Home Forums Hunting & Shooting Hunting Rifles Just tested neck-sized 30-06 hunting rounds

Eventually the case headspace will grow and the ammo won't fit in the chamber. You will surely want to change headspace one iota in this case.

I have neck sized (only) since the mid '70's. Never had a problem. They are more accurate than the full-length sizing.

I understand when I really need to FL vs PFL. I always run my fired cased thru my headspace gauge (my rifle's chamber) to determine whether I want/need to bump the shoulder.

You get to a point when FL sizing where you squeeze down on the body of the case enuff to push shoulder forward, necessitating the shoulder bump. I cannot understand why folks want to intentionally do this when it's not necessary - hence the 1/2 to 1 turn backoff on the FL die.

My experience mirrors others on this thread. If I neck size brass...it stays with that rifle for the duration (of course). There is no such thing as full length resizing neck sized brass in rifle "A", and getting it to work satisfactory in rifle "B", nine times out of ten. I have a good number of pristine neck sized 270 brass from a pre-64 that is pretty much useless to me now that I've traded that rifle off. I have another pre-64 270 now and, as expected, fl resizing the other brass was an exercise in futility.

Might try a collet die and see if that solves the dilemma.

Only one of my rifles chambers snug after using the Lee collet die....it is my 280AI

So the fit of the case to the chamber will be the same rather than evolving firing to firing. The change in fit from "easy chambering" to "snug so bump next time" can cause POI shifts.

Another point about partial resizing by just backing the die off 1/2 to 1 turn from the shellholder is a lack of consistency.

Cases that go into the die a bit more forcefully, due to case variation or lube variation, will leave a larger gap between the die and the shellholder. Cases that resize easier will go further into the die by a few thousandths, showing a smaller gap between the die and the shellholder. With close observation, or with feeler gauges. you can see and confirm this difference.

If your case shoulders are very close to the end of the chamber, a good thing, this will explain why one cartridge chambers easily, while the next cartridge takes a little bit of force to chamber.

This slight inconsistency won't make a significant difference on big-game hunting ammo, but it can be entirely eliminated by using the Redding Competition Shell Holder kit.

http://redding-reloading.com/index.php?option=com_content&view=article&Itemid=15&id=35%3Acompetition-shellholder-sets,

http://www.midwayusa.com/product/52...-308-winchester-30-06-springfield-45-acp

This is just one more rung on the rifle loony ladder, (LOL).

Thanks for the follow up. You let the case headspace grow on its own before bumping back.

+1

Thanks mathman