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Brian Pfleuger · November 25, 2012, 02:19 PM

QuickLoad thinks that load would only generate 870fps if standard default barrel friction is included and that's without considering any potential back-pressure from the can.

With default case capacity and OAL, it thinks that load is just 68% case fill, which would be below IMRs starting load calculations.

Real guns almost always have more case capacity than SAAMI standard so it's almost certainly even less than 68% and even lower velocity.

It's hard to say where the line would be and you'll only be guessing without a chrony, but 1,200fps should be somewhere between 11.5 and 14.5gr

10.0gr is just too low.

November 25, 2012, 02:19 PM	#2
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	QuickLoad thinks that load would only generate 870fps if standard default barrel friction is included and that's without considering any potential back-pressure from the can. With default case capacity and OAL, it thinks that load is just 68% case fill, which would be below IMRs starting load calculations. Real guns almost always have more case capacity than SAAMI standard so it's almost certainly even less than 68% and even lower velocity. It's hard to say where the line would be and you'll only be guessing without a chrony, but 1,200fps should be somewhere between 11.5 and 14.5gr 10.0gr is just too low. __________________ Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley