mike243
Well-Known Member
Hi guys,
a bit of advise required, Ive started working out my new .308 reloads, ive measured the OAL and got 2.348", im not particularly concerned about having the bullet right upto the lands but there is only aprox 100 thou of the bearing surface in the case neck at full length, i was wondering this so i know when fiddeling with OAL if the groups are a bit poor what max length I can go to, what is the minimum amount of contact needed for, 1. the bullets to be secure in the case and 2, get enough grip for sufficient pressure to give proper ignition and combustion of the powder, point 2 may not be an issue but I had it in mind that if the bullet pops out of the neck too easily it may be a problem, the rifle is a rem 700, bullets are 165 speer boat tail soft points, powder is varget, primers are fed gmm
mike
a bit of advise required, Ive started working out my new .308 reloads, ive measured the OAL and got 2.348", im not particularly concerned about having the bullet right upto the lands but there is only aprox 100 thou of the bearing surface in the case neck at full length, i was wondering this so i know when fiddeling with OAL if the groups are a bit poor what max length I can go to, what is the minimum amount of contact needed for, 1. the bullets to be secure in the case and 2, get enough grip for sufficient pressure to give proper ignition and combustion of the powder, point 2 may not be an issue but I had it in mind that if the bullet pops out of the neck too easily it may be a problem, the rifle is a rem 700, bullets are 165 speer boat tail soft points, powder is varget, primers are fed gmm
mike