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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cooper 280AI Chamber question.
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<blockquote data-quote="Ridgerunner665" data-source="post: 1001144" data-attributes="member: 12660"><p>The best powders are on the top...you'll notice, Retumbo is way down the list....EDIT: oops, thats 180 grain Bergers...will do 168's down below.</p><p></p><p></p><p>[code]Cartridge : .280 Ack Imp Nosler brass</p><p>Bullet : .284, 180, Berger VLD G7 #28405</p><p>Useable Case Capaci: 61.933 grain H2O = 4.021 cm³</p><p>Cartridge O.A.L. L6: 3.244 inch = 82.40 mm</p><p>Barrel Length : 24.0 inch = 609.6 mm</p><p></p><p>Predicted Data for Indicated Charges of the Following Powders.</p><p>Matching Maximum Pressure: 64000 psi, or 441 MPa</p><p>or a maximum loading ratio or filling of 107 %</p><p>These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.</p><p>C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested</p><p>loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand</p><p>that all of the listed powders can be unsuitable for the given combination of cartridge, bullet</p><p>and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.</p><p>USE ONLY FOR COMPARISON !</p><p></p><p>63 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.</p><p>Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time</p><p> % Grains Gramm fps % psi psi ms</p><p>--------------------------------- -----------------------------------------------------------------</p><p>Vihtavuori N560 102.5 59.8 3.87 2877 99.3 64000 12547 1.212 ! Near Maximum !</p><p>Norma MRP 100.7 60.0 3.89 2876 100.0 64000 12085 1.218 ! Near Maximum !</p><p>Accurate MAGPRO 102.7 62.4 4.04 2872 98.5 64000 12683 1.218 ! Near Maximum !</p><p>IMR 7828 SSC 101.2 59.4 3.85 2866 99.6 64000 12112 1.203 ! Near Maximum !</p><p>IMR 7828 107.0 59.4 3.85 2866 99.6 64000 12112 1.203 ! Near Maximum !</p><p>ADI AR 2213 102.2 59.0 3.82 2852 99.5 64000 12028 1.201 ! Near Maximum !</p><p>Alliant Reloder-22 102.7 59.3 3.84 2851 99.9 64000 11985 1.219 ! Near Maximum !</p><p>Winchester WXR 105.5 59.6 3.86 2851 99.9 64000 12010 1.219 ! Near Maximum !</p><p>ADI AP 2214 106.1 62.9 4.08 2849 99.7 64000 11861 1.198 ! Near Maximum !</p><p>Ramshot Magnum 102.5 63.8 4.13 2835 100.0 64000 11417 1.212 ! Near Maximum !</p><p>Alliant Reloder-25 107.0 60.8 3.94 2832 100.0 60451 11548 1.238 ! Near Maximum !</p><p>ADI AR 2209 99.1 56.2 3.64 2810 99.9 64000 11360 1.210 ! Near Maximum !</p><p>Alliant Reloder-19 99.6 56.9 3.69 2808 99.9 64000 11427 1.218 ! Near Maximum !</p><p>Alliant Reloder-17 90.2 54.0 3.50 2803 100.0 64000 10627 1.223 ! Near Maximum !</p><p>Ramshot Hunter 95.1 56.1 3.63 2795 100.0 64000 10944 1.226 ! Near Maximum !</p><p>Hodgdon H4831 104.9 58.2 3.77 2789 99.0 64000 11364 1.215 ! Near Maximum !</p><p>Hodgdon H4831 SC 100.8 58.2 3.77 2789 99.0 64000 11364 1.215 ! Near Maximum !</p><p>Vihtavuori N570 107.0 64.4 4.17 2787 94.9 53594 13370 1.303</p><p>Norma 204 94.5 55.7 3.61 2785 99.8 64000 11140 1.219 ! Near Maximum !</p><p>Norma MRP 2 107.0 61.1 3.96 2774 99.1 55771 12285 1.296 ! Near Maximum !</p><p>Vihtavuori N550 92.0 53.7 3.48 2770 100.0 64000 10602 1.237 ! Near Maximum !