Actually, I didn't pressure-test my loads for the .358 in the upcoming article for HANDLOADER (out in maybe 6 weeks for the Internet subscribers). I just assumed that it could safely get about 3% more velocity than the .338 Federal with equal bullet weights, and about 95% of the velocity of the .35 Whelen.
Both of these assumptions come from my "rules" for internal ballistics. I also found a little bit of modern .358 data here and there, which bore my calculations out. I quite easily reached 2400 with a 250-grain bullet, and 2750 with a 200, both in a 22" barrel.
I will not be using any of these loads in my 99 Savage, but they posed no problem at all for a bolt action Ruger Hawkeye.
