Neck sizing= harder to chamber??
- Thread starter Rotaxpower
- Start date
Are you neck sizing brass that was previously fired in your rifle ??
If it was then the body & shoulders of the case should match your chamber & go in easily.
If you are neck sizing brass fired in another gun, the chamber specs will be different & those you should full length resize before using them in your gun.
After that, neck sizing should be all that is required.
If it was then the body & shoulders of the case should match your chamber & go in easily.
If you are neck sizing brass fired in another gun, the chamber specs will be different & those you should full length resize before using them in your gun.
After that, neck sizing should be all that is required.
I had a similar problem last week with some 22-250 brass. First time it was resized and couldnt figure out why only 1 out of 3 or 4 would chamber in my rifle (minus the bullet even).
As it turns out my full length dies werent adjusted low enough. Made the adjustment and re-run all approx 150 pieces back through the die again.
Everything works good now.
As it turns out my full length dies werent adjusted low enough. Made the adjustment and re-run all approx 150 pieces back through the die again.
Everything works good now.
Are you using a neck die, or partially sizing with a full length die? Partially sizing can actually move the shoulder forward, since the brass from the body has to go somewhere. If this is the case what you want to do is minimal sizing, setting the die so it just kisses the shoulder.
I have a Hornady Neck sizing die. All the brass was fired in my Remington 700P. When I full lenght size them they chamber super smooth, but with the neck sized ones, the bolt needs a noticable push forward, and down on the bolt. I do not grease the bolt lugs. I will try and chamber a few rounds before I seat the bullet and see what happens.
A little dab of grease on the rear of the locking lug and where your bolt handle attaches to the bolt body (primary extraction) goes a long way. Neck sized rounds are a little harder to chamber.
Mad Mikee, buy yourself a Redding body die. You can run your loaded rounds through them
Mad Mikee, buy yourself a Redding body die. You can run your loaded rounds through them
Glock4ever
CGN Ultra frequent flyer
- Location
- Edmonton, AB
How many times have you reloaded this brass? Two things come to mind:
1.) You may need to FL and bump the shoulders back a bit.
2.) Trimming the brass may be required.
Neither is a show stopper but with trimming you may see higher pressures.
1.) You may need to FL and bump the shoulders back a bit.
2.) Trimming the brass may be required.
Neither is a show stopper but with trimming you may see higher pressures.
Years ago I started quite a few reloaders out, using the Lee, table top, pound them out, set. The Lee is a neck sizer, only.
Even though standard loads were used and the cases always shot in the same rifle, after about four or five loadings, the cases wouldn't go back into the chamber. The shoulder then had to be pushed back with a full length re-sizer, to fit the rifle.
When neck sizing, only, with a full length resizer, the die should be set to just "kiss" the shoulder.
Even though standard loads were used and the cases always shot in the same rifle, after about four or five loadings, the cases wouldn't go back into the chamber. The shoulder then had to be pushed back with a full length re-sizer, to fit the rifle.
When neck sizing, only, with a full length resizer, the die should be set to just "kiss" the shoulder.
Glock4ever
CGN Ultra frequent flyer
- Location
- Edmonton, AB
Bruno, you won't see higher pressures with trimming - you will see higher pressures if you don't trim. As the OP mentioned these rounds are loaded - it is the expected outcome I was referring to.
sillymike
CGN Ultra frequent flyer
why would you see higher pressures with trimming???
If your brass is too long, it will not be able to expand properly to release the bullet... at which point the pressure will go up.
Okay here is
my take on neck sizing from what I know from a Benchresting perspective.
Rotax the heck with it. If you give me your phone number I can call you or you can call me this evening. Staying home with a bottle of whiskey.
Calvin
1-204-729-9333
my take on neck sizing from what I know from a Benchresting perspective.
Rotax the heck with it. If you give me your phone number I can call you or you can call me this evening. Staying home with a bottle of whiskey.
Calvin
1-204-729-9333
He means the problem may be caused because the brass is too long (needs trimming).
Every second or third time you clean you should put a dab of grease on the rear of the bolt locking lugs. If you don't they can gall and destoy the bolt. At a minimum, wipe the blt face with oil when you oil the bolt.
On the side of the bolt you will see a steep cam noth that cocks the bolt, A dab of grease on thet is alsoa good idea.
Every second or third time you clean you should put a dab of grease on the rear of the bolt locking lugs. If you don't they can gall and destoy the bolt. At a minimum, wipe the blt face with oil when you oil the bolt.
On the side of the bolt you will see a steep cam noth that cocks the bolt, A dab of grease on thet is alsoa good idea.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
To the orig post, I gather that FL sizing no problem. Same brass, same load but neck sizing - down to the neck shoulder junction - stiff chambering.
What that is telling me is there is give in your bolt during firing. Pretty common with factory solid front locking bolts. One of the lugs is not making adequate contact with the action so is pushed back under pressure of firing.
This lets the case stretch. When you put that case back into the chamber, it is stiff to chamber.
Easy test. After firing, eject the case. Then rechamber. It will likely exhibit the same stiff chambering you feel when you neck size.
Simplest solution is to keep FL sizing or using a Body die and bumping the shoulders a bit.
Long term solution when you change the barrels is have the lugs properly seated into the action so both make solid contact. When the new barrel is properly installed, neck sizing will not be a problem with sane pressure loads.
Jerry
What that is telling me is there is give in your bolt during firing. Pretty common with factory solid front locking bolts. One of the lugs is not making adequate contact with the action so is pushed back under pressure of firing.
This lets the case stretch. When you put that case back into the chamber, it is stiff to chamber.
Easy test. After firing, eject the case. Then rechamber. It will likely exhibit the same stiff chambering you feel when you neck size.
Simplest solution is to keep FL sizing or using a Body die and bumping the shoulders a bit.
Long term solution when you change the barrels is have the lugs properly seated into the action so both make solid contact. When the new barrel is properly installed, neck sizing will not be a problem with sane pressure loads.
Jerry
Last edited:
Exactly! What I prefer to do is smoke the shoulder of a case that has been fired in the rifle that I am loading for, then adjust the die down until in just barely touches the shoulder of the case. When I do this the bolt closes with just slightly more resistance than with one that has been full length re-sized.
I've also been told that partial neck sizing can result in necks that are not concentric to the axis of the case which adversely effects accuracy.
