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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
1600 yard rifle and bore
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<blockquote data-quote="Pro2A" data-source="post: 2367558" data-attributes="member: 17889"><p>300WM is a venerable old work horse for hunting four- as well as two-legged critters. However, introduced with 1963 ballistics technology, several attributes inhibit its ability to excel at ELR by today's definition and performance expectations, including: </p><p>- As I recall, 300WM is trans-sonic well short of 1500yds.....around 1200yds.</p><p>- Short head dimension...incompatible with high BC, long, heavy for caliber projectiles. Its biggest disadvantage is a quite short 0.72-inch "head height," which is the distance between the front of the case mouth and the cartridge's SAAMI maximum overall length</p><p>- Sloppy throat dimension......The SAMMI throat of the 300WM is 0.315 for a .308 projectile.....throwing a bowling ball down a hallway.....versus 300PRC 0.3088......better bullet presentation to the rifling.</p><p>-300WM is belted making headspacing less precise versus 300PRC, a shoulder headspace datum line.</p><p></p><p>The 300PRC was selected by military for its ability to deliver 50% probability first round impacts at 2000m on human sized targets. But, the 300NM has preempted the 300PRC for the new SOCCOM MK22 in the Barrett MRAD Advanced Sniper Rifle contract. There are also numerous other 300 cartridges as better options than 300WM for 1500+yd applications.</p></blockquote><p></p>
[QUOTE="Pro2A, post: 2367558, member: 17889"] 300WM is a venerable old work horse for hunting four- as well as two-legged critters. However, introduced with 1963 ballistics technology, several attributes inhibit its ability to excel at ELR by today's definition and performance expectations, including: - As I recall, 300WM is trans-sonic well short of 1500yds.....around 1200yds. - Short head dimension...incompatible with high BC, long, heavy for caliber projectiles. Its biggest disadvantage is a quite short 0.72-inch "head height," which is the distance between the front of the case mouth and the cartridge's SAAMI maximum overall length - Sloppy throat dimension......The SAMMI throat of the 300WM is 0.315 for a .308 projectile.....throwing a bowling ball down a hallway.....versus 300PRC 0.3088......better bullet presentation to the rifling. -300WM is belted making headspacing less precise versus 300PRC, a shoulder headspace datum line. The 300PRC was selected by military for its ability to deliver 50% probability first round impacts at 2000m on human sized targets. But, the 300NM has preempted the 300PRC for the new SOCCOM MK22 in the Barrett MRAD Advanced Sniper Rifle contract. There are also numerous other 300 cartridges as better options than 300WM for 1500+yd applications. [/QUOTE]
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1600 yard rifle and bore
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