i just bought a 12" contender barrel in 25/20 and would like to shoot hornday 75gr vmax bullets.

what are the Min and Max on the powders? and what velocities should i expect?

I have no first hand loads for the contender my loads for a lever action wouldn't do you much good.

If you can narrow your powder choice down I'd be happy to run QL for a couple powders.

Something like:
Lil Gun
296
110
R7 4227
come to mind.

Here's a treasure I found a while back.

http://www.marlinowners.com/fo...25-20-reloaders.html