9mm major what is it?

[tornado45]

Hi i heard of this on some the other posts.
Is it just 9mm loaded up to ipsc pf 160,could i use my once fired brass then toss it .I have a9x21 race gun and brass is so expensive and hard to find.
i could rebarrel in 9mm and shoot this gun alot more.
Any info on this would be apprecciated especialy on gun set up.
thank you

 

[Mystic Precision]

9mm major usually refers to loading up the 9X19 or 9mm Luger to major performance. That is a very toasty loading and well above SAAMI specs. More like a +P+ type loading ie 124gr at 1300fps or 147gr at 1150fps.

In fully supported tight chambers, correct springs, etc, it is being done 'successfully'. Orig 1911 and Glocks will not handle this.

I wouldn't be surprised if shooters are using SR primers to handle the extra pressure. Certainly reduce your brass costs.

Approach with caution.

Jerry

 

[PH Racing]

Bear in mind that the typical loadings for 9mm major are in supported barrels in 1911 design pistols and loaded long. Some are loaded for P-9/Tangfolio/CZ based pistols and run at very high pressures, I used to load 9X21 in a P9 to the same level. Most comp TF pistols in use are the large frame designed for .38 super and again 9mm major can/will be loaded long for this application. You must use SR primers and powder selection is critical. Typically you would like to see a 124 gr bullet going about 1350fps to give you a buffer. It sucks to be close to the major line and end up low because of a temp or atmospheric difference (alt./humidity etc.) and score minor at a big match.

 

[relliott]

I wouldn't tackle any 9 major loadings until I'd had a chance to do a crap-load of research. Depending on the gun it can be a great way to go, but realize that with the shorter case (than .38 Super or even 9X21) you reduce your load recipe options and the buffer room to screw up. Short cases generally = higher pressures, so you want to be cautious. Also, 9 major tends to leave you with a (much) narrower tuning window to get the guns functioning reliably. Often you will see guys who say their guns run fine, but they will get weird "mystery" jambs every once in a while that they can't diagnose. Basically, you have to be willing to trade a higher maintenance level for cheaper practice.