|
Never used mag primers in .30 Carbine for either H110 or WW296 loads. Extreme velocity spreads are low and accuracy is good.
Is it a USGI Carbine? I had some reloads occasionally boost pressure so high, chamber machine marks would be clearly impressed on the case walls, the primer pockets expanded to never again hold a primer, and a nice impression of the ejector cutout showed up on the case head. Very dangerous pressures! But the extractor never broke.
After that one shooting session, examination of the variables showed that the cases were in serious need of trimming. The crimp used on those lead bullets was letting the case mouth slip ahead of the chamber and into the throat by about half a millimeter. That left the bullets rather firmly crammed into the cases with no easy way out.
No further problems since trimming all those $#%&!!! cases. Oh, tedium!
Cheapo.
|