I have shot Plus P through mine without any problems. It is a strong gun! If you put a FLGR and a 24 lb. spring in it it probably could handle 45 Super also? I am going to give it a try sometime. I have been shooting .45 Super with my 1911 Long Slide and kind of like it! It feels just like 10mm and is no big deal! Plus P shoots just fine and does not damage the 97 at all.