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Originally Posted by sltm1
If you load your revolver and compress the bp, what will be different than if you didn't?
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I think that there very well might be a measurable velocity difference for some powders and granulations if a chronograph was used.
And a tight over powder card might also contribute to making a difference since it may act as a more effective gas check than the ball alone.
A loading press also tends to more easily increase the amount of compression especially if it has a longer lever, as does first directly compressing the powder before ramming the ball.
Put all three methods together, the OP card, the loading press and ramming the powder first before the ball, and that should increase the liklihood of a meaurable velocity difference.
But without a chronograph to take precise readings, then the amount of increase in feet per second (if any) would just be anybody's guess.
