How much neck tension are you guys using? i am getting flyers and was wondering if i am not using enough neck tension, i am currently using 1 thou.
what say you guys?
what say you guys?
- Thread starter 7.62willdo
- Start date
Re: AR-10 owners
a crimp without a cannelure? just a bit to help bite the bullet so to speak? im just starting to consider reloading for my gasser. do standard seating dies have a crimp or do you have to get a specificly labeled "crimp"? i havent tried to see if i can crimp with what i have and since i use SMKs i never looked into crimping at all
a crimp without a cannelure? just a bit to help bite the bullet so to speak? im just starting to consider reloading for my gasser. do standard seating dies have a crimp or do you have to get a specificly labeled "crimp"? i havent tried to see if i can crimp with what i have and since i use SMKs i never looked into crimping at all
Re: AR-10 owners
I'm using standard RCBS FL dies and not having issues at 2.8 COAL. I got a few flyers at 2.82 COAL though. Are you sure the fliers are the rifle/ammo and not you?
I'm using standard RCBS FL dies and not having issues at 2.8 COAL. I got a few flyers at 2.82 COAL though. Are you sure the fliers are the rifle/ammo and not you?
Re: AR-10 owners
I use .002.
I loaded ten rounds through the mag and then I extrated all ten and remusered off the ogive.
I noticed no change in seating depth.
I use .002.
I loaded ten rounds through the mag and then I extrated all ten and remusered off the ogive.
I noticed no change in seating depth.
Re: AR-10 owners
You'll want 0.003 for gas guns. Another thing that some people overlook is the importance of annealing by which you can achieve more uniform neck tension. Here is a good article for your consideration:
http://www.6mmbr.com/annealing.html
Also, don't be too sure that your "flyers" are case neck tension related unless you are getting bullets shoved back into your cases either while in the mag during recoil or upon chambering from the mag. Its an easy and quick thing to check if you load up a mag, shoot a few rounds to allow the rifle to bang around a little. Drop the mag, carefully eject the unfired, chambered round, and check both the rounds in the mag and the chambered round to see if you are having problems. You may be able to visually see a problem, but keep your calipers handy to make sure you aren't getting less noticeable changes.
You'll want 0.003 for gas guns. Another thing that some people overlook is the importance of annealing by which you can achieve more uniform neck tension. Here is a good article for your consideration:
http://www.6mmbr.com/annealing.html
Also, don't be too sure that your "flyers" are case neck tension related unless you are getting bullets shoved back into your cases either while in the mag during recoil or upon chambering from the mag. Its an easy and quick thing to check if you load up a mag, shoot a few rounds to allow the rifle to bang around a little. Drop the mag, carefully eject the unfired, chambered round, and check both the rounds in the mag and the chambered round to see if you are having problems. You may be able to visually see a problem, but keep your calipers handy to make sure you aren't getting less noticeable changes.
Re: AR-10 owners
What I do too<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kirk</div><div class="ubbcode-body">I run .002-.003 followed by a Lee factory crimp die in all the AR10s.
Kirk R </div></div>
What I do too<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kirk</div><div class="ubbcode-body">I run .002-.003 followed by a Lee factory crimp die in all the AR10s.
Kirk R </div></div>
Re: AR-10 owners
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kirk</div><div class="ubbcode-body">I run .002-.003 followed by a Lee factory crimp die in all the AR10s.
Kirk R </div></div>
So, how are your groups?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kirk</div><div class="ubbcode-body">I run .002-.003 followed by a Lee factory crimp die in all the AR10s.
Kirk R </div></div>
So, how are your groups?
Re: AR-10 owners
I primarily shoot steel, never did many groups with the exception of load development. The 3 AR10s I have owned were GAPs with 24" Rock barrels; 175 SMKs seated @ 2.800, Win brass (.002 tension with Lee crimp), CCI mag primers and 45gr of RL15. All rifles where between 1/2-3/4 MOA with this load.
Kirk R
I primarily shoot steel, never did many groups with the exception of load development. The 3 AR10s I have owned were GAPs with 24" Rock barrels; 175 SMKs seated @ 2.800, Win brass (.002 tension with Lee crimp), CCI mag primers and 45gr of RL15. All rifles where between 1/2-3/4 MOA with this load.
Kirk R
Re: AR-10 owners
AR10T, 2200 rnds, .002 NT, crimp die collecting dust. Checked for set back multible times and still do it from time to time just to be sure. May find a problem in the future but up until now, none. You'd think I'd call it good and quit worrying huh?
okie
Oh, I forgot:
178 Amax, 44.6 Varget, FGMM brass, 210m or BR2's, 2.810 COAL
AR10T, 2200 rnds, .002 NT, crimp die collecting dust. Checked for set back multible times and still do it from time to time just to be sure. May find a problem in the future but up until now, none. You'd think I'd call it good and quit worrying huh?
okie
Oh, I forgot:
178 Amax, 44.6 Varget, FGMM brass, 210m or BR2's, 2.810 COAL
Re: AR-10 owners
A good test is to measure 5 rounds or so, put them in a magazine and cycle them through and then measure them again. My opinion is that if you want to be sure the bullet is not going to move, you need to crimp it. I use .003, any less and it won't hold tight enough, any more and it won't help.
myerfire
A good test is to measure 5 rounds or so, put them in a magazine and cycle them through and then measure them again. My opinion is that if you want to be sure the bullet is not going to move, you need to crimp it. I use .003, any less and it won't hold tight enough, any more and it won't help.
myerfire
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