7mm08 velocity

[Michael C. Smith]

140g Partition 40.5 grains of imr 4895. Savage m11 trophy hunter. 20 inch barrel. Chronograph ten ft. From the muzzel. Only shot one that's all the time I had. Shot was 2693fps.

This is were the load came from. Using fed 210 primers.

was hoping for some more speed I am still .5 off of book max as you can see. I also have varget and imr 4064 powders. Looking at the brass I don't see any psi sights and bolt lift was normal. Do you think another grain would be safe? Is there a better powder of the other two that I have to try. Was hoping for at least 2800fps.

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[SJB358]

I think you are fine, the case looks good and if you report no others problems, I'd be inclined to try them. Seeing as you have a little shorter barrel, I'd deduct 30'ish FPS (for every inch of barrel loss) for the shorter barrel working up to the speed Nosler reports in their book. I doubt your going to run into trouble.

Here is what VARGET looks like

Cartridge : 7 mm-08 Rem.
Bullet : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 48.679 grain H2O = 3.161 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : Hodgdon VARGET

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.137% 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

-11.4 90 39.00 2493 1932 44118 9490 96.0 1.160
-10.2 91 39.50 2523 1979 45677 9614 96.4 1.141
-09.1 92 40.00 2553 2026 47289 9735 96.8 1.123
-08.0 93 40.50 2583 2074 48958 9852 97.2 1.105
-06.8 94 41.00 2613 2122 50684 9966 97.6 1.087
-05.7 96 41.50 2643 2171 52470 10076 97.9 1.070
-04.5 97 42.00 2672 2220 54320 10182 98.2 1.053 ! Near Maximum !
-03.4 98 42.50 2702 2270 56234 10285 98.5 1.037 ! Near Maximum !
-02.3 99 43.00 2732 2320 58217 10383 98.8 1.020 ! Near Maximum !
-01.1 100 43.50 2761 2370 60270 10476 99.0 1.005 ! Near Maximum !
+00.0 101 44.00 2791 2421 62398 10565 99.2 0.989 !DANGEROUS LOAD-DO NOT USE!
+01.1 102 44.50 2820 2473 64602 10650 99.4 0.974 !DANGEROUS LOAD-DO NOT USE!
+02.3 104 45.00 2850 2524 66887 10730 99.6 0.959 !DANGEROUS LOAD-DO NOT USE!
+03.4 105 45.50 2879 2577 69256 10805 99.7 0.944 !DANGEROUS LOAD-DO NOT USE!
+04.5 106 46.00 2908 2629 71713 10875 99.8 0.930 !DANGEROUS LOAD-DO NOT USE!
+05.7 107 46.50 2937 2682 74262 10940 99.9 0.916 !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 44.00 2896 2608 72840 10287 100.0 0.926 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 44.00 2645 2174 52120 10396 94.8 1.071



IMR4064

Cartridge : 7 mm-08 Rem.
Bullet : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 48.679 grain H2O = 3.161 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : IMR 4064

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.191% 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

-11.9 87 37.00 2407 1801 40085 9049 95.1 1.220
-10.7 88 37.50 2438 1847 41535 9178 95.5 1.200
-09.5 90 38.00 2468 1894 43036 9304 96.0 1.180
-08.3 91 38.50 2498 1941 44588 9427 96.4 1.160
-07.1 92 39.00 2529 1988 46195 9546 96.9 1.141
-06.0 93 39.50 2559 2036 47857 9662 97.2 1.122
-04.8 94 40.00 2589 2084 49578 9774 97.6 1.104
-03.6 96 40.50 2620 2133 51360 9882 98.0 1.086
-02.4 97 41.00 2650 2183 53204 9985 98.3 1.068 ! Near Maximum !
-01.2 98 41.50 2680 2233 55114 10085 98.6 1.051 ! Near Maximum !
+00.0 99 42.00 2710 2283 57093 10180 98.8 1.034 ! Near Maximum !
+01.2 100 42.50 2740 2333 59142 10270 99.0 1.018 ! Near Maximum !
+02.4 101 43.00 2770 2384 61266 10356 99.3 1.002 ! Near Maximum !
+03.6 103 43.50 2799 2436 63467 10437 99.4 0.986 !DANGEROUS LOAD-DO NOT USE!
+04.8 104 44.00 2829 2488 65748 10513 99.6 0.970 !DANGEROUS LOAD-DO NOT USE!
+06.0 105 44.50 2858 2540 68114 10584 99.7 0.955 !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 99 42.00 2819 2470 66862 9934 100.0 0.966 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 42.00 2561 2039 47497 9969 93.9 1.123


