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Old 06-17-2013, 01:29 AM   #1
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Default 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?



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Old 06-17-2013, 01:32 AM   #2
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I think you just need to keep shooting.



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Old 06-17-2013, 01:47 AM   #3
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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.

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Old 06-17-2013, 01:55 AM   #4
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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.

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Old 06-17-2013, 02:23 AM   #5
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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

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Old 06-17-2013, 02:46 AM   #6
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I'd look at my mechanics first. But 6" at that distance is a littler wide for me.

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Old 06-17-2013, 03:30 AM   #7
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Quote:
Originally Posted by elfmdl View Post
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.
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Old 06-17-2013, 04:59 AM   #8
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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.

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Old 06-17-2013, 01:45 PM   #9
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Another question
I was loading bullets without a cannelure, would you guys still run it through crimp?

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Old 06-17-2013, 02:12 PM   #10
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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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