When you start playing with OALs to the lands here's some numbers to bear in mind that most service rifle shooters will understand;
A Sierra 80 (old style) will touch lands at around;
2.460 in a Wylde;
2.440 in a CLE
2.550 in a NATO
Under 2.400 in the 223 match that Krieger was using.
Using a different bullet will give you different numbers. John at White Oak changes out his reamers regularly…but if a smith doesn't, reamer wear will give you a shorter measurement than above.
A Sierra 80 (old style) will touch lands at around;
2.460 in a Wylde;
2.440 in a CLE
2.550 in a NATO
Under 2.400 in the 223 match that Krieger was using.
Using a different bullet will give you different numbers. John at White Oak changes out his reamers regularly…but if a smith doesn't, reamer wear will give you a shorter measurement than above.