A forum to talk about Olympic style shooting, rifle or pistol, 10 meters to 50 meters, and whatever is in between. Hosted by
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PostPosted: Fri Dec 15, 2017 4:24 pm 

Joined: Fri Mar 10, 2017 7:34 am
Posts: 118
Location: Copperhill Tennessee 37317
Merry Christmas Grinches!

One of Santa's Elves let slip there's a Colt Gold Cup in my neighborhood.

1. What is rating (#) of reduced recoil spring that comes stock?
2. Anyone have good load data:
2a. Full power spring
2b. Reduced recoil spring?

Looking for opinions on projectile, powder & charge, known chronometer data, et cetera.

I'll follow up on this post with my buddy's load data from his original JOHN GILES 1911 . . . for the contribution to the knowledge of the sport!


PostPosted: Fri Dec 22, 2017 2:41 pm 

Joined: Fri Jun 28, 2013 2:13 pm
Posts: 101
I'm not aware that the NM pistols came with a lighter recoil spring. They have lightened slides which can handle a heavier spring. Majority of the NM pistols do not lock up very tight so they come out of battery fairly easy. For 25 yds you can probably use 3.5gr of BE with either 185/200 gr lswc and a 12# recoil spring. You will have to judge whether or not the slide is battering the frame at all during recoil. A Giles built pistol will have better lock up than your NM and what it likes may be different than what your NM likes. It's always trial and error with recoil springs because not all pistols are created equal. 45 ACP is a forgiving cartridge for accuracy and any load that functions the pistol will easily hold X-ring at 25 yds if the pistol is capable of it. 50 yds is another story.

Have Fun!


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