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Rifles, Reloading, Optics, Equipment
Reloading
Are Redding dies alot better than rcbs
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<blockquote data-quote="el matador" data-source="post: 1298396" data-attributes="member: 12193"><p>The Dillon 550 is a progressive press and uses shell plates. These cannot be easily shortened. Somebody on the Weatherby forum had this exact same problem with his Dillon 550. His dies worked fine on a single-stage press but not on the 550. He sent the dies in to RCBS, they shortened the sizing die, and now his setup works fine. If you cannot chamber the once-fired 338-378 brass after sizing its most likely because your die is not adjusted down far enough. If you have already adjusted it as far as it will go, and you have a hard cam-over with no case in the die, you will need to shorten the die. </p><p></p><p>I just took some measurements from my 338-378 Accumark. Fired brass measures .370" at the neck, and loaded rounds are .366". This is a surprisingly tight neck for a factory gun. </p><p></p><p>According to the above measurements my brass is .014" thick at the neck. If you are necking down .416 cases, its likely that your brass is now around .017" thick at the neck. You can measure a loaded round, but I'm guessing they are going to be around .372". No wonder it won't chamber. If your chamber is the same size as mine you will need to neck turn the brass.</p></blockquote><p></p>
[QUOTE="el matador, post: 1298396, member: 12193"] The Dillon 550 is a progressive press and uses shell plates. These cannot be easily shortened. Somebody on the Weatherby forum had this exact same problem with his Dillon 550. His dies worked fine on a single-stage press but not on the 550. He sent the dies in to RCBS, they shortened the sizing die, and now his setup works fine. If you cannot chamber the once-fired 338-378 brass after sizing its most likely because your die is not adjusted down far enough. If you have already adjusted it as far as it will go, and you have a hard cam-over with no case in the die, you will need to shorten the die. I just took some measurements from my 338-378 Accumark. Fired brass measures .370" at the neck, and loaded rounds are .366". This is a surprisingly tight neck for a factory gun. According to the above measurements my brass is .014" thick at the neck. If you are necking down .416 cases, its likely that your brass is now around .017" thick at the neck. You can measure a loaded round, but I'm guessing they are going to be around .372". No wonder it won't chamber. If your chamber is the same size as mine you will need to neck turn the brass. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Are Redding dies alot better than rcbs
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