ROTR,
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<br>The biggest concern I would have with what you are doing is having a case separate. .30-30 brass is not among the strongest and I don't know what it would be like to be the shooter when a case goes, but the Winchester Model 94 is a pretty loose action and I can imagine hot gas, powder, and brass "flakes" going in every direction.
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<br>Since you are only going to be shooting at short ranges, a couple of hundred FPS slower isn't going to make a practical difference. Besides, you only get one pair of eyes and they must last you for your entire life, if you want to continue to shoot.
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<br>Sincerely,
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<br>Bearrr264