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7mm PRC
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<blockquote data-quote="deputyrpa" data-source="post: 3030983" data-attributes="member: 37786"><p>For reference:</p><p>I ran some N165 thru my 22" proof barrel (~130rnds) ,</p><p>175gr ALBRs seated to 3.2600" COAL, or 2.5855" Ogive</p><p>Fed 215 primers</p><p>Hornady once-fired brass <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite12" alt="o_O" title="Er... what? o_O" loading="lazy" data-shortname="o_O" /></p><p>Temp 52 F</p><p></p><p>65 gr - 2794 fps</p><p>65.3 - 2794</p><p>65.6 - 2810</p><p>65.9 - 2816</p><p>66.2 - 2817</p><p>66.5 - 2840</p><p>66.7 - 2847 (Hornady book max.)</p><p></p><p>No obvious pressure signs.</p><p></p><p>The group was 2MOA mainly horizontal, but I was in a rush shooting off a bag and towel because it was starting to rain. The last two round charges settled in closely. I had just changed the neck bushing in my sizing die from .312 to .310, giving me aabout 0.004" neck grip. Nothing like throwing in another variable to make things interdasting <img class="smilie smilie--emoji" loading="lazy" alt="😐" title="Neutral face :neutral_face:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f610.png" data-shortname=":neutral_face:" />. Maybe a bit much, but the .312 felt really light when seating. That said, I ran ALBRs, seated out to 3.300" with Staball HD and got 5-shot 3/4" group with the .312 bushing.</p></blockquote><p></p>
[QUOTE="deputyrpa, post: 3030983, member: 37786"] For reference: I ran some N165 thru my 22" proof barrel (~130rnds) , 175gr ALBRs seated to 3.2600" COAL, or 2.5855" Ogive Fed 215 primers Hornady once-fired brass o_O Temp 52 F 65 gr - 2794 fps 65.3 - 2794 65.6 - 2810 65.9 - 2816 66.2 - 2817 66.5 - 2840 66.7 - 2847 (Hornady book max.) No obvious pressure signs. The group was 2MOA mainly horizontal, but I was in a rush shooting off a bag and towel because it was starting to rain. The last two round charges settled in closely. I had just changed the neck bushing in my sizing die from .312 to .310, giving me aabout 0.004" neck grip. Nothing like throwing in another variable to make things interdasting 😐. Maybe a bit much, but the .312 felt really light when seating. That said, I ran ALBRs, seated out to 3.300" with Staball HD and got 5-shot 3/4" group with the .312 bushing. [/QUOTE]
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