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Rifles, Reloading, Optics, Equipment
Reloading
Whats the chance...
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<blockquote data-quote="Kevin Thomas" data-source="post: 475502" data-attributes="member: 15748"><p>Sorry, looks like I forgot to answer this one in my previous response, but there really is no specific answer to this one. Lake City, and most any other ammo contract, virtually never specify a load. At least, not unless they supply the powder that is to be used in that particular run. What they require is a specific set of performance parameters, velocity, pressure, accuracy, etc.. Whatever amount of powder it takes to meet these specs is the amount that will be used. In the case of Lake City, they do an initial work up with every run for the lot of powder that will be used. The ballistics staff works up the load to one-one hundreth of a grain, and that becomes the median charge weight for that run. The velocity for the M118LR was 2,580 @ 78 feet, which equates back to about 2,620,-2,630 fps, something in that ball park. That's what's needed to keep the 175 supersonic at 1,000 yards, which is what that load was designed to do. Nominally, this will take around 41.0-42.0 grains of RL-15, if memory serves correctly. Varies with each lot, so it has to be re-established each and every time, for that particular combination. Sorry, no specific answer, just the parameters for performance.</p></blockquote><p></p>
[QUOTE="Kevin Thomas, post: 475502, member: 15748"] Sorry, looks like I forgot to answer this one in my previous response, but there really is no specific answer to this one. Lake City, and most any other ammo contract, virtually never specify a load. At least, not unless they supply the powder that is to be used in that particular run. What they require is a specific set of performance parameters, velocity, pressure, accuracy, etc.. Whatever amount of powder it takes to meet these specs is the amount that will be used. In the case of Lake City, they do an initial work up with every run for the lot of powder that will be used. The ballistics staff works up the load to one-one hundreth of a grain, and that becomes the median charge weight for that run. The velocity for the M118LR was 2,580 @ 78 feet, which equates back to about 2,620,-2,630 fps, something in that ball park. That's what's needed to keep the 175 supersonic at 1,000 yards, which is what that load was designed to do. Nominally, this will take around 41.0-42.0 grains of RL-15, if memory serves correctly. Varies with each lot, so it has to be re-established each and every time, for that particular combination. Sorry, no specific answer, just the parameters for performance. [/QUOTE]
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