Something has been bugging me about brass, virgin brass, either processed, or out of the box, versus once fired!
First of all, Butterbean , made mention of it in his thread, MY FIRST TIME, but I want to explore other people's thoughts, and experiences , with accuracy, from virgin brass, versus once fired.
I have had two rifles, in different calibers, that would , with virgin brass, shoot better groups, hands down, then it would with any combination of resizing, or lack of. Full length, partial, neck sized, didn't matter. It shot ok, but no where's near what the virgin did.
Secondly, do you shoot the whole box, or do do take out and shoot through a batch, then start over.
Thoughts and experiences appreciated!
Be safe All!
I do not want to get into a lengthy post here, but yes, I have had this happen on more than one occasion. And one cartridge sticks out more than others, 6.5x47 Lapua. Over the yrs, bringing new brass into service for each new chamber, I sometimes felt you could not mess this case up, it was that easy.
I refuse to prep new brass, even dinged case mouths, seat a bullet, it is as round as any tool you will use to straighten mouths. If you have 200 pcs of brass, and 5 dinged mouths, and only fix the 5, all you have done is changed the dynamics of those 5 cases.
So the conclusion, case expansion, energy expended, capacity all aside, IMO, it all boils down to the fact that you, no matter what you pull out of your hat, you will never duplicate that exact neck tension ever again, ever. One time deal.
One poster alluded to Lapua brass having some coating, very well may be, like I said, I do not do much prep other than a chamfer.
I just pulled a 25 saum barrel, 335 rds fired. I could not get any results after I started working with my 100 pcs of fired ADG brass. With new brass, the rifle shot a 3 shot, 3" group at 1450, waterline, I wish now I had drove down and took a pic so I had one happy memory of the rifle. Once my die touched that brass, it was all over.
Sidebar: I develop on new brass, make some minor adj once it is fired. I will continue this method, one experience will not change my mind.