Pete Wass
Well-known member
I finally found the time to find the tune on a new barrels on one of my 30-44's yesterday after work. I had the same load in the new Lapua small primer cases and in some Winchesters. All had been fied in the chamber of the rifle I was using. I cronowed both group of cases and did not notice any big difference in the results.
What I did observe was the carbon marks on the Lapua's extended way down near the neck/shoulder junction while the marks were up in the top third of the necks on the Winchesters.All the cases were annealed at the same time this spring through a Ken Light machine.
I had drilled the holes in the Lapuas out to .071 as one of the first things I did in preparing them. I guess one is left with one two posabilities, either the larger primer gets the fire going faster or there is a moderate difference in the heat of the pimers. Makes one wonder if small primers are big enoug for HBR cases; does me anyway.
What I did observe was the carbon marks on the Lapua's extended way down near the neck/shoulder junction while the marks were up in the top third of the necks on the Winchesters.All the cases were annealed at the same time this spring through a Ken Light machine.
I had drilled the holes in the Lapuas out to .071 as one of the first things I did in preparing them. I guess one is left with one two posabilities, either the larger primer gets the fire going faster or there is a moderate difference in the heat of the pimers. Makes one wonder if small primers are big enoug for HBR cases; does me anyway.