Thread: .300 Blaser Magnum Loads

Originally Posted by Double Shot

Hey team,

Well I have used the .300 Blaser Magnum factory ammo up and the dies arrived this week from the US, so now to start thinking about loading up some brass...

Plenty of you chaps and lasses out there do far more shooting than me, so some ideas would be appreciated.

I'm thinking 180g Accubonds, perhaps 180g SBT Game kings and a 165g projectile...

Have been doing a bit of digging around the web but not having much luck on finding any loading info, where might some good places to visit be...

Cheers Craig

Quickload says its useable capacity is about 1 gr more than the 300 win mag.
Punched a couple of numbers in with 2213 & imr 7828.
Its a norma developed cartridge right? They would be the first place I would look

Cartridge : .300 Blaser Mag
Bullet : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 82.128 grain H2O = 5.332 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : ADI AR 2213

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 56.00 2197 1929 24363 8773 81.9 1.722
-18.0 75 57.40 2253 2028 25867 9118 83.5 1.680
-16.0 77 58.80 2309 2131 27465 9459 85.0 1.640
-14.0 79 60.20 2366 2237 29162 9797 86.4 1.600
-12.0 80 61.60 2423 2346 30965 10129 87.8 1.561
-10.0 82 63.00 2480 2459 32882 10455 89.1 1.523
-08.0 84 64.40 2538 2575 34920 10773 90.4 1.486
-06.0 86 65.80 2596 2694 37088 11083 91.6 1.449
-04.0 88 67.20 2655 2817 39397 11382 92.8 1.407
-02.0 90 68.60 2714 2943 41855 11669 93.8 1.366
+00.0 91 70.00 2772 3072 44475 11944 94.8 1.327
+02.0 93 71.40 2831 3204 47270 12204 95.8 1.290
+04.0 95 72.80 2891 3339 50252 12450 96.6 1.253
+06.0 97 74.20 2950 3477 53441 12679 97.3 1.218 ! Near Maximum !
+08.0 99 75.60 3009 3618 56848 12890 98.0 1.183 ! Near Maximum !
+10.0 101 77.00 3068 3762 60496 13083 98.6 1.150 !DANGEROUS LOAD-DO NOT USE!

Cartridge : .300 Blaser Mag
Bullet : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 82.128 grain H2O = 5.332 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 7828

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 82 60.00 2346 2200 28215 9790 85.7 1.621
-18.0 84 61.50 2408 2317 30093 10153 87.2 1.579
-16.0 86 63.00 2470 2438 32100 10508 88.7 1.539
-14.0 88 64.50 2532 2563 34244 10854 90.1 1.499
-12.0 90 66.00 2595 2692 36536 11188 91.5 1.459
-10.0 92 67.50 2659 2825 38989 11510 92.7 1.416
-08.0 94 69.00 2722 2961 41614 11818 93.9 1.372
-06.0 96 70.50 2786 3101 44428 12109 95.0 1.330
-04.0 98 72.00 2849 3245 47445 12383 95.9 1.289
-02.0 100 73.50 2913 3392 50683 12638 96.8 1.250
+00.0 102 75.00 2977 3542 54162 12872 97.6 1.212 ! Near Maximum !
+02.0 104 76.50 3041 3695 57901 13084 98.3 1.175 ! Near Maximum !
+04.0 106 78.00 3104 3852 61931 13272 98.8 1.140 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 79.50 3168 4011 66274 13436 99.3 1.105 !DANGEROUS LOAD-DO NOT USE!
+08.0 110 81.00 3231 4173 70962 13573 99.6 1.072 !DANGEROUS LOAD-DO NOT USE!
+10.0 112 82.50 3294 4337 76030 13683 99.9 1.040 !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 102 75.00 3136 3932 65939 12676 100.0 1.115 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 75.00 2764 3054 43932 12270 90.2 1.334