1911a1 shooting high


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351 WINCHESTER
November 25, 2012, 01:47 PM
I have a Rock Island (Phill.) 1911a1 GI gun that shoots pretty high with ball ammo. At 15 yards it's grouping very well, but about 10" high. I'm guessing it needs a higher front sight, but I'm confused that it's shooting so high to begin with. It's not a target gun, but I would like it to shoot to poa.

By the way I don't shoot with a 6 oclock hold. I aim dead on.

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au_prospector
November 25, 2012, 02:27 PM
Just wondering. 15 yards is pretty close, doesnt that pistol have a 5 inch barrel? Might be at zero say 50 yards and a few inches high at 25 yards. Bullet trajectory is an arc and the bullet will rise from the muzzle plane before dropping. Those pistols are pretty accurate at 25 yards and even 50 yards with practice.

gb6491
November 28, 2012, 03:28 AM
...At 15 yards it's grouping very well, but about 10" high. ...
I think being off that much at 15yds. (especially, if you've eliminated shooter error) would be something to take up with Rock Island Customer Service; call and ask to speak with a gunsmith. I've had very positive results dealing with them.

Armscor USA and Rock Island Armory
150 North Smart Way
Pahrump, NV 89145

Phone: (775) 537-1444
Fax: (775) 537-1446

info@armscor.com
support@armscor.com

Regards,
Greg

351 WINCHESTER
November 28, 2012, 09:56 PM
Thank you Greg, I will call them tomorrow.

JRs12Valve
November 28, 2012, 10:14 PM
Take a small metal file, and take a little off the top of the sight. Problem solved, without having to deal with RIA customer service.

Jim Watson
November 28, 2012, 10:24 PM
Sorry, valve. A gun shooting high needs a TALLER front sight, not shorter.

Bolshevik Muppet
December 1, 2012, 03:28 AM
Jim, a shorter rear sight would work just as well assuming it's GI sights.

JRadice45
December 1, 2012, 11:25 AM
Take a look at the fit of the barrel. While the slide is in battery push down on the barrel hood, the barrel should not move down. If it does it may be a fitting problem. In which case I would send it back and hopefully they change the barrel.

351 WINCHESTER
December 1, 2012, 04:15 PM
The fit and lockup on this pistol is amazing. It is much better than any Colt that I bought during the 70's & 80's including their gold cup. There is just a hint of play between the frame and slide and the barrel has zero play.

JRadice45
December 1, 2012, 07:11 PM
Is the slide straight or bent upwards slightly. Check with a straightedge on the slide rails with the slide off the frame. If all else fails call the factory if it is new. One thing popped into my head, does your pistol have a flat or arched mainspring housing?

351 WINCHESTER
December 1, 2012, 07:22 PM
It's a flat mainspring housing which I much prefer.

Jim Watson
December 1, 2012, 09:46 PM
Jim, a shorter rear sight would work just as well assuming it's GI sights.

True, but...
A 10" error at 15 yards is .12" on a 6.5" sight radius. That much filing would not leave anything of a GI rear sight and would wipe out the notch on even a tall rear sight.,

JRadice45
December 2, 2012, 01:02 AM
Last thing I would try would be to have some other people try it and see where they shoot it. Start with the target in close as in 3 yards and hold 6 o'clock on a bullseye so you can keep the front sight in exactly the same place. then do this for 5, 7, 10 etc until you get to 25 yards shooting 5 rounds a target and see if you notice a pattern. Short of this I am out of ideas. My next step would be to call Rock Island.

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