About neck turning...??? When do we know we have do proceed neck turning..

Mobeasto

Mobeasto

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I've read a lot in the last days but didn't find the right article on neck turning and was thinking about begining it ... but If I take my realoding books they say that the neck of a 30-06 should be .340'' but all of mine are less then that..about .330'' if I substract .308 for the inside diameter and divide it by 2 it gives me .011 of neck thickness.. That's my point I shouldn't have to turn the neck before I go to .340'' (or 0.016'' of neck thickness).. Am I on the right track or what.. So in the articles That I found they seem to say that neck turning is really important for accuracy..But If I don't have to turn the neck according to the specs.. I can't have any accuracy improvment.. So on that should I get a concentricity tool before a neck turning tool .. just to be sure that the neck Is perfect round If I don't need to turn it..

All thanks in advance
 
Unless you have a custom barrel with a chamber that was cut for a tight neck, neck turning will likely not benefit you.

It will benefit you if you have a specific lot of brass that has a poor neck thickness. (thicker on one side than the other) It will make more concentric ammunition.

Most factory chambers won't see any improvment.
 
brnolvr said:
Unless you have a custom barrel with a chamber that was cut for a tight neck, neck turning will likely not benefit you.

It will benefit you if you have a specific lot of brass that has a poor neck thickness. (thicker on one side than the other) It will make more concentric ammunition.

Most factory chambers won't see any improvment.
Click to expand...

X2!! Eagleye.
 
More important is to make sure that the "concentricity" of the neck is where it should be and for hunting ammo even that's not really necessary, within a couple thou. When it comes to fine-tuning your ammo some of the best I ever heard of don't trim much off the necks - maybe enough to clean them up, but after running the cases thru a resizing mandrel, most of the lumps and bumps are pushed to the outside of the neck, and a quick turn removes that. Depends on a zillion things, but the need for trimming necks is realistically in the hands of the hi-power guys and the BR group. Get yourself an RCBS or whatever version case tool and check the integrity of the inside of the case then use what it tells you to set your dies for your gun. Modern dies are perfectly capable of centering bullets really well as well as allowing you the options to control how you resize - if it's once-fireds in your gun and FOR your gun, you have the best brass money can buy. Don't be worrying so much about neck wall thickness - if it's your brass out of your gun, you got it made....
 
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