Can any one tell me which brand of brass has the greatest neck wall thickness in 35Whelan or 9.3x62. I want to reform some down to 7x57 and end up with a neck wall thickness of .0185 so I can turn and have a release clearance of 1 1/2 thou for target work. I tried 30/06 and while there is enough brass gain from the rear of the shoulder, there is still a few mm of the 30 cal neck left at the mouth of the case which dosent gain enough in reforming.

Von Gruff.

Thickness generally goes with weight.
I think you might find US GI brass the heaviest and most likely to have thicker necks.
Hoever I don;t think you will ever find necks thick enough for .0185" thickness.
While I don't have any cases to back this up I have read of RWS cases being massively thick in some calibers.

Why roger

quote:

Originally posted by bartsche:
Why roger

I have to ask this question too.
Unless your rifle is of benchrest quality with a very tight necked chamber turnng is a waste of time.

Why do I want to? Why dose there have to be a reason other than I want to. Seriously though I have a nice min spec chamber because I wanted to see if the 7x57 could be made to perform a little better than respectable. I had 300 Graff cases and got 150 good ones with neck wall thickness that after turning gave me .017. Expanded the necks with 30 cal button polished down to .289 then used a 315 button in a wilson neck sizing die.This gave a touch fit at the end of the .315 - .323 junction in the 3 thou tapered neck area of the 7x57 chamber to centralise for fireforming.This gave me a 3.5 thou release clearance at the mouth of the case and while this is great for hunting I wanted to try for a 1.5 thou release with a batch of brass to see if I could compete with the modern designs. Just something I always wanted to do was to see if the older cartridges had more to them than just being superb hunting cartrisges.

von Gruff.

quote:

Just something I always wanted to do was to see if the older cartridges had more to them than just being superb hunting cartridges.

Success with your quest! Please keep us posted on your findings - very interesting!

PS. I didn't realize there was anything 'un-modern' about the 7x57.