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Hunting
The Basics, Starting Out
Case Life Expectancy
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<blockquote data-quote="Buffalobob" data-source="post: 261469" data-attributes="member: 8"><p>I do not use small base dies and have no thoughts on them one way or the other.</p><p></p><p></p><p>What I assume your gunsmith is building you is a minimum SAAMI chamber. This will accommodate any ammunition that actually complies with SAAMI specs and most of the name brands will. A minimum SAAMI chamber will be a snug fit for the cartridge and it will not be flopping around in there like a run over toad frog. The cartridge and bullet will be aligned with the center of the bore. Such a chamber is very accurate while still allowing the use of commercial ammunition. The real question would be what kind of throat is he putting in it. You would like to be able to reach the lands with a high BC bullet but not have the throat so short that the bullet is shoved back into the case eating up capacity.</p><p></p><p>A regular resizing die works fine with a minimum SAAMI chamber being as it puts the cartridge back into SAAMI dimensions.</p><p></p><p>I do not think you will get increased case life with max loads with a tight chamber being as the first thing to go is the primer pockets and they are not in the chamber but are in the bolt face.</p><p></p><p>I do not think you actually need a Neco. If you want one and can afford it then fine. Most of the concentricity gauges will do what a person needs until they decide to go into competition reloading. You can go down into the reloading section and look at the endless number of threads involving runout.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 261469, member: 8"] I do not use small base dies and have no thoughts on them one way or the other. What I assume your gunsmith is building you is a minimum SAAMI chamber. This will accommodate any ammunition that actually complies with SAAMI specs and most of the name brands will. A minimum SAAMI chamber will be a snug fit for the cartridge and it will not be flopping around in there like a run over toad frog. The cartridge and bullet will be aligned with the center of the bore. Such a chamber is very accurate while still allowing the use of commercial ammunition. The real question would be what kind of throat is he putting in it. You would like to be able to reach the lands with a high BC bullet but not have the throat so short that the bullet is shoved back into the case eating up capacity. A regular resizing die works fine with a minimum SAAMI chamber being as it puts the cartridge back into SAAMI dimensions. I do not think you will get increased case life with max loads with a tight chamber being as the first thing to go is the primer pockets and they are not in the chamber but are in the bolt face. I do not think you actually need a Neco. If you want one and can afford it then fine. Most of the concentricity gauges will do what a person needs until they decide to go into competition reloading. You can go down into the reloading section and look at the endless number of threads involving runout. [/QUOTE]
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