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Headspace help on my 6.5 grendel

This is a discussion on Headspace help on my 6.5 grendel within the Reloading forums, part of the Firearm Forum category; I just picked up a new 6.5 Grendel. A Howa Mini action bolt gun. I am begining to work up loads and have found that ...


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Old November 24th, 2019, 05:17 PM   #1
 
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Headspace help on my 6.5 grendel

I just picked up a new 6.5 Grendel. A Howa Mini action bolt gun. I am begining to work up loads and have found that my new gun has a generous amount of headspace. I base this on the fact that the case grew .0055 using my Hornady headspace gauge. I only want to bump the shoulder back .001-.002. I like to work the brass as little as possible.
What do you guys do to limit bumping the shoulder all the way back? I know I should get a set of competition shell holders but thought I would ask in case i am overlooking something.
Thanks
BG



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Old November 24th, 2019, 06:08 PM   #2
 
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Andy, another option is to take your headspace gauge, with calipers and zero it out on a fired piece of brass. Set your sizing for high and slowly crank it down. After each stroke recheck the headspace. Repeat until you reach the desired shoulder set back. I primarily neck size but there comes a point in time when the shoulder needs a bump and that’s my method.
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Old November 24th, 2019, 06:11 PM   #3
 
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Andy, another option is to take your headspace gauge, with calipers and zero it out on a fired piece of brass. Set your sizing for high and slowly crank it down. After each stroke recheck the headspace. Repeat until you reach the desired shoulder set back. I primarily neck size but there comes a point in time when the shoulder needs a bump and thatís my method.
Basically not letting the sizing die completely size the brass but rather just enough to get my shoulder set back to where I want?
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Old November 24th, 2019, 06:26 PM   #4
 
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Correct. It is possible to bump the shoulder and not work the entire case with a F/L die.

Your cases won’t be fully fire formed, (which is what you want) after one firing though. Can you close the bolt relatively easily on your fired cases now?
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Old November 25th, 2019, 08:37 AM   #5
 
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Quote:
Originally Posted by bluesgunner View Post
I just picked up a new 6.5 Grendel. A Howa Mini action bolt gun. I am begining to work up loads and have found that my new gun has a generous amount of headspace. I base this on the fact that the case grew .0055 using my Hornady headspace gauge. I only want to bump the shoulder back .001-.002. I like to work the brass as little as possible.
What do you guys do to limit bumping the shoulder all the way back? I know I should get a set of competition shell holders but thought I would ask in case i am overlooking something.
Thanks
BG
Back the sizing die out . When you get the die where you want it , set the lock rings . Might involve a little trial and error but nothing is complicated about this method .
Gary
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