</p><p>Norma URP 94.7 53.5 3.46 2769 100.0 64000 10458 1.233 ! Near Maximum !</p><p>Winchester Supreme 780 98.3 59.2 3.83 2765 99.8 64000 10876 1.224 ! Near Maximum !</p><p>Accurate 4350 93.7 53.5 3.47 2763 100.0 64000 10398 1.251 ! Near Maximum !</p><p>Alliant Reloder-33 107.0 67.1 4.35 2759 94.9 52606 13192 1.315</p><p>Vihtavuori N165 105.0 59.3 3.84 2758 100.0 64000 10633 1.229 ! Near Maximum !</p><p>Accurate 3100 102.8 58.7 3.80 2755 100.0 64000 10488 1.253 ! Near Maximum !</p><p>IMR 4831 99.3 54.3 3.52 2751 100.0 64000 10228 1.242 ! Near Maximum !</p><p>Hodgdon H4350 97.2 54.3 3.52 2746 100.0 64000 10473 1.224 ! Near Maximum !</p><p>Vihtavuori N160 105.2 57.6 3.73 2745 99.4 64000 10725 1.224 ! Near Maximum !</p><p>IMR 4350 95.4 54.2 3.51 2745 100.0 64000 10445 1.225 ! Near Maximum !</p><p>Hodgdon Hybrid 100V 97.1 53.6 3.48 2723 100.0 64000 9639 1.236 ! Near Maximum !</p><p>ADI AR 2217 107.0 60.4 3.92 2716 98.7 54728 11535 1.287</p><p>Hodgdon H1000 107.0 60.4 3.92 2716 98.7 54728 11535 1.287</p><p>ADI AR 2225 107.0 61.4 3.98 2674 99.7 47959 11964 1.368</p><p>Hodgdon Retumbo 107.0 61.4 3.98 2674 99.7 47959 11964 1.368</p><p>Vihtavuori N150 95.0 51.2 3.32 2661 100.0 64000 9128 1.249 ! Near Maximum !</p><p>ADI AR 2218 107.0 65.1 4.22 2650 91.8 47630 13021 1.367</p><p>Vihtavuori N135 91.2 47.2 3.06 2608 100.0 64000 8415 1.263 ! Near Maximum !</p><p>Vihtavuori 24N41 107.0 65.1 4.22 2607 86.9 50380 11558 1.345</p><p>Norma 217 107.0 60.2 3.90 2592 98.4 42475 12062 1.461</p><p>Vihtavuori N170 107.0 60.4 3.92 2571 92.0 50011 11002 1.381</p><p>Hodgdon H870 107.0 63.1 4.09 2569 93.2 42657 12216 1.454</p><p>Alliant Reloder-50 107.0 66.1 4.28 2533 89.7 40123 12490 1.510</p><p>Hodgdon US 869 107.0 65.1 4.22 2431 82.8 40931 10791 1.490</p><p>Hodgdon 50BMG 107.0 62.0 4.02 2429 78.6 41190 10751 1.485</p><p>Accurate 8700 107.0 63.7 4.13 2359 86.1 36829 10567 1.559</p><p>Vihtavuori 20N29 107.0 65.7 4.26 2337 82.7 35447 10628 1.591</p><p> [/code]</p></blockquote><p></p>
[QUOTE="Ridgerunner665, post: 1001144, member: 12660"] The best powders are on the top...you'll notice, Retumbo is way down the list....EDIT: oops, thats 180 grain Bergers...will do 168's down below. [code]Cartridge : .280 Ack Imp Nosler brass Bullet : .284, 180, Berger VLD G7 #28405 Useable Case Capaci: 61.933 grain H2O = 4.021 cm³ Cartridge O.A.L. L6: 3.244 inch = 82.40 mm Barrel Length : 24.0 inch = 609.6 mm Predicted Data for Indicated Charges of the Following Powders. Matching Maximum Pressure: 64000 psi, or 441 MPa or a maximum loading ratio or filling of 107 % These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window. C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations. USE ONLY FOR COMPARISON ! 63 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped. Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time % Grains Gramm fps % psi psi ms --------------------------------- ----------------------------------------------------------------- Vihtavuori N560 102.5 59.8 3.87 2877 99.3 64000 12547 1.212 ! Near Maximum ! Norma MRP 100.7 60.0 3.89 2876 100.0 64000 12085 1.218 ! Near Maximum ! Accurate MAGPRO 102.7 62.4 4.04 2872 98.5 64000 12683 1.218 ! Near Maximum ! IMR 7828 SSC 101.2 59.4 3.85 2866 99.6 64000 12112 1.203 ! Near Maximum ! IMR 7828 107.0 59.4 3.85 2866 99.6 64000 12112 1.203 ! Near Maximum ! ADI AR 2213 102.2 59.0 3.82 2852 99.5 64000 12028 1.201 ! Near Maximum ! Alliant Reloder-22 102.7 59.3 3.84 2851 99.9 64000 11985 1.219 ! Near Maximum ! Winchester WXR 105.5 59.6 3.86 2851 99.9 64000 12010 1.219 ! Near Maximum ! ADI AP 2214 106.1 62.9 4.08 2849 99.7 64000 11861 1.198 ! Near Maximum ! Ramshot Magnum 102.5 63.8 4.13 2835 100.0 64000 11417 1.212 ! Near Maximum ! Alliant Reloder-25 107.0 60.8 3.94 2832 100.0 60451 11548 1.238 ! Near Maximum ! ADI AR 2209 99.1 56.2 3.64 2810 99.9 64000 11360 1.210 ! Near Maximum ! Alliant Reloder-19 99.6 56.9 3.69 2808 99.9 64000 11427 1.218 ! Near Maximum ! Alliant Reloder-17 90.2 54.0 3.50 2803 100.0 64000 10627 1.223 ! Near Maximum ! Ramshot Hunter 95.1 56.1 3.63 2795 100.0 64000 10944 1.226 ! Near Maximum ! Hodgdon H4831 104.9 58.2 3.77 2789 99.0 64000 11364 1.215 ! Near Maximum ! Hodgdon H4831 SC 100.8 58.2 3.77 2789 99.0 64000 11364 1.215 ! Near Maximum ! Vihtavuori N570 107.0 64.4 4.17 2787 94.9 53594 13370 1.303 Norma 204 94.5 55.7 3.61 2785 99.8 64000 11140 1.219 ! Near Maximum ! Norma MRP 2 107.0 61.1 3.96 2774 99.1 55771 12285 1.296 ! Near Maximum ! Vihtavuori N550 92.0 53.7 3.48 2770 100.0 64000 10602 1.237 ! Near Maximum ! Norma URP 94.7 53.5 3.46 2769 100.0 64000 10458 1.233 ! Near Maximum ! Winchester Supreme 780 98.3 59.2 3.83 2765 99.8 64000 10876 1.224 ! Near Maximum ! Accurate 4350 93.7 53.5 3.47 2763 100.0 64000 10398 1.251 ! Near Maximum ! Alliant Reloder-33 107.0 67.1 4.35 2759 94.9 52606 13192 1.315 Vihtavuori N165 105.0 59.3 3.84 2758 100.0 64000 10633 1.229 ! Near Maximum ! Accurate 3100 102.8 58.7 3.80 2755 100.0 64000 10488 1.253 ! Near Maximum ! IMR 4831 99.3 54.3 3.52 2751 100.0 64000 10228 1.242 ! Near Maximum ! Hodgdon H4350 97.2 54.3 3.52 2746 100.0 64000 10473 1.224 ! Near Maximum ! Vihtavuori N160 105.2 57.6 3.73 2745 99.4 64000 10725 1.224 ! Near Maximum ! IMR 4350 95.4 54.2 3.51 2745 100.0 64000 10445 1.225 ! Near Maximum ! Hodgdon Hybrid 100V 97.1 53.6 3.48 2723 100.0 64000 9639 1.236 ! Near Maximum ! ADI AR 2217 107.0 60.4 3.92 2716 98.7 54728 11535 1.287 Hodgdon H1000 107.0 60.4 3.92 2716 98.7 54728 11535 1.287 ADI AR 2225 107.0 61.4 3.98 2674 99.7 47959 11964 1.368 Hodgdon Retumbo 107.0 61.4 3.98 2674 99.7 47959 11964 1.368 Vihtavuori N150 95.0 51.2 3.32 2661 100.0 64000 9128 1.249 ! Near Maximum ! ADI AR 2218 107.0 65.1 4.22 2650 91.8 47630 13021 1.367 Vihtavuori N135 91.2 47.2 3.06 2608 100.0 64000 8415 1.263 ! Near Maximum ! Vihtavuori 24N41 107.0 65.1 4.22 2607 86.9 50380 11558 1.345 Norma 217 107.0 60.2 3.90 2592 98.4 42475 12062 1.461 Vihtavuori N170 107.0 60.4 3.92 2571 92.0 50011 11002 1.381 Hodgdon H870 107.0 63.1 4.09 2569 93.2 42657 12216 1.454 Alliant Reloder-50 107.0 66.1 4.28 2533 89.7 40123 12490 1.510 Hodgdon US 869 107.0 65.1 4.22 2431 82.8 40931 10791 1.490 Hodgdon 50BMG 107.0 62.0 4.02 2429 78.6 41190 10751 1.485 Accurate 8700 107.0 63.7 4.13 2359 86.1 36829 10567 1.559 Vihtavuori 20N29 107.0 65.7 4.26 2337 82.7 35447 10628 1.591 [/code] [/QUOTE]
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