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quick load help needed

 
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  #1  
Old 09-07-2009, 02:45 PM
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Join Date: Mar 2008
Location: North Vernon, in
Posts: 260
quick load help needed

i have a 260 rem. custom built gun
i found that it shoots 42 gr of h4350 pretty well but a guy that i know shoots the high power rifle class uses h1000 in his 260 with outstanding results so i tried a few loads and was he right. low pressure with faster bullets and accuracy was outstanding. .3 @ 100 five shots
I have a bunch of magpro which is just a little faster than h1000 but i can not find any loading data for my 260 on it so i was wondering if someone with quick loads could be so kind to help me out.

bullets to use are 139 Lapua, 140 Amax and 142 smks?
if you wish not to post results please just email me marty.bryant@gmail.com

thanks
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  #2  
Old 09-08-2009, 10:54 AM
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Join Date: Feb 2008
Location: Wampum, PA
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Re: quick load help needed

Cartridge : .260 Rem
Bullet : .264, 139, Lapua Scenar GB458 6018
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Accurate MAGPRO

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 80 36.00 2061 1311 22562 6642 76.3 1.899
-18.0 82 36.90 2117 1383 24034 6917 78.0 1.850
-16.0 84 37.80 2173 1457 25609 7191 79.6 1.803
-14.0 86 38.70 2230 1535 27299 7463 81.2 1.756
-12.0 88 39.60 2288 1616 29111 7732 82.7 1.711
-10.0 90 40.50 2346 1699 31056 7996 84.2 1.666
-08.0 92 41.40 2405 1786 33147 8256 85.7 1.623
-06.0 94 42.30 2465 1875 35396 8509 87.1 1.580
-04.0 96 43.20 2525 1967 37817 8755 88.5 1.536
-02.0 98 44.10 2585 2063 40428 8993 89.7 1.488
+00.0 100 45.00 2646 2161 43245 9222 91.0 1.442
+02.0 102 45.90 2707 2262 46290 9440 92.2 1.398
+04.0 104 46.80 2769 2366 49584 9647 93.2 1.355
+06.0 106 47.70 2830 2473 53159 9841 94.3 1.313 ! Near Maximum !
+08.0 108 48.60 2893 2582 57039 10021 95.2 1.272 ! Near Maximum !
+10.0 110 49.50 2955 2695 61261 10186 96.1 1.233 !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 100 45.00 2828 2468 53453 9547 97.4 1.318 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 100 45.00 2423 1812 34732 8393 80.7 1.591
__________________________________________________ ______________
Cartridge : .260 Rem
Bullet : .264, 140, Hornady A-MAX 26332
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Accurate MAGPRO

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 81 36.00 2067 1328 22945 6680 76.8 1.892
-18.0 83 36.90 2123 1401 24453 6955 78.5 1.843
-16.0 85 37.80 2179 1477 26070 7228 80.1 1.796
-14.0 87 38.70 2237 1555 27804 7499 81.7 1.749
-12.0 89 39.60 2295 1637 29665 7767 83.2 1.703
-10.0 91 40.50 2354 1722 31666 8030 84.7 1.659
-08.0 93 41.40 2413 1810 33806 8288 86.2 1.615
-06.0 95 42.30 2473 1901 36132 8539 87.6 1.572
-04.0 97 43.20 2533 1994 38625 8782 88.9 1.525
-02.0 99 44.10 2593 2091 41322 9017 90.2 1.478
+00.0 101 45.00 2654 2190 44230 9242 91.4 1.432
+02.0 103 45.90 2716 2293 47376 9456 92.6 1.387
+04.0 105 46.80 2778 2398 50784 9658 93.6 1.344
+06.0 107 47.70 2840 2507 54491 9847 94.6 1.302 ! Near Maximum !
+08.0 109 48.60 2902 2618 58515 10022 95.6 1.262 ! Near Maximum !
+10.0 111 49.50 2965 2732 62902 10181 96.4 1.223 !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 101 45.00 2835 2498 54713 9539 97.7 1.309 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 45.00 2432 1839 35494 8436 81.2 1.582
__________________________________________________ ____________
Cartridge : .260 Rem
Bullet : .264, 142, Sierra HPBT MatchK 1742
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Accurate MAGPRO

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 80 36.00 2064 1343 23156 6741 77.5 1.897
-18.0 82 36.90 2119 1416 24679 7016 79.1 1.848
-16.0 84 37.80 2176 1493 26312 7289 80.7 1.801
-14.0 86 38.70 2233 1573 28062 7560 82.3 1.754
-12.0 88 39.60 2291 1655 29944 7827 83.8 1.708
-10.0 91 40.50 2349 1740 31964 8089 85.3 1.663
-08.0 93 41.40 2408 1829 34136 8345 86.7 1.619
-06.0 95 42.30 2468 1920 36473 8595 88.1 1.576
-04.0 97 43.20 2527 2014 38992 8836 89.4 1.529
-02.0 99 44.10 2588 2111 41706 9069 90.7 1.481
+00.0 101 45.00 2648 2211 44645 9291 91.9 1.435
+02.0 103 45.90 2709 2314 47821 9503 93.0 1.390
+04.0 105 46.80 2770 2420 51261 9702 94.0 1.347 ! Near Maximum !
+06.0 107 47.70 2832 2528 54994 9887 95.0 1.306 ! Near Maximum !
+08.0 109 48.60 2894 2640 59053 10058 95.9 1.265 ! Near Maximum !
+10.0 111 49.50 2956 2754 63474 10213 96.7 1.226 !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 101 45.00 2826 2518 55269 9562 97.9 1.312 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 45.00 2428 1859 35800 8506 81.8 1.586
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  #3  
Old 09-08-2009, 11:28 AM
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Join Date: Mar 2009
Location: provence france
Posts: 24
Re: quick load help needed

if you have a twist rate 8" you should shot 139grs for best results.
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  #4  
Old 09-08-2009, 12:21 PM
Silver Member
 
Join Date: Mar 2008
Location: North Vernon, in
Posts: 260
Re: quick load help needed

i do have 1:8 twist and i would like to thank both you for helping me out. i really appreciate it.
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  #5  
Old 09-09-2009, 08:53 AM
Junior Member
 
Join Date: Mar 2009
Location: provence france
Posts: 24
Re: quick load help needed

hi,if you can find vithavuori powder , use n150 , 37.8grs and primers cci br2.it 's the must.
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