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Pete Wass
06-28-2008, 11:53 AM
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.

Gene Beggs
06-28-2008, 12:21 PM
Pete, please e-mail me. genebeggs@cableone.net.

Thanks,

GeneBeggs

David Halblom
06-28-2008, 06:40 PM
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.

Pete, the other thing to keep in mind is that even if annealed at the same time, the Lapua cases are going to be harder than the WW cases. That would have been a better explanation for the "wave" difference than the primers size

IMHO