I'm strongly considering have the .30-30 rebored to .356 Winchester.
Bad idea. The .307, .356, and .375 are on a slightly different action with beefed up sidewalls to handle the extra pressure. If you look down on one from above you'll see a bulge / beefed up area where the locking lugs ride which is not present on the standard model 94s.
If you want to mess around with a std .30-30 action, .38-55 is probably easiest. Either .30-30 or .38-55 could be necked to .35 ... it's been done. Stick with standard pressure.
An option would be to look into the ".35 Lever Power". Never seen one, read about it, intrigued. Brass is formed from a shortened .303 British or .30-40 Krag case.
It's going to get pretty expensive. I think you'd be ahead spending the ridiculous cost for a factory .356.
Tom
