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An ongoing review of a Nosler M48 Custom rifle...
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<blockquote data-quote="Ridgerunner665" data-source="post: 1078516" data-attributes="member: 12660"><p>MRP burn rate correction to make it match is .4</p><p></p><p>QuickLoad tweaking...this will likely change as more data is gathered.</p><p></p><p>The data below exactly matches my shooting today (based on visual indicators and chrono data), ...the case capacity has been measured and edited and the powder burn rate has been edited.</p><p></p><p>[code]Cartridge : .280 Ack Imp</p><p>Bullet : .284, 150, Nosler Accubond LR 58734 G7</p><p>Useable Case Capaci: 65.493 grain H2O = 4.252 cm³</p><p>Cartridge O.A.L. L6: 3.340 inch = 84.84 mm</p><p>Barrel Length : 24.0 inch = 609.6 mm</p><p>Powder : Norma MRP ?</p><p></p><p>Predicted data by increasing and decreasing the given charge,</p><p>incremented in steps of 0.806% of nominal charge.</p><p>CAUTION: Figures exceed maximum and minimum recommended loads !</p><p></p><p>Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time</p><p> % % Grains fps ft.lbs psi psi % ms</p><p></p><p>-08.1 90 57.00 2876 2756 48633 11743 99.6 1.278</p><p>-07.3 91 57.50 2901 2804 49996 11809 99.7 1.262</p><p>-06.5 92 58.00 2926 2852 51395 11872 99.8 1.246</p><p>-05.6 93 58.50 2951 2900 52833 11929 99.9 1.231</p><p>-04.8 94 59.00 2975 2948 54311 11983 100.0 1.215</p><p>-04.0 94 59.50 3000 2997 55830 12032 100.0 1.200 ! Near Maximum !</p><p>-03.2 95 60.00 3024 3046 57392 12077 100.0 1.185 ! Near Maximum !</p><p>-02.4 96 60.50 3048 3095 58997 12120 100.0 1.171 ! Near Maximum !</p><p>-01.6 97 61.00 3072 3144 60648 12161 100.0 1.156 ! Near Maximum !</p><p>-00.8 98 61.50 3097 3194 62345 12202 100.0 1.142 ! Near Maximum !</p><p>+00.0 98 62.00 3121 3243 64091 12243 100.0 1.128 ! Near Maximum !</p><p>+00.8 99 62.50 3144 3293 65886 12283 100.0 1.114 !DANGEROUS LOAD-DO NOT USE!</p><p>+01.6 100 63.00 3168 3343 67733 12322 100.0 1.101 !DANGEROUS LOAD-DO NOT USE!</p><p>+02.4 101 63.50 3192 3393 69633 12360 100.0 1.087 !DANGEROUS LOAD-DO NOT USE!</p><p>+03.2 102 64.00 3216 3444 71589 12398 100.0 1.074 !DANGEROUS LOAD-DO NOT USE!</p><p>+04.0 102 64.50 3239 3494 73602 12436 100.0 1.061 !DANGEROUS LOAD-DO NOT USE!</p><p> [/code]</p><p></p><p>[code]Cartridge : .280 Ack Imp</p><p>Bullet : .284, 160, Nosler AccuBond 54932</p><p>Useable Case Capaci: 64.516 grain H2O = 4.189 cm³</p><p>Cartridge O.A.L. L6: 3.340 inch = 84.84 mm</p><p>Barrel Length : 24.0 inch = 609.6 mm</p><p>Powder : Norma MRP ?</p><p></p><p>Predicted data by increasing and decreasing the given charge,</p><p>incremented in steps of 0.833% of nominal charge.</p><p>CAUTION: Figures exceed maximum and minimum recommended loads !</p><p></p><p>Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time</p><p> % % Grains fps ft.lbs psi psi % ms</p><p></p><p>-08.3 89 55.00 2766 2718 47504 11474 99.7 1.329</p><p>-07.5 89 55.50 2790 2765 48848 11539 99.8 1.312</p><p>-06.7 90 56.00 2814 2814 50230 11601 99.9 1.296</p><p>-05.8 91 56.50 2838 2862 51650 11658 100.0 1.279</p><p>-05.0 92 57.00 2862 2910 53109 11710 100.0 1.263</p><p>-04.2 93 57.50 2886 2959 54609 11759 100.0 1.247</p><p>-03.3 93 58.00 2910 3008 56150 11805 100.0 1.231 ! Near Maximum !</p><p>-02.5 94 58.50 2934 3057 57735 11851 100.0 1.216 ! Near Maximum !</p><p>-01.7 95 59.00 2957 3107 59364 11896 100.0 1.201 ! Near Maximum !</p><p>-00.8 96 59.50 2981 3156 61039 11941 100.0 1.186 ! Near Maximum !</p><p>+00.0 97 60.00 3004 3206 62761 11985 100.0 1.171 ! Near Maximum !</p><p>+00.8 97 60.50 3027 3256 64533 12029 100.0 1.157 !DANGEROUS LOAD-DO NOT USE!</p><p>+01.7 98 61.00 3050 3306 66355 12071 100.0 1.143 !DANGEROUS LOAD-DO NOT USE!</p><p>+02.5 99 61.50 3073 3356 68229 12113 100.0 1.128 !DANGEROUS LOAD-DO NOT USE!</p><p>+03.3 100 62.00 3097 3407 70158 12155 100.0 1.115 !DANGEROUS LOAD-DO NOT USE!</p><p>+04.2 101 62.50 3120 3457 72143 12196 100.0 1.101 !DANGEROUS LOAD-DO NOT USE! [/code]</p></blockquote><p></p>
