I don't have a 7-08 ....YET! But I have a 7x57 that I'm about to work up a load for a 140 grain bullet of some flavor. It's in a 98 action so it's strong enough for modern pressure level loads. Does a 7x57 use the same powders as the 7-08? I know the case holds a couple more grains water than the 7-08 so it should hold a bit more powder. But is it enough to make a practical difference (like a couple hundred FPS more than the 7-08 )?

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