Lapua40X
California Hunter Education Instructor
OCW theory says that running a specifically graduated series of samples will identify the best (optimal) load.
Here's a sample of my results.
Base data:
Winchester .284, Winchester brass turned to .001 neck tension with .003 chamber neck clearance, CCI 200 large rifle primer, Berger 180 grain bullet, Ogive referenced OAL 2.525 Alliant RL17 powder.
Target #1: 43.2 grains MV 2427
Target #2: 43.6 grains MV 2470
Target #3: 44.0 grains MV 2504
Target #4: 44.5 grains MV 2573
Target #5 44.9 grains MV 2597
The images tell the story .................
Here's a sample of my results.
Base data:
Winchester .284, Winchester brass turned to .001 neck tension with .003 chamber neck clearance, CCI 200 large rifle primer, Berger 180 grain bullet, Ogive referenced OAL 2.525 Alliant RL17 powder.
Target #1: 43.2 grains MV 2427
Target #2: 43.6 grains MV 2470
Target #3: 44.0 grains MV 2504
Target #4: 44.5 grains MV 2573
Target #5 44.9 grains MV 2597
The images tell the story .................
