Depends on the bullet you are comparing it with and the rifle you are shooting it out of. I think you should ask this on the Black Powder forum, you might get more responses.
Paul
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I didn't climb to the top of the food chain to eat carrots! (Ron White)
If you go to www.prbullets.com you can find all that info and much,much more that should answer all your questions about this subject. Hope i helped. vangunsmith