And IMR4895

Cartridge : 7 mm-08 Rem.
Bullet : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 48.679 grain H2O = 3.161 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : IMR 4895

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.137% 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

-11.4 87 39.00 2535 1998 43865 10061 96.8 1.173
-10.2 88 39.50 2566 2047 45444 10186 97.2 1.154
-09.1 89 40.00 2597 2096 47076 10307 97.6 1.134
-08.0 90 40.50 2628 2146 48765 10423 97.9 1.116
-06.8 91 41.00 2658 2197 50513 10535 98.3 1.098
-05.7 92 41.50 2689 2248 52321 10642 98.6 1.080
-04.5 94 42.00 2719 2299 54193 10745 98.8 1.062 ! Near Maximum !
-03.4 95 42.50 2750 2351 56130 10842 99.1 1.045 ! Near Maximum !
-02.3 96 43.00 2780 2403 58135 10935 99.3 1.029 ! Near Maximum !
-01.1 97 43.50 2810 2455 60212 11023 99.5 1.012 ! Near Maximum !
+00.0 98 44.00 2841 2508 62362 11105 99.6 0.996 !DANGEROUS LOAD-DO NOT USE!
+01.1 99 44.50 2871 2562 64590 11181 99.8 0.980 !DANGEROUS LOAD-DO NOT USE!
+02.3 100 45.00 2901 2615 66897 11253 99.9 0.965 !DANGEROUS LOAD-DO NOT USE!
+03.4 101 45.50 2930 2669 69289 11318 99.9 0.950 !DANGEROUS LOAD-DO NOT USE!
+04.5 102 46.00 2960 2724 71768 11378 100.0 0.935 !DANGEROUS LOAD-DO NOT USE!
+05.7 104 46.50 2990 2778 74339 11432 100.0 0.921 !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 98 44.00 2951 2707 73867 10715 100.0 0.927 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 98 44.00 2683 2237 51059 11038 95.6 1.088


To me, if IMR4895 shoots well for you, I'd be inclined to try it and see what comes out. The others don't look appreciably better to me.

RL17 may gain you a touch more speed, but if you are looking for 2800, the good old 4895 will get it right...


Cartridge : 7 mm-08 Rem.
Bullet : .284, 140, Nosler PART SP 16325
Useable Case Capaci: 48.679 grain H2O = 3.161 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : Alliant Reloder-17

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.042% 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

-10.4 91 43.00 2538 2002 40319 10726 96.0 1.189
-09.4 92 43.50 2570 2053 41754 10858 96.6 1.170
-08.3 93 44.00 2601 2104 43243 10985 97.0 1.150
-07.3 95 44.50 2633 2156 44791 11107 97.5 1.131
-06.3 96 45.00 2665 2208 46399 11222 97.9 1.113
-05.2 97 45.50 2697 2261 48069 11332 98.2 1.094
-04.2 98 46.00 2728 2314 49806 11435 98.6 1.076
-03.1 99 46.50 2760 2368 51613 11532 98.9 1.059
-02.1 100 47.00 2792 2423 53491 11622 99.2 1.041 ! Near Maximum !
-01.0 101 47.50 2823 2478 55431 11706 99.4 1.024 ! Near Maximum !
+00.0 102 48.00 2855 2534 57482 11782 99.6 1.007 ! Near Maximum !
+01.0 103 48.50 2886 2590 59602 11851 99.7 0.991 ! Near Maximum !
+02.1 104 49.00 2918 2647 61813 11912 99.9 0.975 !DANGEROUS LOAD-DO NOT USE!
+03.1 105 49.50 2949 2704 64115 11966 99.9 0.959 !DANGEROUS LOAD-DO NOT USE!
+04.2 106 50.00 2980 2761 66516 12012 100.0 0.943 !DANGEROUS LOAD-DO NOT USE!
+05.2 107 50.50 3011 2819 69023 12051 100.0 0.928 !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 48.00 2992 2783 70076 11298 100.0 0.929 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 48.00 2657 2195 46591 11576 94.1 1.109

