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Rifles, Reloading, Optics, Equipment
Reloading
.270Win Chamber too small
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<blockquote data-quote="Innovative" data-source="post: 313424" data-attributes="member: 527"><p>Namibia .........</p><p> </p><p>Whatever you do, <strong>don't</strong> shave down your shellholder (or your die). I see this done about once a week, and it never helps anyone. Here's why; die manufacturers design their FL resizing dies to make handloads small enough to fit in even the smallest chamber in any given caliber, and the tolerances for modern dies are very accurate.</p><p> </p><p>You need to understand your RCBS Precision Mic to get accurate measurements. Keep in mind that you're only interested in the "difference" between your fireformed case and your handloads. You'll probably get the most consistent readings if you remove the primer in every case that you measure (just don't resize your fireformed case). </p><p> </p><p>You should <strong>not</strong> be able to "feel" your handloads chamber - not even a little bit. The only two possible reasons for your cases fitting too tight . . . . . . is they're either too long (at the shoulder), or they're too wide (about .500" above the base). </p><p> </p><p>You should be able to determine which is your problem <u>length</u> (at the shoulder) or <u>width</u> above the web of your cases. Our <strong>Digital Headspace Gauge</strong> works the same way comparing your handloads to your fireformed case. Unlike the RCBS Precision Mic it's a bit easier to use, and it works on ALL different calibers. </p><p> </p><p>- Innovative</p></blockquote><p></p>
[QUOTE="Innovative, post: 313424, member: 527"] Namibia ......... Whatever you do, [B]don't[/B] shave down your shellholder (or your die). I see this done about once a week, and it never helps anyone. Here's why; die manufacturers design their FL resizing dies to make handloads small enough to fit in even the smallest chamber in any given caliber, and the tolerances for modern dies are very accurate. You need to understand your RCBS Precision Mic to get accurate measurements. Keep in mind that you're only interested in the "difference" between your fireformed case and your handloads. You'll probably get the most consistent readings if you remove the primer in every case that you measure (just don't resize your fireformed case). You should [B]not[/B] be able to "feel" your handloads chamber - not even a little bit. The only two possible reasons for your cases fitting too tight . . . . . . is they're either too long (at the shoulder), or they're too wide (about .500" above the base). You should be able to determine which is your problem [U]length[/U] (at the shoulder) or [U]width[/U] above the web of your cases. Our [B]Digital Headspace Gauge[/B] works the same way comparing your handloads to your fireformed case. Unlike the RCBS Precision Mic it's a bit easier to use, and it works on ALL different calibers. - Innovative [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.270Win Chamber too small
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