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Rifles, Reloading, Optics, Equipment
Reloading
fire form or buy whats needed?
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<blockquote data-quote="Trickymissfit" data-source="post: 937400" data-attributes="member: 25383"><p>fire forming has it's pro's and con's. I do a good bit of fire forming, so have an idea. </p><p> </p><p>* the main issue with fire forming is brass displacement. If you doing a round like a .308 Ackley Improved, this is not all that much of an issue as some like 22-250AI. The case necks actually shrink to make up for the brass displacement in the shoulder area. (it's easier to move brass in the neck area than the shoulder). So always expect some shrinkage</p><p> </p><p>* Of course you can maybe buy a preformed case that is to size. That eliminates most all shrinkage problems. Still, it's a generic case that's meant to fit most chambers. Fire forming will still need to be done, but the above issues will be very minor compared to others.</p><p> </p><p>* the next reason to buy a preformed case is that the process is just plain nasty. But alas those nasty ones are rare and often unobtainable anyway (30 Meyer comes to light). </p><p> </p><p>so assuming the brass quality is good and the case reasonably fits the chamber; I'd jump on it! I fire form brass with some fairly stiff loads, but still not close to max. Maybe a good stiff mid range load. I like to use a cheap bullet jammed into the lands when possible. Others like the cream of wheat method. I used to know one well known BR shooter that fire formed with wax bullets that he made himself. I look for mid range loads that are of higher chamber pressures, and go from there.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 937400, member: 25383"] fire forming has it's pro's and con's. I do a good bit of fire forming, so have an idea. * the main issue with fire forming is brass displacement. If you doing a round like a .308 Ackley Improved, this is not all that much of an issue as some like 22-250AI. The case necks actually shrink to make up for the brass displacement in the shoulder area. (it's easier to move brass in the neck area than the shoulder). So always expect some shrinkage * Of course you can maybe buy a preformed case that is to size. That eliminates most all shrinkage problems. Still, it's a generic case that's meant to fit most chambers. Fire forming will still need to be done, but the above issues will be very minor compared to others. * the next reason to buy a preformed case is that the process is just plain nasty. But alas those nasty ones are rare and often unobtainable anyway (30 Meyer comes to light). so assuming the brass quality is good and the case reasonably fits the chamber; I'd jump on it! I fire form brass with some fairly stiff loads, but still not close to max. Maybe a good stiff mid range load. I like to use a cheap bullet jammed into the lands when possible. Others like the cream of wheat method. I used to know one well known BR shooter that fire formed with wax bullets that he made himself. I look for mid range loads that are of higher chamber pressures, and go from there. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
fire form or buy whats needed?
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