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I need to work up some loads with the newer RL-17 Allient powder for the .348 Win. Could one of you guys that's handier than I on the computer give me a starting point for 200 and 250 gr. bullets? Ray Atkinson Atkinson Hunting Adventures 10 Ward Lane, Filer, Idaho, 83328 208-731-4120 rayatkinsonhunting@gmail.com | ||
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Cartridge : .348 Win. Bullet : .348, 250, Woodleigh FN 348 Useable Case Capaci: 60.058 grain H2O = 3.900 cm³ Cartridge O.A.L. L6: 2.795 inch = 70.99 mm Barrel Length : 24.0 inch = 609.6 mm Powder : Alliant Reloder-17 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 77 44.80 1949 2108 24253 6075 89.6 1.772 -18.0 79 45.92 1998 2216 25772 6284 90.9 1.726 -16.0 81 47.04 2047 2327 27386 6486 92.2 1.682 -14.0 83 48.16 2097 2441 29112 6680 93.4 1.638 -12.0 85 49.28 2146 2557 30948 6866 94.5 1.596 -10.0 87 50.40 2196 2677 32907 7042 95.5 1.555 -08.0 89 51.52 2246 2800 34997 7209 96.4 1.514 -06.0 91 52.64 2296 2925 37228 7364 97.2 1.474 -04.0 93 53.76 2345 3053 39614 7507 97.9 1.432 ! Near Maximum ! -02.0 94 54.88 2395 3183 42163 7638 98.6 1.391 ! Near Maximum ! +00.0 96 56.00 2444 3316 44896 7755 99.1 1.352 ! Near Maximum ! +02.0 98 57.12 2493 3451 47823 7859 99.4 1.314 !DANGEROUS LOAD-DO NOT USE! +04.0 100 58.24 2542 3587 50962 7947 99.7 1.277 !DANGEROUS LOAD-DO NOT USE! +06.0 102 59.36 2591 3726 54336 8021 99.9 1.242 !DANGEROUS LOAD-DO NOT USE! +08.0 104 60.48 2639 3866 57965 8078 100.0 1.207 !DANGEROUS LOAD-DO NOT USE! +10.0 106 61.60 2687 4008 61875 8124 100.0 1.174 !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 96 56.00 2567 3657 54337 7442 100.0 1.249 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 96 56.00 2271 2862 36673 7549 92.6 1.484 Cartridge : .348 Win. Bullet : .348, 200, Hornady FP 3410 Useable Case Capaci: 66.462 grain H2O = 4.315 cm³ Cartridge O.A.L. L6: 2.795 inch = 70.99 mm Barrel Length : 24.0 inch = 609.6 mm Powder : Alliant Reloder-17 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 78 50.40 2149 2051 23328 6391 84.2 1.617 -18.0 80 51.66 2205 2159 24805 6640 85.9 1.576 -16.0 82 52.92 2261 2271 26381 6885 87.4 1.536 -14.0 84 54.18 2318 2387 28062 7123 88.9 1.496 -12.0 86 55.44 2376 2507 29857 7355 90.3 1.458 -10.0 88 56.70 2434 2630 31776 7578 91.7 1.420 -08.0 90 57.96 2492 2757 33828 7792 92.9 1.383 -06.0 92 59.22 2550 2887 36023 7996 94.1 1.346 -04.0 94 60.48 2608 3021 38374 8188 95.1 1.309 -02.0 96 61.74 2667 3159 40894 8368 96.1 1.271 ! Near Maximum ! +00.0 98 63.00 2726 3299 43599 8534 97.0 1.234 ! Near Maximum ! +02.0 100 64.26 2784 3443 46506 8685 97.7 1.198 !DANGEROUS LOAD-DO NOT USE! +04.0 102 65.52 2843 3589 49633 8821 98.4 1.163 !DANGEROUS LOAD-DO NOT USE! +06.0 104 66.78 2901 3739 52999 8940 98.9 1.129 !DANGEROUS LOAD-DO NOT USE! +08.0 106 68.04 2960 3891 56634 9042 99.4 1.096 !DANGEROUS LOAD-DO NOT USE! +10.0 108 69.30 3018 4045 60558 9125 99.7 1.064 !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 98 63.00 2887 3702 52665 8420 100.0 1.135 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 98 63.00 2512 2803 35682 8021 88.3 1.355 As usual just my $.02 Paul K | |||
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Thanks, going to have to give that a try! | |||
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Mr. Atkinson: What bullets exactly? | |||
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Not only is the specific bullet needed, the COAL is also critical to accurately predict interior ballistics. GOOGLE HOTLINK FIX FOR BLOCKED PHOTOBUCKET IMAGES https://chrome.google.com/webs...inkfix=1516144253810 | |||
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wildcat junkie: But for many of bullets you can find recommended COAL in other reloading manuals (it is not dependent on powder used). That was also my point. But for RL-17, QuickLoad doesn't work well. Will explain: QL will shows higher velocities and pressures than in real, because it can't compute with some special properties of RL-17 (like surface treatment resulting in delayed start of burning or so). So if it is safe in QL, it will be absolutely safe in real world. I use this powder exclusively in .375 H&H and 8x57IS for many years, so have gained some experience with it. Jiri | |||
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I load RL-17 in 8X57, 7mm-08 & 30/40 Krag & yes, it runs about 3gr slower than predicted results. I use Mv for the predicted pressure, not charge weight. For example, in 30/40 Krag I get 2500 fps W/160gr .308 FTX bulltes W/49.5grs of RL-17 which is predicted to be closer to 2700fps @ 46,000psi. If one interpolates the actual Mv W/predicted charge weight/pressure it come out to what 46.6gr & 38,000psi would yield. I use actual Mv to estimate chamber pressure. Glad to hear you are having simiar results I can get almost identical performance W/Vv-N550 compared to RL-7 in my 8x57 but in that case I reach predicted Mv W/2 grs less than predicted when using Vv-N550. QL seems to be a bit pessimistic W/Vv-N550 while it is overly enthusiastic W/RL-17. As far as COAL & differing bullets, I am referring to the actual COAL of the particular bullet loaded. That does have a significant bearing on results. You need BOTH. I do not use recommended COAL from manuals. I use whatever length needed to get the bullet just off the lands as long as my magazine will accommodate the necessary COAL to do so. I'm loading my 8X57 to a bit over 2700fps W200gr Speer Hotcores & RL-17 @ 3.125" COAL. (my8X57 barrel has a short throat) GOOGLE HOTLINK FIX FOR BLOCKED PHOTOBUCKET IMAGES https://chrome.google.com/webs...inkfix=1516144253810 | |||
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wildcat junkie: Yes, I use RL-17 and QL similar way. I use this 8x57IS load: 3.5g (54gr) RL-17 Norma Oryx 196gr bullet RWS brass COAL: 77mm (3.031") Velocity from vz.24 rifle: ~ 790 m/s ~2592 fps Primer: Federal GM215M Jiri | |||
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Your results are very similar to mine. 55.5gr RL-17 Speer Hotcore 200gr bullet Cases formed from once fire Lake City 30-06 GI Brass Mv 2730 fps Coal: 3.125" Action is commercial Yugoslavian Inytermediate length VZ500 with an exceptional M98K take off barrel W/a short throat.   I have found that RL-17 will duplicate Vv-N550 with 2 addition grains of RL-17 in my 8X57 & 1 more grain of RL-17 in a Savage AXIS-II 7mm-08 W/140gr Nosler Ballistic tips.  GOOGLE HOTLINK FIX FOR BLOCKED PHOTOBUCKET IMAGES https://chrome.google.com/webs...inkfix=1516144253810 | |||
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