Tinker,

This is exactly the type of projects that I enjoy. I was going to lay low for a while but I had to post to this one

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I'm at home so got to look through my stuff. I forgot I also have worked up loads for a 25-20. The problem is that I never went beyond 100 grain bullets in any of the small 25's I worked with. However doing some quick scrambling on your benchmarks of 1,500 FPS and 25,000 PSI I would carefully consider trying Accurate 1680 and Reloader #7. Just in some quick figuring you should be able to get about 1600+ from them and keep your pressure right.

I currently have my own use of old in a new way going. I took 9.3x74 cases opened them to a straight case like the old 400 Purdey and chambered some .411 barrels for the resulting case. Currently I'm using adjusted 405 win dies for reloading. Using 40,000 PSI as my limit I'm pushing 400 gr Woodleighs at 2,100 fps. The only problem I have now is Midway is out of Woodleigh 400's. I need to track some down before I can regulate the rifle. Currently I was just shooting it unregulated for load development. Basically a 405 win with an extra 1/2" of case.

Bill