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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243 win, IMR 4451, RL 26 velocity results
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<blockquote data-quote="Idaho Trecker" data-source="post: 1075009" data-attributes="member: 67706"><p>Made some range time today and just thought I would put some of my findings out there for these newer powders. I was mostly concerned about finding my max pressure/velocity today and here is what I came up with. These were shot at 200 yards and 15 feet from the chrono (shooting chrony) to muzzle. </p><p></p><p>I was running a 24" barrel from a Sako 85 varmint and Vortex Viper HST 6-24.</p><p></p><p><strong>I forgot to mention my bore and all bullets were coated with HBN</strong></p><p></p><p>105 Hornady BTHP</p><p>RL 26</p><p>46 2952</p><p>47 3058</p><p>48 3117</p><p>49 3212</p><p></p><p>The primers looked good through the 49 grains but I had a faint extractor mark on the case head. I think there is room for more speed. </p><p>My downfall is the fact that my rifle has a 1:10 twist and I have not been able to stabilize 105 bthp or A max. I was hopeful that the bthp would stabilize since it doesnt say a 1:9 or faster required.</p><p></p><p>on to the 87 V Max and IMR 4451</p><p>43 3086</p><p>44 3177</p><p>45 3272</p><p>46 3299</p><p></p><p>At 200 yards the vertical distance from the first shot to second was 1 3/4 inch. From shot 2 to 3 there was 1/8" vertical and horizontal!!! and the last shot was actually another 1/4" lower than shot 2 vertically but 3 1/2 inches right (dont think it was me)</p><p></p><p>It looks like the 4451 is going to work great for my setup and with a .4 bc its not terrible for some paper punchin way out there.</p></blockquote><p></p>
[QUOTE="Idaho Trecker, post: 1075009, member: 67706"] Made some range time today and just thought I would put some of my findings out there for these newer powders. I was mostly concerned about finding my max pressure/velocity today and here is what I came up with. These were shot at 200 yards and 15 feet from the chrono (shooting chrony) to muzzle. I was running a 24" barrel from a Sako 85 varmint and Vortex Viper HST 6-24. [B]I forgot to mention my bore and all bullets were coated with HBN[/B] 105 Hornady BTHP RL 26 46 2952 47 3058 48 3117 49 3212 The primers looked good through the 49 grains but I had a faint extractor mark on the case head. I think there is room for more speed. My downfall is the fact that my rifle has a 1:10 twist and I have not been able to stabilize 105 bthp or A max. I was hopeful that the bthp would stabilize since it doesnt say a 1:9 or faster required. on to the 87 V Max and IMR 4451 43 3086 44 3177 45 3272 46 3299 At 200 yards the vertical distance from the first shot to second was 1 3/4 inch. From shot 2 to 3 there was 1/8" vertical and horizontal!!! and the last shot was actually another 1/4" lower than shot 2 vertically but 3 1/2 inches right (dont think it was me) It looks like the 4451 is going to work great for my setup and with a .4 bc its not terrible for some paper punchin way out there. [/QUOTE]
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243 win, IMR 4451, RL 26 velocity results
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