I want to clone as accurately as possible Federal Gold Medal Match .308 ammo with the Sierra 175 smk. I know this subject has been beat to death, but I am having accuracy issues and I dont understand why. I cant seem to find an answer from searching the forums.
Firearm: Rem 700 SPS Tactical, 1/10 twist, 20 inch heavy barrel. Suppressed.
Components: Fired FC brass (I dont separate by number of firings), IMR 4064, FED 210M primers, 175 SMK, 175 Nosler CC, 168 SMK, 168 AMAX, and 168 Nosler BT.
Background: My gun consistently shoots .5 MOA with Factory 175 and 168 FGMM. I have successfully Cloned the 168 grain .308 FGMM with the above components the only difference being a slightly different POI from the SMK to the AMAX, and Nosler BT, but the SMK reloads match factory POI. Muzzle velocity and accuracy match. I have Factory FGMM that I am using to match COL. If memory serves it is 2.805. When resizing I am getting a shoulder measurement of 3.620 or so while factory is around 3.617.
I have been trying to Clone the 175 FGMM but am running into Accuracy issues with both the 175 SMK and 175 Nosler CC. 41.8 gr of IM4064 seems to match the muzzle velocity but Accuracy is more along the lines of 2-3 MOA.
I have been lead to believe that this may be a powder issue for my gun. I plan on trying RL15 the next time I can find some but that may be a while considering the current state of affairs.
Is there anything else I might need to look at?
Firearm: Rem 700 SPS Tactical, 1/10 twist, 20 inch heavy barrel. Suppressed.
Components: Fired FC brass (I dont separate by number of firings), IMR 4064, FED 210M primers, 175 SMK, 175 Nosler CC, 168 SMK, 168 AMAX, and 168 Nosler BT.
Background: My gun consistently shoots .5 MOA with Factory 175 and 168 FGMM. I have successfully Cloned the 168 grain .308 FGMM with the above components the only difference being a slightly different POI from the SMK to the AMAX, and Nosler BT, but the SMK reloads match factory POI. Muzzle velocity and accuracy match. I have Factory FGMM that I am using to match COL. If memory serves it is 2.805. When resizing I am getting a shoulder measurement of 3.620 or so while factory is around 3.617.
I have been trying to Clone the 175 FGMM but am running into Accuracy issues with both the 175 SMK and 175 Nosler CC. 41.8 gr of IM4064 seems to match the muzzle velocity but Accuracy is more along the lines of 2-3 MOA.
I have been lead to believe that this may be a powder issue for my gun. I plan on trying RL15 the next time I can find some but that may be a while considering the current state of affairs.
Is there anything else I might need to look at?