Shootin4fun
Well-Known Member
Another significant es event occured when we turned necks and went to neck sizing only with bushings.......neck tension is significant. We uniform our brass in all manner with out exception.
We also learned that indeed, H powders do produce the best results from the hot/cold test, so we tend to lean towards developing H powders now. When you do test different powders, try and compare similar burn rates and be sure to test and compare at the same velocity.
Thanks for the added info buck!
The turning of necks another thing I've been considering adding to my regimen lately, but wasn't sure how much this helped in rifles that don't have a tight fit in the neck area. It seems like a lot of work along with measuring the runout and all. Just getting into the accurateshooter.com article on it now. I'm not planning on winning 1K matches with a benchrest rifle, just tuning loads for sporter rifles to the best possible accuracy.
I have started doing neck sizing only recently and find it's worth it if only to avoid having to lube and clean the whole case. What a time and mess saver. Before that I was not even bumping the shoulder in FL resizing.
BUT, did I make a mistake by buying a STANDARD RCBS neck sizing die, and not a die that uses bushings?? Will using a bushing neck sizer make a significant difference? It's easy to imagine that neck tension can make a measurable difference.
Soon we will get into annealing...it never ends.