I got some IMR 8208 XBR powder yesterday, and have loaded up some test loads for accuracy. While I was loading up a series of bullets I tried 2 different grain weights and one different case mfg for testing of initial pressure.
EQUIPMENT: Rock River Arms 6.8 SPC II upper 16" barrel with 1:10 twist, mid length gas system.
Adams ARms Piston system for mid length system.
Silver State Arms and Hornady brass
CCI 450 Small Rifle Magnum primers
Hornady 100 gr SP bullet (flat bottom)
LEE sizer die and LEE Factory Crimp die Fired once brass except for the Hornady (2) and full resized.
Powder : IMR 8208 XBR, the new stuff out.
First a little clue on load data from Hodgdon site:
EQUIPMENT: Rock River Arms 6.8 SPC II upper 16" barrel with 1:10 twist, mid length gas system.
Adams ARms Piston system for mid length system.
Silver State Arms and Hornady brass
CCI 450 Small Rifle Magnum primers
Hornady 100 gr SP bullet (flat bottom)
LEE sizer die and LEE Factory Crimp die Fired once brass except for the Hornady (2) and full resized.
Powder : IMR 8208 XBR, the new stuff out.
First a little clue on load data from Hodgdon site:
6.8 mm Remington SPC Cartridge Load Data | Starting Loads | Maximum Loads |