Different bullet lengths at ogive will give you different seating depths. If you seat bullets to give you an exact distance to lands or jam into the lands, if the bullets are not the same length you will get variances. These differences can and will show up on target. I'm not sure a difference of .001 will show at 300-400 yards. The only way to find out is load em up and shoot them. When I was using the .308 Win in my 12 FTR the lengths of 168 and 175 SMK's, and 168 Hornady BTHP would vary as much as .012. Some boxes had 3 sorts. I use the 105 Hornady Amax in my Dasher and they have been extremely consistant and I check the OAL and adjust my Forster Mic seater as I load them. I have buddies who use Bergers and say they don't have to measure them. This issue has been cussed and discussed many times on many forums. I believe in a rifle used for match shooting it is good to do. As always other opinions may vary. Luckus
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