1971silversurfer Posted August 21, 2015 Report Share Posted August 21, 2015 Does anyone have a burn rate chart for RS powders? A range buddy wants to fire RS40 through his 22-250 with 55 vmax's. No load data on the RS website to help him....I said to find a comparable powder and work up....trouble is i cant find a burn rate chart featuring RS. Any help appreciated. Martin. Link to comment Share on other sites More sharing options...
srvet Posted August 21, 2015 Report Share Posted August 21, 2015 Does anyone have a burn rate chart for RS powders? A range buddy wants to fire RS40 through his 22-250 with 55 vmax's. No load data on the RS website to help him....I said to find a comparable powder and work up....trouble is i cant find a burn rate chart featuring RS. Any help appreciated. Martin. Is this what you are after?? http://www.reload-swiss.com/en/media/editor_media/reload_swiss/pdf/Relative_burn-off_velocity.pdf Link to comment Share on other sites More sharing options...
1971silversurfer Posted August 21, 2015 Author Report Share Posted August 21, 2015 Is this what you are after?? http://www.reload-swiss.com/en/media/editor_media/reload_swiss/pdf/Relative_burn-off_velocity.pdf Exactly...cheers Link to comment Share on other sites More sharing options...
BlueBoy69 Posted August 21, 2015 Report Share Posted August 21, 2015 Going by QuickLOAD, its a bit fast for the combination. The powders RS50 and RS52 would be better. Here's the data for RS40. Cartridge : .22-250 Rem. (SAAMI)Bullet : .224, 53, Hornady V-MAX BT 22265Usable Case Capacity: 39.656 grain H2O = 2.575 cm³Cartridge O.A.L. L6: 2.350 inch = 59.69 mmBarrel Length : 24.0 inch = 609.6 mmPowder : ReloadSwiss RS 40Predicted data by increasing and decreasing the given charge,incremented in steps of 2.0% of nominal charge.CAUTION: Figures exceed maximum and minimum recommended loads !Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time % % Grains fps ft.lbs psi psi % ms-20.0 73 27.20 3052 1096 32830 7902 93.6 1.220-18.0 75 27.88 3121 1146 34930 8114 94.6 1.191-16.0 77 28.56 3189 1197 37155 8317 95.6 1.163-14.0 78 29.24 3257 1248 39511 8509 96.4 1.130-12.0 80 29.92 3325 1301 42005 8691 97.2 1.099-10.0 82 30.60 3392 1354 44646 8861 97.9 1.068-08.0 84 31.28 3459 1408 47442 9018 98.4 1.039-06.0 86 31.96 3525 1462 50403 9163 98.9 1.011-04.0 88 32.64 3590 1517 53538 9294 99.3 0.984-02.0 89 33.32 3655 1572 56860 9410 99.6 0.958 ! Near Maximum !+00.0 91 34.00 3719 1627 60380 9512 99.9 0.933 ! Near Maximum !+02.0 93 34.68 3782 1683 64112 9598 100.0 0.909 ! Near Maximum !+04.0 95 35.36 3845 1739 68071 9669 100.0 0.886 !DANGEROUS LOAD-DO NOT USE!+06.0 97 36.04 3907 1796 72273 9734 100.0 0.863 !DANGEROUS LOAD-DO NOT USE!+08.0 99 36.72 3968 1852 76735 9796 100.0 0.842 !DANGEROUS LOAD-DO NOT USE!+10.0 100 37.40 4028 1909 81479 9855 100.0 0.821 !DANGEROUS LOAD-DO NOT USE!Results caused by ± 10% powder lot-to-lot burning rate variation using nominal chargeData for burning rate increased by 10% relative to nominal value:+Ba 91 34.00 3848 1742 70441 9198 100.0 0.873 !DANGEROUS LOAD-DO NOT USE!Data for burning rate decreased by 10% relative to nominal value:-Ba 91 34.00 3532 1468 50379 9512 96.6 1.012 Link to comment Share on other sites More sharing options...
1971silversurfer Posted August 22, 2015 Author Report Share Posted August 22, 2015 Going by QuickLOAD, its a bit fast for the combination. The powders RS50 and RS52 would be better. Here's the data for RS40. Cartridge : .22-250 Rem. (SAAMI) Bullet : .224, 53, Hornady V-MAX BT 22265 Usable Case Capacity: 39.656 grain H2O = 2.575 cm³ Cartridge O.A.L. L6: 2.350 inch = 59.69 mm Barrel Length : 24.0 inch = 609.6 mm Powder : ReloadSwiss RS 40 Predicted data by increasing and decreasing the given charge, incremented in steps of 2.0% of nominal charge. CAUTION: Figures exceed maximum and minimum recommended loads ! Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time % % Grains fps ft.lbs psi psi % ms -20.0 73 27.20 3052 1096 32830 7902 93.6 1.220 -18.0 75 27.88 3121 1146 34930 8114 94.6 1.191 -16.0 77 28.56 3189 1197 37155 8317 95.6 1.163 -14.0 78 29.24 3257 1248 39511 8509 96.4 1.130 -12.0 80 29.92 3325 1301 42005 8691 97.2 1.099 -10.0 82 30.60 3392 1354 44646 8861 97.9 1.068 -08.0 84 31.28 3459 1408 47442 9018 98.4 1.039 -06.0 86 31.96 3525 1462 50403 9163 98.9 1.011 -04.0 88 32.64 3590 1517 53538 9294 99.3 0.984 -02.0 89 33.32 3655 1572 56860 9410 99.6 0.958 ! Near Maximum ! +00.0 91 34.00 3719 1627 60380 9512 99.9 0.933 ! Near Maximum ! +02.0 93 34.68 3782 1683 64112 9598 100.0 0.909 ! Near Maximum ! +04.0 95 35.36 3845 1739 68071 9669 100.0 0.886 !DANGEROUS LOAD-DO NOT USE! +06.0 97 36.04 3907 1796 72273 9734 100.0 0.863 !DANGEROUS LOAD-DO NOT USE! +08.0 99 36.72 3968 1852 76735 9796 100.0 0.842 !DANGEROUS LOAD-DO NOT USE! +10.0 100 37.40 4028 1909 81479 9855 100.0 0.821 !DANGEROUS LOAD-DO NOT USE! Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge Data for burning rate increased by 10% relative to nominal value: +Ba 91 34.00 3848 1742 70441 9198 100.0 0.873 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 91 34.00 3532 1468 50379 9512 96.6 1.012 Thanks for the update. Link to comment Share on other sites More sharing options...
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