Well, I have used IMR4227 at 18 grs behind a 270 grain lead bullet. It knocks steel rams down at 200, but it doesn't knock 'em into tomorrow. I figure that's somwhere aroung 1500 fps. That's a guess. I'll check and edit this post later if I'm wrong about the velocity.
Oh, BTW, that's out of a 30 inch .38-55 heavy barrel, so I hardly feel it. You may get a different experience from a 14 inch Contender. Even with the lighter bullet I'd back off to 16 or 18 grs and work up. Yes?
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