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Rifles, Reloading, Optics, Equipment
Reloading
264 142LR AccuBonds
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<blockquote data-quote="65WSM" data-source="post: 1098431" data-attributes="member: 9551"><p>I was able to try R-26 in one of my 6.5 WSMs with 140 gr to test it. I tried it in the 6.5-284 as well. The velocity in the 6.5-284 was disappointing. It is a M-70 with a 26 inch gain twist Bartlien barrel. I used 130 Sciroccos coated with HBN in Lapua cases with F210 primers. </p><p>54.0 gr IMR- 7828 SSC 2889 fps (control)</p><p>53.0 gr R-26 2987 fps</p><p>53.5 gr R-26 2927 fps </p><p>54.0 gr R-26 3057 fps Ejector slot mark on base of case</p><p>54.5 gr Pulled bullets and recycled.</p><p></p><p>In the larger 6.5 WSM case, R-26 performed better. I could not get the chronograph to work but my normal loads with 140 gr are 66.6 gr of Retumbo or 67.7gr of N-570 for 3240 fps (28 inch Krieger). I got up to 65.0 gr of R-26 with 140 Sierras without dangerous pressure signs. The point of impact of the R-26 loads was two inches above the control Retumbo load (300 yards). The spread was within 2 inches at 300 yards despite the ladder testing from 62-65 gr by half grains. I also tested 130 gr Sciroccos with 65.0 gr of R-26 with no difficulties. Interesting the Sciroccos were 4 inches to the right of the Sierras. Norma .270 WSM cases necked down and annealed. I used CCI 250 primers.</p><p></p><p>I will bet that R-26 is a winner in the big case .264 Win Mag for velocity and accuracy both. We just have to figure out which bullet it weight it is suited for.</p></blockquote><p></p>
[QUOTE="65WSM, post: 1098431, member: 9551"] I was able to try R-26 in one of my 6.5 WSMs with 140 gr to test it. I tried it in the 6.5-284 as well. The velocity in the 6.5-284 was disappointing. It is a M-70 with a 26 inch gain twist Bartlien barrel. I used 130 Sciroccos coated with HBN in Lapua cases with F210 primers. 54.0 gr IMR- 7828 SSC 2889 fps (control) 53.0 gr R-26 2987 fps 53.5 gr R-26 2927 fps 54.0 gr R-26 3057 fps Ejector slot mark on base of case 54.5 gr Pulled bullets and recycled. In the larger 6.5 WSM case, R-26 performed better. I could not get the chronograph to work but my normal loads with 140 gr are 66.6 gr of Retumbo or 67.7gr of N-570 for 3240 fps (28 inch Krieger). I got up to 65.0 gr of R-26 with 140 Sierras without dangerous pressure signs. The point of impact of the R-26 loads was two inches above the control Retumbo load (300 yards). The spread was within 2 inches at 300 yards despite the ladder testing from 62-65 gr by half grains. I also tested 130 gr Sciroccos with 65.0 gr of R-26 with no difficulties. Interesting the Sciroccos were 4 inches to the right of the Sierras. Norma .270 WSM cases necked down and annealed. I used CCI 250 primers. I will bet that R-26 is a winner in the big case .264 Win Mag for velocity and accuracy both. We just have to figure out which bullet it weight it is suited for. [/QUOTE]
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