.458 OAL 2.517

Both are Black Powder charges both should be about 500 grains

I slugged the bore and I am getting about .456 - .457 (which would seem to be ok for .457)

The new ammo I can see where the grooves are starting to cut into the bullet but again the block will not latch completely.


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