700X is a very fast powder designed for shotgun which is also useful in pistol calibers. It was never intended for rifle calibers.
I have done it with 40 Gr bullets and a tiny charge of 700X for .22 Mag like performance. Powder position was too sensitive. It worked better in a Hornet case. I wouldn't try heavier bullet than that, and you are on your own in uncharted waters if you try it at all.
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