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Rifles, Reloading, Optics, Equipment
Reloading
Reloading 7MM rem mag for the first time
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<blockquote data-quote="RustyRick" data-source="post: 980259" data-attributes="member: 69572"><p>Your chamber is built using one reamer. Your die is built using a different reamer probably 100'ds miles away. As reamers are used they get worn our. Hence they start larger than they end up and get thrown out at a Minimum size. </p><p></p><p>So you have this variable in actual sizes of finished product. So if you get a chamber with a new reamer (large) and buy a die just before they threw it out (small) you'll have a lot of brass working back and forth. Hence your case life will be shortened. </p><p> </p><p>I used to get 12 - 15 rounds out of my 7Mm Mag brass. But I always had just a bit of a snug fit when chambering which I never worried about.</p><p> </p><p>Of course it's a given that the other issue is how close to maximum your loading the brass.</p><p> </p><p>Therefore neck sizing works the brass the least. </p><p> </p><p>I don't understand the logic of full length sizing every "3-4" round. A case can't expand any larger than your chamber except for length. So if your OAL is kept in check then all should be good. Your cases are "fire formed" with every shot. So I think it's just a worried loaded that FL's his brass periodically?</p></blockquote><p></p>
[QUOTE="RustyRick, post: 980259, member: 69572"] Your chamber is built using one reamer. Your die is built using a different reamer probably 100'ds miles away. As reamers are used they get worn our. Hence they start larger than they end up and get thrown out at a Minimum size. So you have this variable in actual sizes of finished product. So if you get a chamber with a new reamer (large) and buy a die just before they threw it out (small) you'll have a lot of brass working back and forth. Hence your case life will be shortened. I used to get 12 - 15 rounds out of my 7Mm Mag brass. But I always had just a bit of a snug fit when chambering which I never worried about. Of course it's a given that the other issue is how close to maximum your loading the brass. Therefore neck sizing works the brass the least. I don't understand the logic of full length sizing every "3-4" round. A case can't expand any larger than your chamber except for length. So if your OAL is kept in check then all should be good. Your cases are "fire formed" with every shot. So I think it's just a worried loaded that FL's his brass periodically? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Reloading 7MM rem mag for the first time
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