I didn't buy this gun for woods carry, just doing some research to see if it's an option for some circumstances. Not rushing anything, I have only had it out for about 300 rounds, lots of breaking in to do. I like your idea of the stout recoil spring, that a good idea. And for sure I wouldn't be shooting crazy hot 45acp everyday. The Buffalo Bore loads are 255gr HCFP running 960fps from a 5" barrel, that'll leave a mark (and plenty of power to put down a Black Bear). Not something you would shoot every day in any gun most likely.
But like I said, for now I got my 44 magnum that should do the trick, I'm not looking to buy any more guns.... for now, so 10mm is not an option. 454 makes sense if you are hunting or in Brown Bear country, but I load my 44 with a 240gr SWC truckin around 1200fps, plenty of stomping power but not so much recoil that it blurs the sight picture (I think 1200fps is the sweet spot).
But it sounds like there aren't any bullet restrictions for the 97B. Just like any other gun, hotter ammo = faster wear and tear. If anyone know something CZ specifically says let me know, I would depreciate it. Maybe I should read the manual, lol.
Still, I think a lot of people underestimate what a big heavy hard cast bullet can do.
... but a 230gr 45acp going 1000fps isn't?
A lot of people underestimate how deap a heavy hard cast flat pointed bullet will penetrate.
Most of your 230gr .45 is 850-900 feet/sec.
A 230gr at 1000 is FAST. You're right, that's a heck of devastating load. I just wouldn't want to shoot it in my 97B.
I've seen accounts of people with 1911s using stout loads with particularly heavy bullets damaging the weapons because the weapons weren't designed for it. In the case of the 97B, we had someone here in the forums a couple of years ago who bought one used, and the recoil spring housing was cracking/peeling off the slide, and the only apparent explanation was someone battering it with overly-stout ammo.
I'm not one of those guys who thinks you shouldn't walk into bear country with anything less than a Redhawk in .454 Casull, but maybe 10mm in a gun built to deal with it.
And if you plan on going forward with that load in your 97, may I recommend a stouter recoil spring to protect your pistol.
Food for thought.