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Rifles, Reloading, Optics, Equipment
Reloading
Federal 308 Gold Medal Match Powder?
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<blockquote data-quote="Bart B" data-source="post: 606714" data-attributes="member: 5302"><p>Federal originally used IMR4895 in their .308 match ammo. That's according to a Federal Rep. at the National Matches I was at some years ago. They also metered the powder to 3/10ths grain spread which was plenty good enough for no worse than 2/3 MOA accuracy at 600 yards in well built rifles.</p><p></p><p>The US Army and Marine Corps Rifle Teams handloaded thousands of rounds of .308 Win. ammo with 44 grains of IMR4064 under Sierra 168's. But they weighed each charge and it was more accurate than Federal factory match ammo. IMR4064 doesn't meter to uniformly for accuracy in high speed machines; either Col's. Hatcher or Townsend who proved this at an arsenal in the 1940's with the .30-06 round so they continued using IMR4895.</p><p></p><p>I wouldn't be surprised if Federal used Varget or some other extruded powder on some later lots of Fed. GM Match .308 ammo. I doubt they ever used any ball powder; nobody winning high power matches and setting records along the way would either.</p><p></p><p> It's normal that a few factory rifles of the same make and model all shoot a given load differently. Even if their chamber dimensions are identical. Here's only a few reasons why; bore/groove diameters, bolt face squareness with chamber axis, locking lug mating, bedding, firing pin spring strength, firing pin protrusion from the bolt face.....to name a few.</p></blockquote><p></p>
[QUOTE="Bart B, post: 606714, member: 5302"] Federal originally used IMR4895 in their .308 match ammo. That's according to a Federal Rep. at the National Matches I was at some years ago. They also metered the powder to 3/10ths grain spread which was plenty good enough for no worse than 2/3 MOA accuracy at 600 yards in well built rifles. The US Army and Marine Corps Rifle Teams handloaded thousands of rounds of .308 Win. ammo with 44 grains of IMR4064 under Sierra 168's. But they weighed each charge and it was more accurate than Federal factory match ammo. IMR4064 doesn't meter to uniformly for accuracy in high speed machines; either Col's. Hatcher or Townsend who proved this at an arsenal in the 1940's with the .30-06 round so they continued using IMR4895. I wouldn't be surprised if Federal used Varget or some other extruded powder on some later lots of Fed. GM Match .308 ammo. I doubt they ever used any ball powder; nobody winning high power matches and setting records along the way would either. It's normal that a few factory rifles of the same make and model all shoot a given load differently. Even if their chamber dimensions are identical. Here's only a few reasons why; bore/groove diameters, bolt face squareness with chamber axis, locking lug mating, bedding, firing pin spring strength, firing pin protrusion from the bolt face.....to name a few. [/QUOTE]
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Federal 308 Gold Medal Match Powder?
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