SIG states to use SAAMI ammo in the older carbon slide pistols but the caveat that by recommended that you do not shoot +P loads in a folded carbon slide model.Jack226, I'm afraid if you don't think your current 220 can handle the 10mm, what makes you think it can handle the .45 Super, or .460 Rowland? The .400 Corbon IIRC shouldn't be to big of a problem, pressure wise. If it's an older "folded carbon steel slide", I'd be afraid of using +P .45 ACP in it. The comment that Sig states it will handle all SAAMI ammunition, may be true, but all I ask is was +P even marketed while the older slides were the standard production, plus they used the lighter recoil spring, same as the P226 9mm. It's not that it will "fall apart at the seams", but could hasten it's retirement, due to stress cracking where the breach block contacts the slide.
A Caliber X-Change slide assembly would at least give you a heavier duty forged stainless slide, and comes with the heavier recoil spring.
I like my G20 Gen 4 with 15+1 of 10mm artillery shells and I got it for a great price.That's what i was wondering. Some of the things I've read said the .460 Rowland was easier on the gun than a true 10mm.
None of them had definite answers.
Thanks for the "good" info.
I think it might be easier to get a glock 10mm to satisfy my craving.
The main advantage of 400 CorBon was that it is easily formed from 45 ACP brass so no need to get any special brass, just run the 45 ACP brass into the sizing die and load it up.I plan on loading all of it. This wont be a caliber that gets shot frequently. First I will buy preformed brass. Then possibke form my brass from .45 acp brass.
If you want a slow burn powder maybe 800x.I got a .400 Corbon barrel coming.
Any recommended loads?
Also, looking at a 20- 22# recoil spring .