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Post by tisme on May 30, 2015 6:50:16 GMT
I've been looking at the Hornady concentricty gauge and would like to know if correcting run out is beneficial and if it alters neck tension
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Post by saferalshooter on May 30, 2015 14:06:22 GMT
Hi tisme,
I have one and use it to correct run out in my .260 loads....I also use it to group factory ammo according to run out. I don't know about altering neck tension but it certainly improves my groups and helps to eliminate those pesky fliers.
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Post by dougy on May 30, 2015 14:57:52 GMT
Get a decent seater and your run out wont be worth measuring.  I use a Redding competition Seating Die for a 22.250 and run out is 0.0015 at the most, I have a Forster Comp die for 260 and its not as good as the redding but good enough.  |
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Post by tisme on May 30, 2015 20:23:52 GMT
Cheers for the replies. I already use redding and foster dies so it might be a waste of money although there is a kit to use it to measure neck case thickness as well so........
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Post by NRA-RBL on May 30, 2015 21:42:38 GMT
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Post by tisme on May 31, 2015 16:52:43 GMT
How do you true them if they are out ?
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Post by dougy on May 31, 2015 18:32:22 GMT
Just another thing that's not been mentioned. Are the case necks concentric  You will see a difference between your measurements of virgin brass and once fired in your rifle.. How far off absolute perfection do you need to be really. |
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Post by c18rch on Jun 1, 2015 8:16:29 GMT
Get a decent seater and your run out wont be worth measuring. I use a Redding competition Seating Die for a 22.250 and run out is 0.0015 at the most, I have a Forster Comp die for 260 and its not as good as the redding but good enough. +1 A good press with good dies and don't worry about it. |
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Post by davet on Jun 1, 2015 12:22:16 GMT
If the Hornady uses some sort of side pressure to 'True' (IE bend) nominally off-centre rounds then I would not want to use it full-stop!
Surely the answer is to go back to your brass & tools to find out why its not concentric in the first place rather than using a 'hammer' to make it so?
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Post by sako75varminter on Jun 1, 2015 17:15:20 GMT
Just a little tip fellas...when you have seated your bullet..give the case a 180 degree turn and seat again!...works for me!
P.S..CLEAN YOUR DIES YOU LAZY SODS!  |
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Post by porkchop on Jun 1, 2015 20:18:49 GMT
Just a little tip fellas...when you have seated your bullet..give the case 180 degree turn and seat again!...works for me!
P.S..CLEAN YOUR DIES YOU LAZY SODS! I kind of do the same,but seat bullet half way turn 180 then finish seating.does it work? dont know as i have nothing to measure it with but it will hold 1/2 moa to 800 |
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Post by triggersqueezer on Jun 1, 2015 20:46:05 GMT
you would need to be a wind reading god to need to worry about it but i had a pal come round on friday with a gauge.my 7mm were sub 1 thou (neck turned) the 6mm br was just shy of 2 tho but these are not neck turned so was expected.still exeptable imo
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I use a Redding competition Seating Die for a 22.250 and run out is 0.0015 at the most, I have a Forster Comp die for 260 and its not as good as the redding but good enough. 
You will see a difference between your measurements of virgin brass and once fired in your rifle..
