Bought some new reloading manuals and it seems that new manuals are basing their loads in 308 Winchester with a 1:10 twist rate, rather than the 1:12 on the rifles I have.
Generally speaking, I get my best accuracy with loads a bit shy of maximum recomended, but I like to have the data match closely. For example, if the load calls for winchester cases with a particular primer/bullet/powder, pressed to a particular length, thats exactly what I will assemble, at least as a starting point. I suppose the slower twist will cause a slightly lower pressure, but is there a corrolation here?
Generally speaking, I get my best accuracy with loads a bit shy of maximum recomended, but I like to have the data match closely. For example, if the load calls for winchester cases with a particular primer/bullet/powder, pressed to a particular length, thats exactly what I will assemble, at least as a starting point. I suppose the slower twist will cause a slightly lower pressure, but is there a corrolation here?