Squaregrouper
Kragaphile
I finally got around to shooting some 6.5 Creedmoor loads with my Peterson nickel plated brass. Their brass is known to be thicker with less case volume, so I loaded accordingly. My developed load with Hornady brass is 42.8gr RL16, 140gr ELD-M, Win lg rifle primers, 2.870 oal (.020 off the lands) and no crimp. This gives me .5MOA and 2800fps
Anywho... Using Peterson brass and 41.7gr, I was getting flattened primers, slap marks on the cases and >3000fps (2 shots fired). The velocities with 41.1gr, 41.3 and 41.5gr were ~2760-2780fps.
I have no idea how or why my velocity jumped by 200fps by increasing the powder by .2gr more. Compressed powder?
Thoughts???
PS- The remaining loads @ 41.7, 41.9 and 42.1 are all being pulled.
Anywho... Using Peterson brass and 41.7gr, I was getting flattened primers, slap marks on the cases and >3000fps (2 shots fired). The velocities with 41.1gr, 41.3 and 41.5gr were ~2760-2780fps.
I have no idea how or why my velocity jumped by 200fps by increasing the powder by .2gr more. Compressed powder?
Thoughts???
PS- The remaining loads @ 41.7, 41.9 and 42.1 are all being pulled.