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I remember Huntingtons had the dies. I emailed them and they say they are unavailable. I will have to order a catalog. Cool huh? [This message has been edited by Roger Rothschild (edited 04-01-2002).] | ||
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Very cool! - Dan | |||
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Daddy Like! And to think there are places where they consider it to small for big game. | |||
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Got an email from CH4D, they'll make the dies for me no sweat. Email came in from Redding, they have them in stock...$138.00 but no form die. The A-Sq is only 0.063" shorter overall, I could just "trim" the .378 Weath or .338 Weath to length. The problem is pushing back the shoulder. At the base of the neck it has to go back 0.0461" and at the outside of the shoulder 0.0976". Would this crush the case? I know in one of the cartridge books Alphin had written about the .338, .460 Short, .495 and .500 A-Sq. He said on the .338 it had to be annealed in the shoulder area, reformed and neck reamed if I remember correctly. I would like to be able to understand how this cartridge gets 100 fps more velocity at pressure than others. I asked this question of my physics professor. I told him the .338 RUM was smaller, the .338 Lapua a little smaller and the .338/378 Weatherby bigger. The Lapua (27")ran at 58,000 psi, the Rum (24")at 62,400 psi and the Weatherby (26")at 52,000CUP. All approximately in the same area yet none can squeeze past 3000fps. The Weath can with Hodgdons Retumbo...3040fps. | |||
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A-square has made a number of 338's. The 338-06 is the smallest case, then the 338 A-square (shortened 378 WBY case, necked down to 338), and then the 338 Excaliber. - Dan | |||
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Roger, I also have a 338 ASQ, but it may become something else in the near future, because the barrel is approaching the end of its days. I formed my brass with from 378 Weatherby brass using just the FL die w/o the neck expander button. The cases did need to be annealed before sizing, and I used Imperial die sizing wax on absolutely clean cases. I also decided not to trim the cases prior to resizing in order to avoid having to do it twice. The resulting case necks were a pretty tight fit in the chamber, so I did turn them down to a moderate but not excessive clearance. I had good luck with H1000 and Barnes 225 gr X's. It would shove them out at about 3150 fps, and consistently put 3 into an inch. After three shots, the barrel would really heat up and walk shots out of the group. I did get some of the ASQ ammo with the 200 Nosler BT, but it was not accurate, nor was it as fast as their literature claimed. Good Luck, Steve ------------------ | |||
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Give RCBS a call if they do not have them they will make them for you. They sent me the dies for my 338 Excaliber about 9 months ago. Chris | ||
One of Us |
Does somebody know the actual shoulder angle of the 338 A-Square? I have been looking for a sample for my collection for many year, and for the 375 A-Square ( a necked up version of the 338) too. Maybe I can use some common die to form the shoulder from 378 Weath brass | |||
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One of Us |
.338 A-Square shoulder--- 35 degrees .338 Excalibur --- 28 degrees .375 A-Square --- 35 degrees DuggaBoye-O NRA-Life Whittington-Life TSRA-Life DRSS DSC HSC SCI | |||
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I have the 338 RUM and that rifle will put them down the range. I'm glad you found the 338 A-Square | |||
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