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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM load development questions
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<blockquote data-quote="MontanaRifleman" data-source="post: 778763" data-attributes="member: 11717"><p>Cerwin,</p><p></p><p>Per request, here's my current handloadiing process. Some of this is actually new for me.</p><p></p><p>Starting with new brass, </p><p></p><p>Lube w/ Imperial Sizing Wax including inside of neck and FL size with bushing and expander. I will use a bushing that will shrink neck to about 2 thou smaller than expander ball. </p><p></p><p>Measure all case lengths and pick a length to trim to. </p><p></p><p>Chamfer outside and inside necks with VLD tool</p><p></p><p>Debur flash holes</p><p></p><p>Square and uniform primer pockets</p><p></p><p>Weigh brass and cull anything excessively out of acceptable weight range.</p><p></p><p>Weigh bullets and cull the heaviest and lightest out for load development, fowlers, etc. This is not necessary for CE or GS bullets.</p><p></p><p>Prime pockets with RCBS hand priming tool. I like to feel the primers being seated. It gives a good idea as to the condition of the brass.</p><p></p><p>Measure powder with RCBS Chargemaster, Spot check charges with RCBS 10-10 scale occasionally</p><p></p><p>Seat bullets. I use Reading micrometer and Horandy New Dimension. I will be putting VLD plugs in them and upgrading the Hornady's with micrometer tops.</p><p></p><p>Fired brass. Run through the tumbler with crushed walnut shells. Am considering getting a Lyman ultrasonic cleaner.</p><p></p><p>Then repeat process. </p><p></p><p>FL size just enough so brass fits snugly but easily into chamber. I will probably adjust the neck bushing to leave about a .020 fired donut around the base of the neck.</p><p></p><p>Remeasure fired and sized brass again and trim if necessary.</p><p></p><p>Clean primer pockets.</p><p></p><p>Seat primers.</p><p></p><p>Charge cases and seat bullets.</p><p></p><p>I may add a step to the new brass prep the ream inside of necks to remove irregularities in thickness.</p><p></p><p>I will play with using and not using an expander ball, check the runout and see of there is a shot group difference. If not, i will remove the expander ball and use a neck bushing to size for about 2 thou neck tension.</p><p></p><p>And that's where I am in handloading process.</p><p></p><p>I load for 22-250, 25-06, 7 RM, 300 WSM and 300 RUM. 6.5 WSM and 6-284 on the way.</p><p></p><p>I use standard non-bushing FL dies for the22-250, 25-06 and 7. That may will probably change.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 778763, member: 11717"] Cerwin, Per request, here's my current handloadiing process. Some of this is actually new for me. Starting with new brass, Lube w/ Imperial Sizing Wax including inside of neck and FL size with bushing and expander. I will use a bushing that will shrink neck to about 2 thou smaller than expander ball. Measure all case lengths and pick a length to trim to. Chamfer outside and inside necks with VLD tool Debur flash holes Square and uniform primer pockets Weigh brass and cull anything excessively out of acceptable weight range. Weigh bullets and cull the heaviest and lightest out for load development, fowlers, etc. This is not necessary for CE or GS bullets. Prime pockets with RCBS hand priming tool. I like to feel the primers being seated. It gives a good idea as to the condition of the brass. Measure powder with RCBS Chargemaster, Spot check charges with RCBS 10-10 scale occasionally Seat bullets. I use Reading micrometer and Horandy New Dimension. I will be putting VLD plugs in them and upgrading the Hornady's with micrometer tops. Fired brass. Run through the tumbler with crushed walnut shells. Am considering getting a Lyman ultrasonic cleaner. Then repeat process. FL size just enough so brass fits snugly but easily into chamber. I will probably adjust the neck bushing to leave about a .020 fired donut around the base of the neck. Remeasure fired and sized brass again and trim if necessary. Clean primer pockets. Seat primers. Charge cases and seat bullets. I may add a step to the new brass prep the ream inside of necks to remove irregularities in thickness. I will play with using and not using an expander ball, check the runout and see of there is a shot group difference. If not, i will remove the expander ball and use a neck bushing to size for about 2 thou neck tension. And that's where I am in handloading process. I load for 22-250, 25-06, 7 RM, 300 WSM and 300 RUM. 6.5 WSM and 6-284 on the way. I use standard non-bushing FL dies for the22-250, 25-06 and 7. That may will probably change. [/QUOTE]
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