[QUOTE="Ridgerunner665, post: 1078516, member: 12660"] MRP burn rate correction to make it match is .4 QuickLoad tweaking...this will likely change as more data is gathered. The data below exactly matches my shooting today (based on visual indicators and chrono data), ...the case capacity has been measured and edited and the powder burn rate has been edited. [code]Cartridge : .280 Ack Imp Bullet : .284, 150, Nosler Accubond LR 58734 G7 Useable Case Capaci: 65.493 grain H2O = 4.252 cm³ Cartridge O.A.L. L6: 3.340 inch = 84.84 mm Barrel Length : 24.0 inch = 609.6 mm Powder : Norma MRP ? Predicted data by increasing and decreasing the given charge, incremented in steps of 0.806% 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 -08.1 90 57.00 2876 2756 48633 11743 99.6 1.278 -07.3 91 57.50 2901 2804 49996 11809 99.7 1.262 -06.5 92 58.00 2926 2852 51395 11872 99.8 1.246 -05.6 93 58.50 2951 2900 52833 11929 99.9 1.231 -04.8 94 59.00 2975 2948 54311 11983 100.0 1.215 -04.0 94 59.50 3000 2997 55830 12032 100.0 1.200 ! Near Maximum ! -03.2 95 60.00 3024 3046 57392 12077 100.0 1.185 ! Near Maximum ! -02.4 96 60.50 3048 3095 58997 12120 100.0 1.171 ! Near Maximum ! -01.6 97 61.00 3072 3144 60648 12161 100.0 1.156 ! Near Maximum ! -00.8 98 61.50 3097 3194 62345 12202 100.0 1.142 ! Near Maximum ! +00.0 98 62.00 3121 3243 64091 12243 100.0 1.128 ! Near Maximum ! +00.8 99 62.50 3144 3293 65886 12283 100.0 1.114 !DANGEROUS LOAD-DO NOT USE! +01.6 100 63.00 3168 3343 67733 12322 100.0 1.101 !DANGEROUS LOAD-DO NOT USE! +02.4 101 63.50 3192 3393 69633 12360 100.0 1.087 !DANGEROUS LOAD-DO NOT USE! +03.2 102 64.00 3216 3444 71589 12398 100.0 1.074 !DANGEROUS LOAD-DO NOT USE! +04.0 102 64.50 3239 3494 73602 12436 100.0 1.061 !DANGEROUS LOAD-DO NOT USE! [/code] [code]Cartridge : .280 Ack Imp Bullet : .284, 160, Nosler AccuBond 54932 Useable Case Capaci: 64.516 grain H2O = 4.189 cm³ Cartridge O.A.L. L6: 3.340 inch = 84.84 mm Barrel Length : 24.0 inch = 609.6 mm Powder : Norma MRP ? Predicted data by increasing and decreasing the given charge, incremented in steps of 0.833% 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 -08.3 89 55.00 2766 2718 47504 11474 99.7 1.329 -07.5 89 55.50 2790 2765 48848 11539 99.8 1.312 -06.7 90 56.00 2814 2814 50230 11601 99.9 1.296 -05.8 91 56.50 2838 2862 51650 11658 100.0 1.279 -05.0 92 57.00 2862 2910 53109 11710 100.0 1.263 -04.2 93 57.50 2886 2959 54609 11759 100.0 1.247 -03.3 93 58.00 2910 3008 56150 11805 100.0 1.231 ! Near Maximum ! -02.5 94 58.50 2934 3057 57735 11851 100.0 1.216 ! Near Maximum ! -01.7 95 59.00 2957 3107 59364 11896 100.0 1.201 ! Near Maximum ! -00.8 96 59.50 2981 3156 61039 11941 100.0 1.186 ! Near Maximum ! +00.0 97 60.00 3004 3206 62761 11985 100.0 1.171 ! Near Maximum ! +00.8 97 60.50 3027 3256 64533 12029 100.0 1.157 !DANGEROUS LOAD-DO NOT USE! +01.7 98 61.00 3050 3306 66355 12071 100.0 1.143 !DANGEROUS LOAD-DO NOT USE! +02.5 99 61.50 3073 3356 68229 12113 100.0 1.128 !DANGEROUS LOAD-DO NOT USE! +03.3 100 62.00 3097 3407 70158 12155 100.0 1.115 !DANGEROUS LOAD-DO NOT USE! +04.2 101 62.50 3120 3457 72143 12196 100.0 1.101 !DANGEROUS LOAD-DO NOT USE! [/code] [/QUOTE]
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An ongoing review of a Nosler M48 Custom rifle...
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