7mm Mag and What powder
- Thread starter mildot
- Start date
- Nov 4, 2004
- 24,924
- 7,829
Start with RL22 and the 160 gr AB.
JD338
JD338
- Oct 30, 2004
- 24,190
- 2,841
h1000 works well also with the 160 gr. Around 70 gr or so.
- Thread starter
- #8
- Thread starter
- #10
I have a couple of reloading books and they vary on loads by upto 3-4gr's
even when you go the powders website that i have noticed on some loads to vary aswell....
I know the old addage of start low and work up, which is what i will do untill i get the most accurate combination. but with thing like quick load they seem to be prety accurate with regards to velocity etc which also helps when trying to work out rough drops etc.
even when you go the powders website that i have noticed on some loads to vary aswell....
I know the old addage of start low and work up, which is what i will do untill i get the most accurate combination. but with thing like quick load they seem to be prety accurate with regards to velocity etc which also helps when trying to work out rough drops etc.
mildot":g0dlwix2 said:
Of course, different reloading books vary on their recommendations. They were shot from different rifles/barrels. However, if its recent data (within about the last 10 years) in those books, all have been well pressure tested.
QuickLoad is just a programers scientific wild a$$ guess. For your safety, start somewhere in the middle of the most recent "valid" data you can find. Good luck.
ETA: See the discussion below, start at the top of the thread:
http://www.24hourcampfire.com/ubbthread ... #Post19188
- Thread starter
- #12
rick smith
Handloader
- Apr 6, 2005
- 1,249
- 0
I have gotten better results with IMR-7828.Rick.
- Oct 30, 2004
- 24,190
- 2,841
mildot":3kiziapi said:
Cartridge : 7 mm Rem. Mag.
Bullet : .284, 160, Nosler AccuBond 54932
Cartridge O.A.L. L6: 3.290 inch or 83.57 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Alliant Reloder-22
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 77 52.00 2421 2082 29534 9566 91.9 1.720
-18.0 79 53.30 2481 2187 31514 9865 93.1 1.677
-16.0 81 54.60 2541 2295 33628 10154 94.3 1.634
-14.0 83 55.90 2602 2405 35886 10430 95.3 1.593
-12.0 85 57.20 2662 2517 38299 10692 96.2 1.548
-10.0 87 58.50 2722 2632 40877 10939 97.1 1.501
-08.0 89 59.80 2782 2749 43603 11171 97.8 1.457
-06.0 91 61.10 2841 2868 46487 11385 98.4 1.414
-04.0 93 62.40 2901 2989 49557 11580 99.0 1.372
-02.0 95 63.70 2960 3112 52826 11757 99.4 1.333
+00.0 97 65.00 3018 3236 56309 11913 99.7 1.294 ! Near Maximum !
+02.0 98 66.30 3076 3362 60022 12048 99.9 1.257 ! Near Maximum !
+04.0 100 67.60 3134 3490 63983 12161 100.0 1.222 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 68.90 3191 3618 68210 12254 100.0 1.187 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 70.20 3248 3748 72727 12342 100.0 1.154 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 71.50 3304 3879 77556 12427 100.0 1.122 !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 97 65.00 3149 3522 67857 11484 100.0 1.196 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 97 65.00 2831 2847 45073 11790 95.2 1.424
- Thread starter
- #15
I am using RL-25 in 26 inch barrel (stainless) on pre 64 action. 67 grains gives me 3085 fps with both the 160 grain Acubond and North Fork HP. 68 grains gives me a bit over 3,100 fps. I have standardized on the 67 grain load. Probably not as accurate as RL-22 but a bit more velocity.
Andy
Andy
