ORIGINAL: 48thguns
Well for starters, you need to get an OAL gauge....1/32 of an inch is a huge space between the bullet and the lands, 50 thousanths is alot. No wonder you are experiencing erosion.....too bad cause it's too late now....the damage has been done. Good luck and regards, Rick.
Sorry, but 1/32" is not a "huge" space between bullet and lands. 1/32"equates to about 30 thousandths, which is not a bad place to start (or stay at) at all.That's about where I normally start. As far as I know, throat erosion has virtually nothing whatsoeverto do with bullet seating depth.You shoot enough rounds through a rifle and the throat's going to erode, period.The bigger the case in relation to bore size, thefaster it will erode. Therefore, a .300 RUM will be shot out way before a .308 Win. will be, assuming neither is abused otherwise.