I've loaded thousand of M80 (U.S. spec) equivalent loads with both those powders and a couple others (H335 & AA2230). As popper says if the range to be used at is short then the differences in cases won't matter that much.
However, I do suggest sorting all the Winchester cases out if you are loading for a gas gun. The Winchester cases are considerably thinner than M80 cases in the web area and incipient case head separation can be a real problem. I also suggest the use of a standard 308W RCBS X-die to size the cases if used in a gas gun as case life will be considerably longer. Run a "search" for the test i did on them. I got 20+ loadings per case with LC brass using a M118SP load.
If you've a gas gun with a 22" barrel then you'll want 2750 fps with 145 - 150 gr bullets to duplicate U.S. M80 velocities. Also, with either of those powders with loads at that velocity the pressure will be fine.