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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 mm SHERMAN SHORTMAG vs 7 SAUM
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<blockquote data-quote="lancetkenyon" data-source="post: 2535795" data-attributes="member: 68875"><p>N570 was too bulky for my 7SS w. 184 Hyb. I couldn't get enough in the case to pressure out or get the speeds I wanted in a SA fed by a WSM mag. </p><p></p><p>My 7SS is a 24" 1:8.4" Proof CF.</p><p>I have been running a max load of N565 with the 184 @ 2838fps. 2855fps was max where I got my first sign of pressure, and powder was quite compressed too.</p><p></p><p>I also have a super accurate moderate load with H1000 @ 2788fps. Got up to 2812, but was out of case space. No pressure.</p><p>RL23 got me to 2800 too. But was maxed out there with first sign of pressure.</p><p></p><p>Being from AZ where hunting/shooting temps can be anywhere from 4° to 110+°, and with my past experience with the 84°+ pressure spike, I always steer away from RL26. Well, yesterday, I decided to try RL26 as a "late season" option. Glad I did. While my shooting was done yesterday from 75°-90°, I was pleasantly surprised. I got the same 184 Hyb up to 2933fps with no pressure as my last load test (90° when I shot them). I could probably go .5-1gr more at least, but Summer is approaching and very soon, even 85° will be unavailable until late Sept, even at sun-up. I might revisit RL26 in the fall when it cools down again. </p><p></p><p>This was my 3 shot group at 2902fps w. RL26 and the 184 Hyb @ 2.180" CBTO (where my rifle likes them seated).</p><p>2902fps, ES 7.</p><p>[ATTACH=full]367569[/ATTACH]</p></blockquote><p></p>
[QUOTE="lancetkenyon, post: 2535795, member: 68875"] N570 was too bulky for my 7SS w. 184 Hyb. I couldn't get enough in the case to pressure out or get the speeds I wanted in a SA fed by a WSM mag. My 7SS is a 24" 1:8.4" Proof CF. I have been running a max load of N565 with the 184 @ 2838fps. 2855fps was max where I got my first sign of pressure, and powder was quite compressed too. I also have a super accurate moderate load with H1000 @ 2788fps. Got up to 2812, but was out of case space. No pressure. RL23 got me to 2800 too. But was maxed out there with first sign of pressure. Being from AZ where hunting/shooting temps can be anywhere from 4° to 110+°, and with my past experience with the 84°+ pressure spike, I always steer away from RL26. Well, yesterday, I decided to try RL26 as a "late season" option. Glad I did. While my shooting was done yesterday from 75°-90°, I was pleasantly surprised. I got the same 184 Hyb up to 2933fps with no pressure as my last load test (90° when I shot them). I could probably go .5-1gr more at least, but Summer is approaching and very soon, even 85° will be unavailable until late Sept, even at sun-up. I might revisit RL26 in the fall when it cools down again. This was my 3 shot group at 2902fps w. RL26 and the 184 Hyb @ 2.180" CBTO (where my rifle likes them seated). 2902fps, ES 7. [ATTACH type="full" alt="20220522_115802.jpg"]367569[/ATTACH] [/QUOTE]
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7 mm SHERMAN SHORTMAG vs 7 SAUM
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