Re: No signs of over pressure?????
Those are fair comments. Typically that cal is headspaced off the belt, but many headspace it off the shoulders.. Typically, where you begin to see head separations is just ahead of the belt. Keep an eye on that portion for any signs of thinning case walls. Also, primer condition is not always the only indicator (if any) of over-pressure signs. You have to take into consideration that cartridge has several bearing points, from case wall, to the belt, to bolt face, and if the cartridge has room to move around, that movement will ‘absorb’ a lot of the pressures.. when you have all of or most of the pressures bearing in the shoulder -bolt face combination, you may begin to see over-pressure signs and these can occur, and do occur rapidly when they do , just when you have the least attention on it. Take into consideration the batch of brass you use for load development.. not all cases are loaded the same charge, some have much higher charges, and repetative higher charges with lower charges do funny things to brass.. In a new 25-06 bbl I had started out development, I had low pressures that actually regressed the headspace from -.002 to -.009 .. I used that same batch of brass for my regular loads once I settled on a charge, and sure enough, case head separation occurred after the 5th reloads.. that is more of an extreme example, but relevant still.. have fun.