So I just purchased an STI combat master I am trying to research a ton about 9 Major since this gun was made to shoot them. anyone else here shoot this ammo? I can't find many manufactures that produce this round.
You'll find that High Powers crack slides with +p or higher pressure loads.Search on 9mm major ammo for sale and you will find several brands. It isn't common because it is crowding or exceeding +P pressure levels and the big brand names don't want to tool up for a small market or accept the liability if somebody blew up a Hi Point.
I don't know about "made to shoot them." It is a good stout gun and will hold up as well as any, but except for Cool Factor and Recoil Addiction there is little reason for 9 Major in STI combat master.
I've had it happen to me. I went from one of my Series 70 competition guns to a Browning High Power to "game' the match. First stage with a mover, slide cracked.I heard this. But so far from googling it it happens in guns with high round counts and there currently haven't seen any reports of the combat master cracking slides
Understand one thing, the chamber/barrel puts up with the pressure on a 1911 as long as it's within the specified pressure limits for that barrel. I personally fired a double charge in a Series 70 when I first started using a Star I wasn't that knowable with early on. All it did was blow out both grips and kill a magazine. BUT, I was using a powder for my reloads that's more forgiving on pressure than a lot of the others.My combat master