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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm-08: Heavy bullets & sporter barrels
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<blockquote data-quote="therifleman556" data-source="post: 1417812" data-attributes="member: 101898"><p>Got out to the field today. </p><p>RL19 was slow, as expected but accuracy was quite good. H414 was not as impressive accuracy wise, but velocity looked more in line with what [USER=11011]@jimbires[/USER] posted. One interesting point, I began seeing pressure signs with all loads. I shot loads in a round robin type relay (1 shot of each charge at different targets until I had three round groups). </p><p>As the shooting progressed, even the lighter charges of 414 began to show sticky extraction so I'm wondering if I don't have a carbon issue in the neck/throat area (they extracted easily in the beginning).</p><p></p><p>Here's the breakdown:</p><p>H414 CCI 250 mag primer, resized military brass (55.2gr water capacity)</p><p>2.262" cbto (.010" off rifling)</p><p>2.914" coal</p><p></p><p>44.5 gr-</p><p>-2727</p><p>-2721</p><p>-2727</p><p></p><p>45.0 gr-</p><p>-2745</p><p>-2751</p><p>-did not shoot</p><p></p><p>45.5 gr-</p><p>-2775</p><p>-2755</p><p>-did not shoot</p><p></p><p>45.7 gr-</p><p>-did not shoot any of these</p><p></p><p>RL19 CCI 200 primer, Peterson brass (54.7 gr capacity) </p><p>2.262" cbto</p><p>2.914" coal</p><p></p><p>47.0 gr-</p><p>-2538</p><p>-2546</p><p>-2530</p><p></p><p>47.5 gr-</p><p>-2597</p><p>-2573</p><p>-2526</p><p></p><p>48.0 gr- </p><p>-2606</p><p>-2601</p><p>-did not shoot</p><p></p><p>So 414 looks most promising from a consistency standpoint. I probably didn't need the magnum primer, but I had them and wanted to try them. The groups with RL19 were much better, but velocity was disappointing. Does anyone think 414 could be tuned up with seating length and a charge weight or primer switch? Or should I run the same test with RL15 and IMR 4350 (both of which I have)?</p></blockquote><p></p>
[QUOTE="therifleman556, post: 1417812, member: 101898"] Got out to the field today. RL19 was slow, as expected but accuracy was quite good. H414 was not as impressive accuracy wise, but velocity looked more in line with what [USER=11011]@jimbires[/USER] posted. One interesting point, I began seeing pressure signs with all loads. I shot loads in a round robin type relay (1 shot of each charge at different targets until I had three round groups). As the shooting progressed, even the lighter charges of 414 began to show sticky extraction so I'm wondering if I don't have a carbon issue in the neck/throat area (they extracted easily in the beginning). Here's the breakdown: H414 CCI 250 mag primer, resized military brass (55.2gr water capacity) 2.262" cbto (.010" off rifling) 2.914" coal 44.5 gr- -2727 -2721 -2727 45.0 gr- -2745 -2751 -did not shoot 45.5 gr- -2775 -2755 -did not shoot 45.7 gr- -did not shoot any of these RL19 CCI 200 primer, Peterson brass (54.7 gr capacity) 2.262" cbto 2.914" coal 47.0 gr- -2538 -2546 -2530 47.5 gr- -2597 -2573 -2526 48.0 gr- -2606 -2601 -did not shoot So 414 looks most promising from a consistency standpoint. I probably didn't need the magnum primer, but I had them and wanted to try them. The groups with RL19 were much better, but velocity was disappointing. Does anyone think 414 could be tuned up with seating length and a charge weight or primer switch? Or should I run the same test with RL15 and IMR 4350 (both of which I have)? [/QUOTE]
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7mm-08: Heavy bullets & sporter barrels
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