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Using 7x57 brass to make 6mm Remington brass
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<blockquote data-quote="Hugnot" data-source="post: 2381350" data-attributes="member: 115658"><p>Been there & done that about 8 years ago.</p><p></p><p>PPU 7X57 brass from Graf's.</p><p></p><p>Neck down to about .290 OD using .260 R die <u>without</u> expander/decapper with die backed way out so no contact with shoulder.</p><p></p><p>Lube inside necks with powdered graphite, then neck down to 6mm using 6mm Rem die <u>with </u>expander/decapper, some brass spring back happens</p><p></p><p>Turn necks to .268 - .270 OD (.270 - .015 - .015 = .240, bullet diameter = .243)</p><p></p><p>Fire Form COW (cream of wheat or cream of rice, raid pantry).</p><p></p><p>Decap & clean & inspect insides of brass for FF debris.</p><p></p><p>Anneal - toast with propane for 1 min</p><p></p><p>F/L size using 6mm Rem or 6mm AI die <u>without</u> expander/decapper - working on uniformity & run-out concerns with annealed brass.</p><p></p><p>Trim & chamfer necks. 7X57 brass is a tiny bit shorter than 6mm Rem but trim to make uniform.</p><p></p><p>I took about 1 week to process 100 & used them for about 8 cycles. No problems but lots of work.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2381350, member: 115658"] Been there & done that about 8 years ago. PPU 7X57 brass from Graf's. Neck down to about .290 OD using .260 R die [U]without[/U] expander/decapper with die backed way out so no contact with shoulder. Lube inside necks with powdered graphite, then neck down to 6mm using 6mm Rem die [U]with [/U]expander/decapper, some brass spring back happens Turn necks to .268 - .270 OD (.270 - .015 - .015 = .240, bullet diameter = .243) Fire Form COW (cream of wheat or cream of rice, raid pantry). Decap & clean & inspect insides of brass for FF debris. Anneal - toast with propane for 1 min F/L size using 6mm Rem or 6mm AI die [U]without[/U] expander/decapper - working on uniformity & run-out concerns with annealed brass. Trim & chamfer necks. 7X57 brass is a tiny bit shorter than 6mm Rem but trim to make uniform. I took about 1 week to process 100 & used them for about 8 cycles. No problems but lots of work. [/QUOTE]
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Using 7x57 brass to make 6mm Remington brass
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