The husband is talking about getting back into USPSA. He is also talking about loading to 9 major so you get more points. I would not be as concerned with this using my all metal 1911 Springfield, but doing this with a polymer gun worries me. Ideas? Thoughts? Modifications that should be done to the gun? (I have a 9c and a 5" Pro)

JMO, I wouldn't do it. Everyone I know that shoots 9mm Major is using a gun specifically designed for it.

__________________
Minimize the variables

One of our shooters put 9mm major in a standard 9mm 1911, and it blew out the bottom of the cartridge.

You MUST have a custom full chamber supported barrel to shoot 9mm major. There is no such barrel for an M&P. It will blow up any brand "combat Tupperware" with possible injury to the shooter.

And 9mm major is ONLY allowed in USPSA OPEN DIVISION. You can't just decide to use it in another division for "extra points."

And here's an example of the $3,000+ guns that shoot 9mm major in USPSA Open Division:
The STI GM « STI INTERNATIONAL

Your 5" M&P Pro 9mm is perfect for USPSA Production Division, using standard ammunition. Production Division is scored MINOR POWER, no matter what caliber is used.

__________________
Science plus Art

Thanks for the replies. I won't let him do that to my Smith and Wessons. My Springfield 1911 is fully supported, yet we would have to have a serious discussion before I let him do that to my "baby". My Springfield and I have been through a lot through the years, including, but limited to having a Superface" round.

Hmm, is this chamber fully supported?



The tapered part of the case is actually recessed inside the chamber.

__________________
Freedom isn't free.

I have a number of shooting "acquaintances" who shoot 9mm major, all of them are shooting purpose built custom guns. They tell me that they only reload their brass 2 more times from new. I've looked at the brass and it isn't pretty. I don't shoot major because I'm old and slow so the extra points aren't going to help me any.

__________________
Minimize the variables

They pretty much wreck 9, 38 & 40. I'll pickup brass at IDPA but avoid at USPSA. Bulged cases that require rolling to get them back in shape, split cases etc. Not worth it to me to shoot USPSA production. 2011 open race gun then ok.

Your concern for your "baby" is quite obvious.
Hey what about your husband's health and safety? lol

__________________
40c FS,9Shield(2)40,9Pro

Lol.. My "baby" (the Springfield 1911) is my first gun I ever purchased. As a matter of fact, I was too young to buy it. My then boyfriend (later husband) had to buy it. The Springfield has had an optic on it and has been converted to a 9x21, it has had a compensator put on it and then converted back to stock (well mostly stock). I had a case explode while shooting it in competition. I did not realize what had happened, the RO stopped me. Then everyone circled around me amazed that I was fine. My baby has been around the block a few times and is still going strong. It is my girls favorite gun and they fight over who gets it when I kick the bucket.
If the darling husband is stupid and hurts himself doing something he should not. I would be concerned of course, but I would be annoyed that he was so stupid. I told him that if he want to shoot major out of the Springfield, fine, if he brakes it he fixes it. If he blows it up, he buys me a new one (which he can't afford). I told him the advise I was given here.. and that I really preferred he did not blow up my M&P's.