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-   -   Pistol grouping (http://www.firearmstalk.com/forums/f30/pistol-grouping-92412/)

elfmdl 06-17-2013 01:29 AM

Pistol grouping
 
I loaded my first batch of .45 acp the other day, when I went to test shoot them I shot from a rest at 50 feet, there were 2 very tight 4 shot clusters about 6 inches apart. Do you guys think that my handloads need a little tweaking or do you think it's the handgun?

Gatoragn 06-17-2013 01:32 AM

I think you just need to keep shooting.

SSGN_Doc 06-17-2013 01:47 AM

Could be mechanical, if the sight shifted or your point if aim shifted. Check your components too. Did you sort brass by brand? Trim your brass all to one length? Different thickness of brass or different lengths can change the crimp pressure. Also different case volumes can affect pressure of the load and then velocity, which would result in different points if impact. You were shooting from a bench with a rest or sandbags right? You do need to take human error out if the equation as well.

aandabooks 06-17-2013 01:55 AM

What gun are you shooting them out of? That will make some difference if that is acceptable accuracy or not. I would keep shooting and tweak a little bit on each group of ammo you make up.

elfmdl 06-17-2013 02:23 AM

Shot from my ruger commander sr1911.
All the brass was the same brand and trimmed to the same length, all the powder charges were weighed, and the OAL was all the same

DrumJunkie 06-17-2013 02:46 AM

I'd look at my mechanics first. But 6" at that distance is a littler wide for me.

SSGN_Doc 06-17-2013 03:30 AM

Quote:

Originally Posted by elfmdl (Post 1278499)
Shot from my ruger commander sr1911.
All the brass was the same brand and trimmed to the same length, all the powder charges were weighed, and the OAL was all the same

Hmm. That at least rules out those variables.

nitestalker 06-17-2013 04:59 AM

A small change in sight alignment with a short barreled firearm produces exaggerated results. You would need to fire a number of strings concentrating on your sights and grip. Firing only a few rounds with an unfamiliar handgun does not offer an answer.:)

elfmdl 06-17-2013 01:45 PM

Another question
I was loading bullets without a cannelure, would you guys still run it through crimp?

aandabooks 06-17-2013 02:12 PM

I only taper crimp my .45 loads. Very light crimp and none of the plated bullets I load have a cannelure. The crimp is really just to turn in the flare that was put on earlier and lightly hold the bullet.


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