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Long Range Hunting & Shooting
working load, proper shooting technique help!
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<blockquote data-quote="7magcreedmoor" data-source="post: 995221" data-attributes="member: 48559"><p>Many reloaders, me included, don't full-length resize the cases when loading for one specific rifle chamber. There are several ways to accomplish this. One can buy "neck-sizing only" dies, which put no pressure on any part of the cartridge case except the neck (this is popular with benchrest shooters), or you can adjust the way your standard FL die works the case. The "quick and dirty" way is to simply unscrew the die slightly from its "according to the directions" position, retighten the lock ring, and have at it. The better way is to buy "competition shellholders" which are machined with "over-length" dimensions in increments of .002". You still set up the die in the standard fashion, screwing the die into the press until a slight camming or tension is felt at the end of the stroke. This tension is important for consistency in the final headspace length, and is not easily obtained with the "back the die out" method. When I work up a load for a new rifle, I start with a charge near the middle of what the manual calls for during break-in, and measure the headspace of these fired cases afterward. I then start with the +.010" shellholder, and see what that gives me, moving to the next shellholder until I find the one that moves the shoulder back the least amount. That one is recorded in the log as the "use for this rifle" shellholder until the barrel is worn out and replaced. I do periodically recheck the headspace on fired shells to make certain nothing has changed in the rifle (not likely, but I have heard of bolt lugs being set back by real hot loads, so I check it for the same reason I buy car insurance, and keep a fire extinguisher in the kitchen). The takeaway here is that a set of competition shellholders is cheaper than buying specialty dies for each cartridge you want to load, and you only need one set for each case head size you have, i.e. standard or magnum diameter.</p></blockquote><p></p>
[QUOTE="7magcreedmoor, post: 995221, member: 48559"] Many reloaders, me included, don't full-length resize the cases when loading for one specific rifle chamber. There are several ways to accomplish this. One can buy "neck-sizing only" dies, which put no pressure on any part of the cartridge case except the neck (this is popular with benchrest shooters), or you can adjust the way your standard FL die works the case. The "quick and dirty" way is to simply unscrew the die slightly from its "according to the directions" position, retighten the lock ring, and have at it. The better way is to buy "competition shellholders" which are machined with "over-length" dimensions in increments of .002". You still set up the die in the standard fashion, screwing the die into the press until a slight camming or tension is felt at the end of the stroke. This tension is important for consistency in the final headspace length, and is not easily obtained with the "back the die out" method. When I work up a load for a new rifle, I start with a charge near the middle of what the manual calls for during break-in, and measure the headspace of these fired cases afterward. I then start with the +.010" shellholder, and see what that gives me, moving to the next shellholder until I find the one that moves the shoulder back the least amount. That one is recorded in the log as the "use for this rifle" shellholder until the barrel is worn out and replaced. I do periodically recheck the headspace on fired shells to make certain nothing has changed in the rifle (not likely, but I have heard of bolt lugs being set back by real hot loads, so I check it for the same reason I buy car insurance, and keep a fire extinguisher in the kitchen). The takeaway here is that a set of competition shellholders is cheaper than buying specialty dies for each cartridge you want to load, and you only need one set for each case head size you have, i.e. standard or magnum diameter. [/QUOTE]
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