My 9mm major open load

[Robert King]

Just thought I would share my new 9mm major open load for anyone looking one. It runs really smooth and is pretty darn clean to shoot. The gun is a Predator Tactical Banshee. Brass is in really good shape after being fired and the primer looks the same as when fired with a minor load. I reloaded the same 10 pieces of brass 4 times and shot it. Still looks really nice. I could probably bump up a 1/2 gr of powder to get a better margin for error, but I am happy with 170.6 PF. With 6.35gr the case is not to full and it does not spill hardly any when rotating the shell plate on a 650.

6.35gr (average of 10 powder drops) Auto Comp

1.129 to 1.131 OAL

Starline Brass

Zero 125gr JHP

1345 low 1390 high 1365 average

PF 170.6

[Hi-Power Jack]

Bob, sounds great. You haven't had any trouble with feeding

at 1.13" OAL?

Most people seem to favor 1.145 - 1.17".

And then need more like 6.8 - 7.0 gr WAC.

I've been using 1.16" and 6.9 gr WAC.

You might be onto something here with the shorter

OAL and faster velocity with less powder???

Edited October 1, 2012 by Hi-Power Jack

[NicVerAZ]

I would like to know what pistol you are shooting in open with 9mm?

Just curious, not confrontational / judgemental.

Thanks

[Robert King]

I would like to know what pistol you are shooting in open with 9mm?

Just curious, not confrontational / judgemental.

Thanks

If that question was for me, I am shooting a Predator Tactical Banshee.

It is throated fairly short, so the most reliable for me is the .129 to .131 range. I tried loads from .120 up to .170 in .010 increments until I found the most reliable. I thought about having it throated deeper to get a longer OAL, but don't need to fix what ain't broke. I figure Matt has forgot more about building a gun than I will ever know. I have also read that most people like it longer and some think longer is safer. I based mine loosely on what DC Ammo is doing for 9mm major.