Shot the .350 for the first time.
It feels like less recoil than the .223. Probably due to lack of the squeezed .22 horrific muzzle blast. It grouped great and laid all the brass right in a neat pile. The un-modded 20 rnd. GI mag did not work. So I ordered a 10-shot Ruger mag for $25.
The factory rated 145/2250 fps ran 2109 fps in my 16". I had pulled some bullets and re-inserted .356" 140 gr. JHP, they averaged 2060 fps, shot fine. I had two 200 gr. that I reduced the factory 18.5 gr. charge of whatever to 16.5 and re-inserted one 0.356" sized bullet and another standard .358 Sierra (actually 0.3565"). Just to test function and get a little bit of a basis, they averaged right at 1700 fps.
Observations:
I think the factory loads are on the lighter side with a faster powder than what can really perform. More toward medium rifle burn rates, actual .223 powders, at minimum old .357 Maximum type. Is there 200-250 fps more there for the 200 gr. JSP? If so we have a mimic .35 Remington for hunting. That would be cool for a cheap to buy straight wall case.
I have lots of fun planned. In my stock are 147 gr. 9mm FN cast as well as the RCBS 200 gr. FNGC, to be coated and shot for speed. I think it should be fruitful and a great little deer/hog gun for anyone who does not like thundering recoil.
While it would clearly work in a handgun like the TC it has no benefits over the .357 Maximum. Actually detraction, no rim and critical case length for headspace. Ditto for a lever action. It's at home in a bolt or semi platform.