9mm OAL for accuracy?

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9mm OAL for accuracy?

Post by rreid on 12/11/2017, 5:41 pm

I have a Springfield XDm that I hope to use for CMP matches. Experimenting with some dummy rounds, I found that my max oal is about 1.110" with XTP/HAP and Zero conical JHP before the shoulder hits the lands.  Thought I would try 1.095-1.100" to start, but I'd rather not reinvent the wheel if anyone has the "ideal" oal for this gun. Or is there an ideal distance from the lands that the bullet should be?
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Re: 9mm OAL for accuracy?

Post by james r chapman on 12/11/2017, 5:48 pm

1.079 is what fits in my xdm magazines.
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Re: 9mm OAL for accuracy?

Post by rreid on 12/11/2017, 6:38 pm

I have no issue with the magazines. 1.165" fits in my magazines.
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Re: 9mm OAL for accuracy?

Post by james r chapman on 12/11/2017, 7:03 pm

Well, 1.079 is what I use.

Just checked, that's for my 1911
And that's Atlanta Arms dimension on their match 115 ammo.
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Re: 9mm OAL for accuracy?

Post by rreid on 12/11/2017, 8:00 pm

Ok, thanks Jim
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Re: 9mm OAL for accuracy?

Post by Wmvdg123 on 12/31/2017, 8:09 am

My most accurate load after working up almost a dozen bullets in four different powders was a Hornady 115 grain xtp, 6.0 grains of power pistol, coal of 1.075, and remington primers. This will shoot regular 5 shot 2.0" groups at 50 yards out of my CZ p09. If I'm shooting well groups can drop below 2.0". It shoots better than 115 gr jhp from atlanta arms.
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