Why FL resize?
- Thread starter Leo_B
- Start date
AlNyhus
Silver $$ Contributor
Having tested neck sizing only with good results....the juice just isn't worth the squeeze.
A properly dimensioned f.l. die (either a bushing or fixed neck style) that gives a repeatable amount of shoulder set back during sizing is preferable in all respects. This has been my experience in chamberings from the .17's to the .30's in everything from hunting guns to true Benchrest rigs.
There are some chamberings that neck sizing does work well due to dimensions and brass thickness (think the Hornet stuff, etc). They are the exception that proves the rule.
When you're neck sizing only and have to apply extra pressure to either open or close the bolt, what you're really doing is using the action and the chamber as a sizing die.
No amount of grease on the lugs and the lug abuttments in the receiver are going to withstand that kind of abuse for very long w/o galling.
You're also levering the back end up the bolt up against the upper bridge of the receiver and 'loading' a bunch of stress into everything.
When that happens, do you think the top lug is still in complete contact with the lug abuttment?
Or that the lower one isn't carrying an excessive amount of load that may lead to galling?
Good shootin'
-Al
A properly dimensioned f.l. die (either a bushing or fixed neck style) that gives a repeatable amount of shoulder set back during sizing is preferable in all respects. This has been my experience in chamberings from the .17's to the .30's in everything from hunting guns to true Benchrest rigs.
There are some chamberings that neck sizing does work well due to dimensions and brass thickness (think the Hornet stuff, etc). They are the exception that proves the rule.
When you're neck sizing only and have to apply extra pressure to either open or close the bolt, what you're really doing is using the action and the chamber as a sizing die.
No amount of grease on the lugs and the lug abuttments in the receiver are going to withstand that kind of abuse for very long w/o galling.
You're also levering the back end up the bolt up against the upper bridge of the receiver and 'loading' a bunch of stress into everything.
When that happens, do you think the top lug is still in complete contact with the lug abuttment?
Or that the lower one isn't carrying an excessive amount of load that may lead to galling?
Good shootin'
-Aldellet
Gold $$ Contributor
Consider that the accuracy potential difference between neck sizing and full length sizing is actually pretty minimal as far as the cartridge/rifle combination is concerned. Things go sideways when you introduce the shooter and a second shot. To have a fair comparison you would need to shoot a series of groups removing and replacing the rifle from the bags between each and every shot. Maybe even put a time limit between shots.
It’s not so much whether or not the bullet exits the barrel the same each time, it’s if the barrel is pointed the same way each time. The harder it is to work the bolt, the harder it is to get back on target, and constantly moving the rifle and or rest is a sure way to change point of impact.
It’s not so much whether or not the bullet exits the barrel the same each time, it’s if the barrel is pointed the same way each time. The harder it is to work the bolt, the harder it is to get back on target, and constantly moving the rifle and or rest is a sure way to change point of impact.
I learned long ago that it is fruitless to ask which gun on a gun forum. No matter which you choose there will always be detractors. I made that mistake asking about a 6ARC bolt rifle.
My advice after all these replies is to just go ahead and try for yourself, then you will gain experience and first hand knowledge. You may find you need both or one truly is better than the other.
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