I've been pondering this for some time.
Which barrel throat will last longer between these two cartridges shooting the same bullet, a 140 VLD,
at the same speed, 2,850 mv.
Barrel lengths being equal.
A 260 Rem shooting a stout MAX load of 46 grains of slower burning powder for 65,000 psi.
OR
A 6.5-284 shooting a slightly reduced load of 56 grains of slower burning powder for 50,000 psi.
15,000 psi difference between the two but 10 grains more powder.
Will the lower psi reduce throat wear or will the extra 10 grains of powder cause more throat wear?
