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First time reloading for accuracy

 
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  #8  
Old 09-29-2011, 02:32 PM
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Re: First time reloading for accuracy

When you use the Hornady chamber gauge make sure you press the case part of the gauge firmly into the chamber and hold it there while you loosen the lock screw on the rod and slide the bullet up to the lands...

I do this 5 different times and take an average on the measurement..

I should also add that it's a good idea to have a clean BBL and chamber for this measurement..
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Old 09-29-2011, 09:18 PM
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Join Date: Jun 2011
Location: VA (just outside of Washington DC)
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More pieces to the puzzle

I was correct in my previous post. I'm using 38gn of Varget.

I tried some experiments.

1) I took one of my once fired cases and I seated the bullte to the same depth as some Hornady BTHP I bought
The result was the same. It would chamber but the bolt was hard to unlock and pull back and there was a mark near the base of the bullet.
2) I took a brand new case. Full length resized it (everything I've read says to resize new brass) and seated the bullet to the same depth as the Hornady.
No problems
3) I took a brand new case. Full length resized it and seated the bullet to the length my OAL gauge says (-.008).
No problems at all
4) I took one of the once fired cases and full length resized it. I seated the bullet to the OAL setting (-.008).
No problems at all (I then proceeded to do 3 more the same wan and had no problems)
5) Using a case gauge I checked a) the new case, b) the once fired case full length resized, and c) the once fired case neck sized.
They all were to spec
I am now at a loss. Any thoughts?
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Last edited by msinsabaugh; 09-29-2011 at 09:21 PM. Reason: typos
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  #10  
Old 09-29-2011, 10:11 PM
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Re: First time reloading for accuracy

Kinda sounds like it is directly related to your neck sizing operation or die (just based off your last experiment). Since the marks are only on one side of the bullet, I would guess that your neck die is making some unconcentric necks.? This could be verified with a concentricity gauge.

Sounds like FL sized cases do fine with all seating depths, so for now; I'd set the FL die up just to size some of the neck and try that, this might tell you if it's the neck die.

Hope that helps, gun problems just aint no fun at all!
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  #11  
Old 11-17-2012, 03:49 PM
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Join Date: Nov 2012
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Re: First time reloading for accuracy

Quote:
Originally Posted by BuckSnort View Post
When you use the Hornady chamber gauge make sure you press the case part of the gauge firmly into the chamber and hold it there while you loosen the lock screw on the rod and slide the bullet up to the lands...

I do this 5 different times and take an average on the measurement..

I should also add that it's a good idea to have a clean BBL and chamber for this measurement..
Exactly what I was going to say!!
Yes it is strange how it only rubbed on the one side so something in your process may be amiss or your dies are not in alignment properly.
I have just started playing around with floating the die(not locking it down) as from what I have been told by many is that this will centre everything much better & make a more concertristic round.
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  #12  
Old 11-18-2012, 01:34 PM
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Re: First time reloading for accuracy

Have you tried taking a once fired case and not neck sizing it and seat a bullet in it making sure to leave it plenty long then carefully chambering the round then eject it and measure the OAL and compare that to the OAL that your getting from your Hornady gauge? Make sure and not put any powder or primer in this round. It should give you an idea of the OAL for your chamber. Just a thought.
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