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The Basics, Starting Out
270 Sherman just starting out
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<blockquote data-quote="Alibiiv" data-source="post: 2249761" data-attributes="member: 69192"><p>There's a lot of data within these forums that ought to help answer some of your questions about fire forming brass. I started fire forming brass for the .270 Ackley Improved a few years ago. You "can" make a false shoulder as has been suggested in one of the replies. I am not familiar with the .270 Sherman case's overall dimension so not certain about using .270 Winchester brass. For me something that also was suggested was to leave the bullet seated out the .270 Winchester just far enough so as to keep the base of the cartridge held tightly against the bolt face to fire form the brass with. There's also the "hydro forming" process that will require special dies, Google or the forum will be your best friend here. No matter what process you decide upon, I "strongly" recommend that you make an investment in an annealing system before you decide to get too far into the process of fire forming. It will save you a lot of time, money and brass. I use a Sinclair mandrel die and a Forster neck turning system to clean up the necks on the cases <<-----and your going to need all that stuff too......... Some people may disagree with this statement, however I started out learning the fire forming process with inexpensive brass (Winchester) before I decided to invest in good brass to do my fire forming. Good luck with your project.</p></blockquote><p></p>
[QUOTE="Alibiiv, post: 2249761, member: 69192"] There's a lot of data within these forums that ought to help answer some of your questions about fire forming brass. I started fire forming brass for the .270 Ackley Improved a few years ago. You "can" make a false shoulder as has been suggested in one of the replies. I am not familiar with the .270 Sherman case's overall dimension so not certain about using .270 Winchester brass. For me something that also was suggested was to leave the bullet seated out the .270 Winchester just far enough so as to keep the base of the cartridge held tightly against the bolt face to fire form the brass with. There's also the "hydro forming" process that will require special dies, Google or the forum will be your best friend here. No matter what process you decide upon, I "strongly" recommend that you make an investment in an annealing system before you decide to get too far into the process of fire forming. It will save you a lot of time, money and brass. I use a Sinclair mandrel die and a Forster neck turning system to clean up the necks on the cases <<-----and your going to need all that stuff too......... Some people may disagree with this statement, however I started out learning the fire forming process with inexpensive brass (Winchester) before I decided to invest in good brass to do my fire forming. Good luck with your project. [/QUOTE]
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270 Sherman just starting out
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