.308 Win - 175gr Sierra Match King with IMR 4064 (part 1)
This video details a .308 Win AR-10 build featuring a 20-inch JP Super Match barrel and tests 175gr Sierra Match King reloads using IMR 4064. The host compares handloads against Federal Gold Medal Match factory ammunition, both suppressed and unsuppressed. Results show factory ammo performed exceptionally well suppressed, while handloads tightened groups with increasing powder charges, peaking at 42.0 grains.









