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Old August 25, 2012, 07:07 AM   #25
SL1
Senior Member
 
Join Date: November 8, 2007
Posts: 2,001
Mr. Pond,

In all this, I have not seen a mention of accuracy.

If you start looking at the effects of crimp on the group sizes that you get at some decent range like 25 yards (or meters), then I think you will be able to see where too much crimp is affecting accuracy.

If you can find a load where bullet jump is not a problem with tying-up your cylinder and the accuracy has not deteriorated, then your bullet/powder combination seems workable. But, if your accuracy goes bad before your crimp is strong enough to stop the bullets from pulling out too far during recoil, then you need to work with a stronger bullet (jacketed or hard cast) or a powder that produces a less powerful load.

A decent gun with good ammo should be able to produce about 2" groups at 25 yards if you can (properly) steady our hands on a bench when you shoot. (Don't rest the gun itself on the bench, as that will enlarge groups.)

SL1
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