Hi i need some help with quickload for 7.21 firebird (lazzeroni) powder vvn570 and noma 217 bullet 175 accubond Lr bullet .284,175 accubond longrange. cartridge o,a,l 3,600 inch barrel length 28 inch case capasy useful 112gr
I just realized you asked for two powders. Heres the numbers for Norma 217.
USE THIS DATA AT YOUR OWN RISK.Cartridge : 7.21 Firebird (Lazzeroni)
Bullet : .284, 175, Nosler Accubond LR 58517
Useable Case Capaci: 101.272 grain H2O = 6.575 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Norma 217
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.33% 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
-03.3 96 88.00 3098 3729 58713 13385 100.0 1.463 ! Near Maximum !
-03.0 96 88.30 3107 3752 59360 13406 100.0 1.455 ! Near Maximum !
-02.6 96 88.60 3117 3774 60014 13427 100.0 1.448 ! Near Maximum !
-02.3 97 88.90 3126 3797 60675 13447 100.0 1.441 ! Near Maximum !
-02.0 97 89.20 3135 3820 61342 13468 100.0 1.433 ! Near Maximum !
-01.6 97 89.50 3145 3843 62017 13488 100.0 1.426 ! Near Maximum !
-01.3 98 89.80 3154 3865 62699 13509 100.0 1.419 ! Near Maximum !
-01.0 98 90.10 3163 3888 63387 13529 100.0 1.412 ! Near Maximum !
-00.7 98 90.40 3172 3911 64083 13549 100.0 1.405 ! Near Maximum !
-00.3 99 90.70 3182 3934 64786 13569 100.0 1.398 ! Near Maximum !
+00.0 99 91.00 3191 3957 65497 13589 100.0 1.391 ! Near Maximum !
+00.3 99 91.30 3200 3980 66215 13608 100.0 1.384 !DANGEROUS LOAD-DO NOT USE!
+00.7 100 91.60 3209 4003 66940 13628 100.0 1.377 !DANGEROUS LOAD-DO NOT USE!
+01.0 100 91.90 3219 4026 67674 13647 100.0 1.370 !DANGEROUS LOAD-DO NOT USE!
+01.3 100 92.20 3228 4049 68414 13667 100.0 1.363 !DANGEROUS LOAD-DO NOT USE!
+01.6 101 92.50 3237 4072 69163 13686 100.0 1.357 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 99 91.00 3250 4104 72574 13351 100.0 1.331 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 99 91.00 3118 3779 58394 13876 100.0 1.462 ! Near Maximum !
Hi azar i wonder IF you Can help mi again with qickload
For Firebird but with 160 gr accubond and vv570 norma 217
Same data as before
Thanks
Mikael