neck sizing?
- Thread starter dar1246
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Re: neck sizing?
I stopped neck sizing a long time ago and went to full length for ease of bolt cycling and reliablity. But when I DID neck size I used the grip on the bullet to regulate how much of the neck I actually sized. If what you are doing, or want to do, holds the bullet stabil while you are pushing on it with your bare thumb as hard as you can, you should be good to go.
I stopped neck sizing a long time ago and went to full length for ease of bolt cycling and reliablity. But when I DID neck size I used the grip on the bullet to regulate how much of the neck I actually sized. If what you are doing, or want to do, holds the bullet stabil while you are pushing on it with your bare thumb as hard as you can, you should be good to go.
Re: neck sizing?
I size the whole neck and bump the shoulder 2 thousandths. Was wondering if any benefits to just neck sizing half the neck. The is only for a single feed bolt gun.
I size the whole neck and bump the shoulder 2 thousandths. Was wondering if any benefits to just neck sizing half the neck. The is only for a single feed bolt gun.
Re: neck sizing?
I used to size about .005 of the neck, then went to all of the neck. Now I am on FL for the reasons described above.
But if I am in a hurry and I know the headspace is not to far out I will just neck size the whole neck. I'm sure that didn't help you at all but there it is. I confuse myself sometimes...
I used to size about .005 of the neck, then went to all of the neck. Now I am on FL for the reasons described above.
But if I am in a hurry and I know the headspace is not to far out I will just neck size the whole neck. I'm sure that didn't help you at all but there it is. I confuse myself sometimes...
Re: neck sizing?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dar</div><div class="ubbcode-body">I size the whole neck and bump the shoulder 2 thousandths. Was wondering if any benefits to just neck sizing half the neck. The is only for a single feed bolt gun. </div></div>
Neck sized brass is fire formed to your chamber. If you partially size the neck, the unsized portion helps center the projectile to the bore. Make sure and use a good lube when neck sizing and check your run out. I neck size using three passes giving the brass 1/4 turns each pass. I do the same when seating the bullet.
Good luck
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dar</div><div class="ubbcode-body">I size the whole neck and bump the shoulder 2 thousandths. Was wondering if any benefits to just neck sizing half the neck. The is only for a single feed bolt gun. </div></div>
Neck sized brass is fire formed to your chamber. If you partially size the neck, the unsized portion helps center the projectile to the bore. Make sure and use a good lube when neck sizing and check your run out. I neck size using three passes giving the brass 1/4 turns each pass. I do the same when seating the bullet.
Good luck
Re: neck sizing?
I've read that you should neck size most of the neck but leave a little unsized. The reason is the unsized portion will center the bullet in the chamber when it is loaded in the rifle.
Can't say I've seen a difference in accuracy by doing this, but it seems to make sense.
I've read that you should neck size most of the neck but leave a little unsized. The reason is the unsized portion will center the bullet in the chamber when it is loaded in the rifle.
Can't say I've seen a difference in accuracy by doing this, but it seems to make sense.
Re: neck sizing?
I used to neck size everything(but my gas ammo) and always had good results, I have since started FL sizing every couple of loads. I never really had any cycling issues unless they were neck sized like 8 times or more. with my DBM guns I do find it is alot easier to load FL ammo.
I used to neck size everything(but my gas ammo) and always had good results, I have since started FL sizing every couple of loads. I never really had any cycling issues unless they were neck sized like 8 times or more. with my DBM guns I do find it is alot easier to load FL ammo.
Re: neck sizing?
I neck size to the shoulder and neck turn lightly to clean up/lessen the effects of run out.
I neck size to the shoulder and neck turn lightly to clean up/lessen the effects of run out.
Re: neck sizing?
I use a neck sizing die set up per manufacturer directions. No problems encountered and easier on the brass. I use the FL sizer after about the 5th time fired but just bump the shoulder back far enough to get the brass in without resistance.
I use a neck sizing die set up per manufacturer directions. No problems encountered and easier on the brass. I use the FL sizer after about the 5th time fired but just bump the shoulder back far enough to get the brass in without resistance.
Re: neck sizing?
FL sizing is better in a group size metric
NO sizing is better in a brass life metric
The difference is small enough that it takes a very accurate weapon and a very good shooter for this trivial detail to show up on the bottom line.
For instance: my (meticulously) reloaded ammo, in my gun, generally shoots one 5-shot group of 0.35", two groups of 0.4"-0.5 and one group of 0.6" in a box of 20. The gun is factory stock Remmy M40 VNC.
Now if I were to use FL sizing I might be able to shrink these groups by 0.05 on average (maybe).
This kind of accuracy gain IS DEFINATELY worth while in competition where this kind of difference separates the winners from the walkers. But for those of us who are satisfied with these kind of groups (above) and are just out for jollies at the range, the extra brass life (a little over 2X) is worth it.
FL sizing is better in a group size metric
NO sizing is better in a brass life metric
The difference is small enough that it takes a very accurate weapon and a very good shooter for this trivial detail to show up on the bottom line.
For instance: my (meticulously) reloaded ammo, in my gun, generally shoots one 5-shot group of 0.35", two groups of 0.4"-0.5 and one group of 0.6" in a box of 20. The gun is factory stock Remmy M40 VNC.
Now if I were to use FL sizing I might be able to shrink these groups by 0.05 on average (maybe).
This kind of accuracy gain IS DEFINATELY worth while in competition where this kind of difference separates the winners from the walkers. But for those of us who are satisfied with these kind of groups (above) and are just out for jollies at the range, the extra brass life (a little over 2X) is worth it.
Re: neck sizing?
I thought by only neck sizing half the neck. It would line up better and save on brass life.
I thought by only neck sizing half the neck. It would line up better and save on brass life.
Re: neck sizing?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dar</div><div class="ubbcode-body">I thought by only neck sizing half the neck. It would line up better and save on brass life. </div></div>
At best, maybe. Necks generally crack from the top, and you are still working the top of the neck each reload cycle.
Partial sizing of the neck is for those cases when you want a neck tension between that of one bushing and the next bushing in series.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dar</div><div class="ubbcode-body">I thought by only neck sizing half the neck. It would line up better and save on brass life. </div></div>
At best, maybe. Necks generally crack from the top, and you are still working the top of the neck each reload cycle.
Partial sizing of the neck is for those cases when you want a neck tension between that of one bushing and the next bushing in series.
