rem22long40x
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Do you fire form your brass and just neck size or are there dies for loading rounds for Ackley Improved chambers ?
257 Ackley Improved
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GooseGestapo
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Typically, for the first shot you're fire-forming. Thereafter, you're using a die correct for the specific case/chamber.
RCBS in particular, and Lee (and others) have .257AckImp dies. You'll want a set of the specific dies, just as you would for typical cartridges.
You can get neck sizing specific dies too. It really depends on the individual chamber in the rifle. In the early '80's, I traded for a Ruger #3 in .22Hornet, not knowing it had been recut to .22 K-Hornet. It was cut so poorly however, that even with K-Hornet dies, I couldn't get but 1-reloading before the cases split in the body. The chamber had been cut too large and was out-of-round... "Wobbled out" was the term a consulting/inspecting gunsmith used to describe what had happened with the reamer when the chamber was cut by an unknown individual. I traded it to an aquaintance who I informed that the chamber was "modified". He wasn't a reloader and wasn't concerned that the fired cases were unusable......
RCBS in particular, and Lee (and others) have .257AckImp dies. You'll want a set of the specific dies, just as you would for typical cartridges.
You can get neck sizing specific dies too. It really depends on the individual chamber in the rifle. In the early '80's, I traded for a Ruger #3 in .22Hornet, not knowing it had been recut to .22 K-Hornet. It was cut so poorly however, that even with K-Hornet dies, I couldn't get but 1-reloading before the cases split in the body. The chamber had been cut too large and was out-of-round... "Wobbled out" was the term a consulting/inspecting gunsmith used to describe what had happened with the reamer when the chamber was cut by an unknown individual. I traded it to an aquaintance who I informed that the chamber was "modified". He wasn't a reloader and wasn't concerned that the fired cases were unusable......
rem22long40x
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Thanks for the info.
Clark
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I headspaced my 257RAI like a 257R.
It should have been .004" short for crushing the brass at the base of the neck when the firing pushes the case forward.
So I have to form my brass with Cream of Wheat and 10 gr of pistol powder... and no bullet. That half forms the shoulder.
It should have been .004" short for crushing the brass at the base of the neck when the firing pushes the case forward.
So I have to form my brass with Cream of Wheat and 10 gr of pistol powder... and no bullet. That half forms the shoulder.
Old Dog Man
Member
Fire forming cases
My brother-in law fire formed 250 .223 cases by using pistol powder, filling case with tissue paper and pouring parifin wax on top. You should have seen his garage floor when he got through, it looked like a greased pig, the wax was even on the walls, Wish I had a pic. of it. Al
My brother-in law fire formed 250 .223 cases by using pistol powder, filling case with tissue paper and pouring parifin wax on top. You should have seen his garage floor when he got through, it looked like a greased pig, the wax was even on the walls, Wish I had a pic. of it. Al
greyling22
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to get your 257 ackley you fire a roberts case in your gun. then you have a fire formed case. You can either neck size from there (I use a robers collet die) or you can full length size using an ackley sizing die. midways has a couple of brands to choose from.
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