Hi,
I am running into some strange problems while I started switching from IMR 4064 to Varget with my 308 handloads.
I have been using the same bunch of brass and bullets. With 4064, I have been doing 43gr smoothly. No sticky bolt while chambering/unchambering live/fired rounds.
However, with Varget, I started having issues lifting the bolt (not extracting brass) after the rounds are fired with merely 43gr of powder. It is supposed to be the classic sign of over pressure, but the primers look good to me (see image), and it is only 43gr. More interestingly, when I go up to 44.5gr of Varget, the stiffness of bolt lifting did not change. 2 other interesting observations:
1. The live rounds with Varget are smooth to chamber or unchamber
2. It's very hard to close the bolt when I put the fired brass with Varget in the chamber
Has anyone seen this issue before?
I am running into some strange problems while I started switching from IMR 4064 to Varget with my 308 handloads.
I have been using the same bunch of brass and bullets. With 4064, I have been doing 43gr smoothly. No sticky bolt while chambering/unchambering live/fired rounds.
However, with Varget, I started having issues lifting the bolt (not extracting brass) after the rounds are fired with merely 43gr of powder. It is supposed to be the classic sign of over pressure, but the primers look good to me (see image), and it is only 43gr. More interestingly, when I go up to 44.5gr of Varget, the stiffness of bolt lifting did not change. 2 other interesting observations:
1. The live rounds with Varget are smooth to chamber or unchamber
2. It's very hard to close the bolt when I put the fired brass with Varget in the chamber
Has anyone seen this issue before?