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Rifles, Reloading, Optics, Equipment
Reloading
Old recipe deemed Unsafe in new manuals. Suggestions?
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<blockquote data-quote="Mike Matteson" data-source="post: 2283039" data-attributes="member: 101791"><p>Newer reloading manual are reflexing faster twist rates or have to allow for that. I note that in my 220 Swift. I use IMR 4064 powder in that rifle. i use the original Sierra Manual for reloading info. The newest Sierra reduced the powder load and velocity by a several 100fps. The twist rate changed from 1-14 to 1-12. I never had an over pressure with that load. It made me mad. At the same time I feel that gun manufactures are pushing their new rifle out and look at me. Most of the time they compare the new cartridge with older cartridges and show greater velocities. I find that they are comparing a 26" barrel to a 24" barrel. Back when the 22/250 came out. The big push was that the 220 swift burn barrels out in a 1000 round or so. So get a 22/250. Now I read that a lot of the rifles being used today are burning out barrel in 500 to 1000 rounds. Now all my rifle are the older slower twist rates. With the newer twist rates, I guess that there is more chamber pressure being build up with the faster twist rate. So the Manuals are dropping the powder loads down to correct the twist rate barrels. Who known what rifle is going to be used, and what twist it's going to be. So bottom line is they have to play is safe. </p><p>The bottom line is I don't throw up my old reloading manuals, and I date all the time, because of newer cartridges being placed on the market. </p><p>So I would start out with lower powder charges, and step it up to where you were before, and watching for pressure signs. Not to many round to shot and to if the old load hold true. I feel it will, but that me. So in about 10 rounds you will know where you are at.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2283039, member: 101791"] Newer reloading manual are reflexing faster twist rates or have to allow for that. I note that in my 220 Swift. I use IMR 4064 powder in that rifle. i use the original Sierra Manual for reloading info. The newest Sierra reduced the powder load and velocity by a several 100fps. The twist rate changed from 1-14 to 1-12. I never had an over pressure with that load. It made me mad. At the same time I feel that gun manufactures are pushing their new rifle out and look at me. Most of the time they compare the new cartridge with older cartridges and show greater velocities. I find that they are comparing a 26" barrel to a 24" barrel. Back when the 22/250 came out. The big push was that the 220 swift burn barrels out in a 1000 round or so. So get a 22/250. Now I read that a lot of the rifles being used today are burning out barrel in 500 to 1000 rounds. Now all my rifle are the older slower twist rates. With the newer twist rates, I guess that there is more chamber pressure being build up with the faster twist rate. So the Manuals are dropping the powder loads down to correct the twist rate barrels. Who known what rifle is going to be used, and what twist it's going to be. So bottom line is they have to play is safe. The bottom line is I don't throw up my old reloading manuals, and I date all the time, because of newer cartridges being placed on the market. So I would start out with lower powder charges, and step it up to where you were before, and watching for pressure signs. Not to many round to shot and to if the old load hold true. I feel it will, but that me. So in about 10 rounds you will know where you are at. [/QUOTE]
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Reloading
Old recipe deemed Unsafe in new manuals. Suggestions?
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