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Rifles, Reloading, Optics, Equipment
Reloading
300wm military brass-What's up with this?
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<blockquote data-quote="greenejc" data-source="post: 1966505" data-attributes="member: 60453"><p>The brass for the military(M248 Mod 0 with 190gr. Sierra and the M248 Mod 1 with the Sierra 220 grain bullet) is loaded way past SAAMI specs. Its loaded to push very heavy for caliber bullets(220 grains) to maximum velocities, and the Army, at least, could care less about reloading the brass. They consider it a one time use and its scrapped. The brass I got was all Federal, and about half of it was unuseable due to being badly stretched, especially above the belt. I reviewed the milspec requirements for the U.S. Army loads and their pressure requirements are as follows: MAP of 68,100psi, not to exceed 78,900psi. Velocity with 220 grain Sierra MK, 2850fps, plus or minus 50fps, using H1000, at 70 degrees from a 24" test barrel. The SAAMI MAP for this cartridge is 64,000psi. The army starts 4,000psi over maximum pressure, and allows a 10,900psi maximum over that. This information is from a DOD document detailing the cartridge requirements dated 17 March, 2009. I got a number of them to work by re-sizing them two or three times, but they were still a tight fit. At least the primer pockets weren't stretched. There was no case head separation with any of them, and if I only get two or three reloads, I got the brass for free, so I've been using it.</p></blockquote><p></p>
[QUOTE="greenejc, post: 1966505, member: 60453"] The brass for the military(M248 Mod 0 with 190gr. Sierra and the M248 Mod 1 with the Sierra 220 grain bullet) is loaded way past SAAMI specs. Its loaded to push very heavy for caliber bullets(220 grains) to maximum velocities, and the Army, at least, could care less about reloading the brass. They consider it a one time use and its scrapped. The brass I got was all Federal, and about half of it was unuseable due to being badly stretched, especially above the belt. I reviewed the milspec requirements for the U.S. Army loads and their pressure requirements are as follows: MAP of 68,100psi, not to exceed 78,900psi. Velocity with 220 grain Sierra MK, 2850fps, plus or minus 50fps, using H1000, at 70 degrees from a 24" test barrel. The SAAMI MAP for this cartridge is 64,000psi. The army starts 4,000psi over maximum pressure, and allows a 10,900psi maximum over that. This information is from a DOD document detailing the cartridge requirements dated 17 March, 2009. I got a number of them to work by re-sizing them two or three times, but they were still a tight fit. At least the primer pockets weren't stretched. There was no case head separation with any of them, and if I only get two or three reloads, I got the brass for free, so I've been using it. [/QUOTE]
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Reloading
300wm military brass-What's up with this?
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