Thread: A then c and b??

Originally Posted by MassiveAttack

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A full length die with an expander ball can cause inaccuracy because it expands the neck on the way out and it only takes a wobbly stem or inconsistant friction on each side of the neck and then neck is no longer concentric. The redding or lee neck die avoids all this.

For bonus points but the redding competition shell holder set so that when you body size your brass you are only sizing them as much as needed. This also leads to better accuracy as it's a tight fit in the chamber so less likely to be misaligned with the bore.

For hunting ammo I got though and neck size all my brass. Then I chamber it all and body size any that are tight to chamber. Typically this is only about once in every 10 reloads. If more than a few need body sizing I body size the lot.

For range ammo I don't worry unless they were really hard to chamber when I shoot them.

I agree although my preference is for the Redding bushing neck die. The Redding neck and F/L bushing dies don't use an expander ball for the neck. There is one included (don't know why as it defeats the purpose of using interchangeable bushings) but it's easily unscrewed off the decapping rod.

In recent times there has been some debate among precision shooters as to the accuracy benefit of neck vs F/L sizing. I suppose it depends on the particular chamber of the particular rifle. As an example, some of the world's best benchrest shooters F/L resize. I get the same run out using both. Any theoretical advantage as to chamber/bore alignment is just that, I've found. May well be different and no doubt is in some other shooter's rifles.

Certainly, for deer hunting at the range where probably 90% or more deer are taken, there is no advantage to neck sizing and only advantages to F/L or body sizing. I learnt a long time ago to keep it simple. You don't want any ammo chambering issues when there's a nice stag staring at you.