My main 45 has an 18 pound spring, a two piece spring guide and some trigger work done to it. I like it, very reliable and shoots plenty good. I want my new Hi Standard to be a carry piece for hunting. I plan on using various 230 grain flat nosed bullets at 950-1000 fps in it for short range hog shooting. I have decided I don't care for the extended spring guides so this pistol won't get one. I know I need to get a heavier recoil spring, is a 22 pound spring the one to get? How does one know when his loads are too hot in a 45 Auto? Is there anything else I would need to keep this pistol running shooting warm loads?