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Rifles, Reloading, Optics, Equipment
Reloading
.200" Leade: Any problem here?
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<blockquote data-quote="Goofycat" data-source="post: 305070" data-attributes="member: 6504"><p>Here's the scoop. I called Hornady with a few questions. Regarding case length, they said to make sure the cases are never over the maximum SAAMI published length (listed in the Hornady loading manual), but that if the cases are shorter than the maximum, to trim to the length of the shortest case in the batch, as long that trim length is no shorter than the one listed in the manual. For the .270, the shortest trim length is .010" less than the maximum length. In the current batch I am trimming, that means that I will trim all the cases to 2.535"...the length of the shortest case in the batch, and about midway between the max and minimum lengths in the Hornady manual.</p><p></p><p>As for the question of freebore vs. their suggested published powder charge data, they said that their data is based upon the maximum cartridge OAL, (listed in the manual as C.O.L.) as measured from the base of the cartridge to the tip of the bullet, not from base to ogive. The reason given as to why not the ogive was that the OAL in this case is because of different magazine lengths in different rifles. The C.O.L. lengths are listed below each of the pictured bullets. So...this answers the question of freebore vs. pressures. I.e., their powder charges are based upon their C.O.L. figures. Whether or not this method is better for the smaller centerfire calibers used in small varmint hunting and/or BR reloading, I don't know. I load fairly close to the lands for those rifles. But as for the .270 I think I will reload, taking into consideration that bullet seating with a much longer freebore is recommended and not to be a problem. </p><p></p><p>At this stage, I will start with the figures recommended by Hornady, reload three cartridges at .030", three at .040" and three at .050", then check for accuracy and signs of pressure overload.</p></blockquote><p></p>
[QUOTE="Goofycat, post: 305070, member: 6504"] Here's the scoop. I called Hornady with a few questions. Regarding case length, they said to make sure the cases are never over the maximum SAAMI published length (listed in the Hornady loading manual), but that if the cases are shorter than the maximum, to trim to the length of the shortest case in the batch, as long that trim length is no shorter than the one listed in the manual. For the .270, the shortest trim length is .010" less than the maximum length. In the current batch I am trimming, that means that I will trim all the cases to 2.535"...the length of the shortest case in the batch, and about midway between the max and minimum lengths in the Hornady manual. As for the question of freebore vs. their suggested published powder charge data, they said that their data is based upon the maximum cartridge OAL, (listed in the manual as C.O.L.) as measured from the base of the cartridge to the tip of the bullet, not from base to ogive. The reason given as to why not the ogive was that the OAL in this case is because of different magazine lengths in different rifles. The C.O.L. lengths are listed below each of the pictured bullets. So...this answers the question of freebore vs. pressures. I.e., their powder charges are based upon their C.O.L. figures. Whether or not this method is better for the smaller centerfire calibers used in small varmint hunting and/or BR reloading, I don't know. I load fairly close to the lands for those rifles. But as for the .270 I think I will reload, taking into consideration that bullet seating with a much longer freebore is recommended and not to be a problem. At this stage, I will start with the figures recommended by Hornady, reload three cartridges at .030", three at .040" and three at .050", then check for accuracy and signs of pressure overload. [/QUOTE]
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Reloading
.200" Leade: Any problem here?
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