 

[elkeater2]

+1 on what Scotty said. That Nosler data is with a 6" longer barrel. I notice that the QL data for IMR 4895 is very close to your results, and he did run it for a 20" barrel. FWIW, almost every time I have tried to achieve someone's published max velocity, I have ended up backing off a little - and that is in nearly every rifle I own.

EE2

 

[Michael C. Smith]

Ok thanks yall for the help. I will load up some more to shoot across the chrony. The recoil was very mild.

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[pharmseller]

I reload for 4 7mm-08s, all Tikkas, 22 7/16" barrels. I use the Nosler max of 47.5 gr Big Game for 2880 fps. I use Winchester Large Rifle Magnum primers. Find some Big Game and work up.





P

 

[Michael C. Smith]

Ok I will look for some thank you.

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[Tommer23]

I wouldn't stress out over velocity in 7mm-08 with partitions. I have Federal factory loaded partitions that say 2800 fps on the box but chrono at 2650 out of my 20" model Seven. I have recovered 2 bullets from deer and they looked picture perfect. The one on the left was 40 yards and the right one was 140 yards, both quartering towards shots, both found in opposite hind quarter. These were the 2650fps factory loads. Again, I would load for accuracy, not speed with these bullets (most bullets actually).

I am using 48 gr. of H4350 in my reloads for my model seven with partitions and I squeezed 2750fps, but that's a stiff load in my gun. It just so happened to be where I got the best accuracy too.

 

[Michael C. Smith]

They do look good! Just doing some experimenting to see what I can get it to do. You know how us reloaders are haha!

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[TackDriver284]

Case pressure looks just fine to me, just make sure you work up in .3 increments with 3 rounds per increment until you find the accuracy your rifle likes. I done it with Varget ( top across ) and IMR 4064 ( 2nd row across )in my .308 during load work ups until I hit the node for each powder.

Start around the middle between min and max and go up in .3 increments. Good luck shooting and report back soon.

 

[Michael C. Smith]

41.5 grains of 4895 got me 2772 fps. The case still looks good to me. What do yall think?

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[DrMike]

You case looks fine. There is no indication of excess pressure.

 

[Michael C. Smith]

I thought it looked good. Now I need to see if I can get it on paper and see what it looks like. Thank you

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[SJB358]

Looks great. Can't wait to see what it does. Speed looks good as well.

 

[Michael C. Smith]

Looks great. Can't wait to see what it does. Speed looks good as well.

Yep got to see where the accuracy is. Going to try to load up some to shoot on paper tomorrow. Also may step up .3 to 41.8 and see what happens on fps and paper.

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[kraky1]

Seems like a big jump for 1 grain of powder....maybe more shooting will give a more accurate average?

 

[Michael C. Smith]

79 fps was the increase. I will shoot several shots acrostic the chrony when testing again.

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[kraky1]

Actually...my brain fart....79FPS not too surprising. As you shoot for groups you'll get a more accurate average.

 

[TackDriver284]

79 fps was the increase. I will shoot several shots acrostic the chrony when testing again.

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Have you done the 3 round load work ups in .3 increments?

 

[Michael C. Smith]

Not yet going to try to get some loaded tonight if time permits.

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