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Joined: May 2005
Posts: 31
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: May 2005
Posts: 31 |
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
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Joined: Jun 2009
Posts: 1,697
Campfire Regular
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Campfire Regular
Joined: Jun 2009
Posts: 1,697 |
USE THIS DATA AT YOUR OWN RISK.Cartridge : 7.21 Firebird (Lazzeroni)
Bullet : .284, 175, Nosler Accubond LR 58517 G7
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 : Vihtavuori N570
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.434% 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
-04.3 90 88.20 3124 3793 56359 15080 99.7 1.468
-03.9 90 88.60 3138 3828 57181 15121 99.7 1.458 ! Near Maximum !
-03.5 90 89.00 3153 3862 58015 15161 99.8 1.448 ! Near Maximum !
-03.0 91 89.40 3167 3897 58861 15198 99.8 1.438 ! Near Maximum !
-02.6 91 89.80 3181 3932 59718 15235 99.9 1.429 ! Near Maximum !
-02.2 92 90.20 3195 3967 60588 15269 99.9 1.419 ! Near Maximum !
-01.7 92 90.60 3209 4002 61469 15302 99.9 1.410 ! Near Maximum !
-01.3 92 91.00 3223 4037 62363 15334 100.0 1.400 ! Near Maximum !
-00.9 93 91.40 3237 4072 63270 15363 100.0 1.391 ! Near Maximum !
-00.4 93 91.80 3251 4107 64190 15391 100.0 1.381 ! Near Maximum !
+00.0 94 92.20 3265 4142 65122 15417 100.0 1.372 ! Near Maximum !
+00.4 94 92.60 3279 4177 66068 15442 100.0 1.363 !DANGEROUS LOAD-DO NOT USE!
+00.9 94 93.00 3293 4213 67027 15467 100.0 1.354 !DANGEROUS LOAD-DO NOT USE!
+01.3 95 93.40 3306 4248 68000 15492 100.0 1.345 !DANGEROUS LOAD-DO NOT USE!
+01.7 95 93.80 3320 4283 68987 15516 100.0 1.336 !DANGEROUS LOAD-DO NOT USE!
+02.2 96 94.20 3334 4319 69988 15541 100.0 1.327 !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 94 92.20 3342 4340 72042 15091 100.0 1.312 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 94 92.20 3170 3904 58252 15633 99.2 1.442 ! Near Maximum !
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.” ― Patrick Rothfuss, The Wise Man's Fear
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Joined: May 2005
Posts: 31
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: May 2005
Posts: 31 |
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Joined: Jun 2009
Posts: 1,697
Campfire Regular
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Campfire Regular
Joined: Jun 2009
Posts: 1,697 |
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 !
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.” ― Patrick Rothfuss, The Wise Man's Fear
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Joined: May 2005
Posts: 31
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: May 2005
Posts: 31 |
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
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Joined: Jun 2009
Posts: 1,697
Campfire Regular
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Campfire Regular
Joined: Jun 2009
Posts: 1,697 |
USE THIS DATA AT YOUR OWN RISK.Cartridge : 7.21 Firebird (Lazzeroni)
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 102.463 grain H2O = 6.653 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 0.213% 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
-02.1 99 91.80 3258 3771 61074 13637 100.0 1.385 ! Near Maximum !
-01.9 99 92.00 3265 3786 61521 13649 100.0 1.380 ! Near Maximum !
-01.7 99 92.20 3271 3801 61971 13661 100.0 1.376 ! Near Maximum !
-01.5 99 92.40 3277 3816 62425 13673 100.0 1.371 ! Near Maximum !
-01.3 100 92.60 3284 3831 62881 13685 100.0 1.367 ! Near Maximum !
-01.1 100 92.80 3290 3846 63341 13697 100.0 1.362 ! Near Maximum !
-00.9 100 93.00 3297 3861 63804 13709 100.0 1.358 ! Near Maximum !
-00.6 100 93.20 3303 3877 64271 13721 100.0 1.353 ! Near Maximum !
-00.4 100 93.40 3310 3892 64740 13733 100.0 1.349 ! Near Maximum !
-00.2 101 93.60 3316 3907 65213 13745 100.0 1.344 ! Near Maximum !
+00.0 101 93.80 3322 3922 65689 13757 100.0 1.340 ! Near Maximum !
+00.2 101 94.00 3329 3937 66169 13768 100.0 1.335 !DANGEROUS LOAD-DO NOT USE!
+00.4 101 94.20 3335 3952 66652 13780 100.0 1.331 !DANGEROUS LOAD-DO NOT USE!
+00.6 101 94.40 3342 3967 67138 13792 100.0 1.326 !DANGEROUS LOAD-DO NOT USE!
+00.9 102 94.60 3348 3982 67628 13803 100.0 1.322 !DANGEROUS LOAD-DO NOT USE!
+01.1 102 94.80 3354 3997 68121 13815 100.0 1.318 !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 101 93.80 3387 4077 72976 13505 100.0 1.280 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 101 93.80 3242 3734 58399 14061 100.0 1.410 ! Near Maximum ! Cartridge : 7.21 Firebird (Lazzeroni)
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 102.463 grain H2O = 6.653 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 28.0 inch = 711.2 mm
Powder : Vihtavuori N570
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.21% 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
-02.1 93 93.10 3323 3924 61029 15446 99.7 1.365 ! Near Maximum !
-01.9 94 93.30 3331 3941 61471 15464 99.7 1.360 ! Near Maximum !
-01.7 94 93.50 3338 3958 61916 15481 99.8 1.356 ! Near Maximum !
-01.5 94 93.70 3345 3975 62364 15499 99.8 1.351 ! Near Maximum !
-01.3 94 93.90 3352 3993 62815 15516 99.8 1.347 ! Near Maximum !
-01.1 94 94.10 3360 4010 63269 15532 99.8 1.342 ! Near Maximum !
-00.8 95 94.30 3367 4028 63726 15548 99.9 1.338 ! Near Maximum !
-00.6 95 94.50 3374 4045 64187 15564 99.9 1.333 ! Near Maximum !
-00.4 95 94.70 3381 4062 64651 15579 99.9 1.329 ! Near Maximum !
-00.2 95 94.90 3389 4080 65118 15594 99.9 1.324 ! Near Maximum !
+00.0 95 95.10 3396 4097 65589 15608 99.9 1.320 ! Near Maximum !
+00.2 96 95.30 3403 4115 66063 15622 99.9 1.316 !DANGEROUS LOAD-DO NOT USE!
+00.4 96 95.50 3410 4132 66541 15636 100.0 1.311 !DANGEROUS LOAD-DO NOT USE!
+00.6 96 95.70 3418 4150 67021 15649 100.0 1.307 !DANGEROUS LOAD-DO NOT USE!
+00.8 96 95.90 3425 4167 67506 15662 100.0 1.303 !DANGEROUS LOAD-DO NOT USE!
+01.1 96 96.10 3432 4185 67993 15674 100.0 1.298 !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 95 95.10 3481 4305 72707 15279 100.0 1.261 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 95 95.10 3292 3850 58541 15743 98.7 1.388 ! Near Maximum !
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.” ― Patrick Rothfuss, The Wise Man's Fear
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Joined: May 2005
Posts: 31
Campfire Greenhorn
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OP
Campfire Greenhorn
Joined: May 2005
Posts: 31 |
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