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Reloading
M1 Garand Load
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<blockquote data-quote="Bart B" data-source="post: 361317" data-attributes="member: 5302"><p>The .30-06 and its powders are an interesting trail to follow. Much of it has to do with how arsenals loaded a few dozen (trillion?) rounds for military use.</p><p></p><p>When the Garand came to power in the late 1930's, DuPont and Hercules had finally devoped some good powders and they were first used in the .30-06 for Garands. It wasn't until 1941 that DuPont's IMR series had their 4895 powder added to others developed about 10 years earlier. That was "the" ticket for best pressure, velocity and accuracy specs for the new 150-gr. FMJ flat based bullet that earlier replaced the old 172-gr. FMJBT bullet which was the standard since the late 1920's. Prior to IMR4895, Hercules' Hi Vel No. 2 was the favorite for the .30-06 in competition in spite of being very erosive on barrels. But a new M1903A3 barrel could be bought from the DCM for 2 or 3 dollars which happened every 1000 to 1500 shots. Custom barrels for Springfields and Winchesters cost more, but such was life back then.</p><p></p><p>Either Townsend or Whelen had proved that IMR4064 powder, when weighed to exact weights, shot the old 172-gr. FMJBT bullet in 30 caliber match ammo more accurate, it didn't meter uniformly enough in high-speed powder measures used on production lines. I've read that 4064 also shot the new 150-gr. bullet more accurate.</p><p></p><p>Handloaders in the late '30's who won the matches and set the records with their old M1903A3 Springfields, Winchester Model 54's and the new Model 70 National Match rifles used IMR4064. They didn't mind having to weigh charges as no measure would throw them with less than a 2/10ths grain spread. Accuracy was the name of their game for both bolt guns and later on the early 1950's, Garands. And 4064 remained the powder of choice through the early 1960's when the .308 Win. dealt the death knoll to the .30-06 for serious competition for both rifle types. The single exception was when Sierra's 200 grain FMJBT match bullet was used; it was pushed out with IMR4350 by those wanting best accuracy with the .30-06 in bolt guns. </p><p></p><p>Garands didn't use bullets heavier than 180 grains and 4064 was the favorite for best accuracy. But Frankfort and Lake City Arsenals continued using IMR4895 in their match ammo. One exception was the USN and USAF Garands rebarreled to 7.62 NATO; they used Sierra 190's atop 44 grains of IMR4320 which produced accuracy virtually as good as the best bolt action rifles could muster.</p></blockquote><p></p>
[QUOTE="Bart B, post: 361317, member: 5302"] The .30-06 and its powders are an interesting trail to follow. Much of it has to do with how arsenals loaded a few dozen (trillion?) rounds for military use. When the Garand came to power in the late 1930's, DuPont and Hercules had finally devoped some good powders and they were first used in the .30-06 for Garands. It wasn't until 1941 that DuPont's IMR series had their 4895 powder added to others developed about 10 years earlier. That was "the" ticket for best pressure, velocity and accuracy specs for the new 150-gr. FMJ flat based bullet that earlier replaced the old 172-gr. FMJBT bullet which was the standard since the late 1920's. Prior to IMR4895, Hercules' Hi Vel No. 2 was the favorite for the .30-06 in competition in spite of being very erosive on barrels. But a new M1903A3 barrel could be bought from the DCM for 2 or 3 dollars which happened every 1000 to 1500 shots. Custom barrels for Springfields and Winchesters cost more, but such was life back then. Either Townsend or Whelen had proved that IMR4064 powder, when weighed to exact weights, shot the old 172-gr. FMJBT bullet in 30 caliber match ammo more accurate, it didn't meter uniformly enough in high-speed powder measures used on production lines. I've read that 4064 also shot the new 150-gr. bullet more accurate. Handloaders in the late '30's who won the matches and set the records with their old M1903A3 Springfields, Winchester Model 54's and the new Model 70 National Match rifles used IMR4064. They didn't mind having to weigh charges as no measure would throw them with less than a 2/10ths grain spread. Accuracy was the name of their game for both bolt guns and later on the early 1950's, Garands. And 4064 remained the powder of choice through the early 1960's when the .308 Win. dealt the death knoll to the .30-06 for serious competition for both rifle types. The single exception was when Sierra's 200 grain FMJBT match bullet was used; it was pushed out with IMR4350 by those wanting best accuracy with the .30-06 in bolt guns. Garands didn't use bullets heavier than 180 grains and 4064 was the favorite for best accuracy. But Frankfort and Lake City Arsenals continued using IMR4895 in their match ammo. One exception was the USN and USAF Garands rebarreled to 7.62 NATO; they used Sierra 190's atop 44 grains of IMR4320 which produced accuracy virtually as good as the best bolt action rifles could muster. [/QUOTE]
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