7mm-08 and IMR4831
- Thread starter MDP
- Start date
- Oct 30, 2004
- 24,184
- 2,823
H or IMR?
- Oct 30, 2004
- 24,184
- 2,823
Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, NOS BalTip 28120
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Hodgdon H4831 SC
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 74 36.00 1833 896 15733 4781 56.2 1.735
-18.0 76 36.90 1877 938 16611 5017 57.7 1.698
-16.0 78 37.80 1919 981 17544 5254 59.0 1.661
-14.0 80 38.70 1962 1026 18535 5498 60.4 1.625
-12.0 81 39.60 2007 1073 19590 5747 61.9 1.590
-10.0 83 40.50 2053 1123 20712 6001 63.4 1.555
-08.0 85 41.40 2100 1175 21905 6260 64.8 1.521
-06.0 87 42.30 2149 1230 23169 6523 66.3 1.487
-04.0 89 43.20 2198 1288 24528 6789 67.8 1.454
-02.0 91 44.10 2249 1348 25970 7058 69.4 1.421
+00.0 92 45.00 2301 1411 27512 7329 70.9 1.389
+02.0 94 45.90 2354 1477 29159 7602 72.4 1.357
+04.0 96 46.80 2409 1546 30918 7876 73.9 1.325
+06.0 98 47.70 2464 1618 32803 8149 75.5 1.294
+08.0 100 48.60 2520 1693 34811 8422 77.0 1.264
+10.0 102 49.50 2578 1771 36984 8693 78.4 1.233
Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, NOS BalTip 28120
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : IMR 4831
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 36.00 2039 1108 18888 6326 74.6 1.613
-18.0 79 36.90 2091 1166 20017 6589 76.1 1.577
-16.0 80 37.80 2145 1226 21217 6853 77.7 1.541
-14.0 82 38.70 2198 1288 22490 7117 79.2 1.506
-12.0 84 39.60 2253 1352 23857 7380 80.7 1.472
-10.0 86 40.50 2308 1419 25309 7641 82.2 1.439
-08.0 88 41.40 2363 1488 26856 7900 83.6 1.406
-06.0 90 42.30 2419 1559 28508 8155 85.0 1.373
-04.0 92 43.20 2475 1633 30271 8405 86.4 1.342
-02.0 94 44.10 2532 1709 32155 8651 87.7 1.311
+00.0 96 45.00 2589 1787 34167 8890 89.0 1.280
+02.0 98 45.90 2647 1867 36320 9122 90.2 1.250
+04.0 100 46.80 2705 1949 38627 9347 91.3 1.215
+06.0 102 47.70 2763 2034 41098 9563 92.4 1.180
+08.0 103 48.60 2821 2121 43749 9768 93.4 1.147
+10.0 105 49.50 2880 2210 46595 9964 94.4 1.114
If you want speed though:
Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, NOS BalTip 28120
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Hodgdon VARGET
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 78 36.80 2477 1635 32853 7773 91.6 1.305
-18.0 80 37.72 2535 1712 34965 8004 92.7 1.273
-16.0 82 38.64 2592 1790 37187 8228 93.7 1.240
-14.0 83 39.56 2650 1870 39542 8444 94.6 1.204
-12.0 85 40.48 2707 1952 42043 8653 95.5 1.171
-10.0 87 41.40 2764 2036 44697 8852 96.3 1.138
-08.0 89 42.32 2821 2120 47515 9041 97.0 1.106
-06.0 91 43.24 2878 2207 50509 9219 97.6 1.075
-04.0 93 44.16 2934 2294 53690 9387 98.2 1.046 ! Near Maximum !
-02.0 95 45.08 2991 2383 57072 9542 98.7 1.018 ! Near Maximum !
+00.0 97 46.00 3047 2473 60670 9686 99.1 0.990 ! Near Maximum !
+02.0 99 46.92 3103 2565 64500 9815 99.5 0.964 !DANGEROUS LOAD-DO NOT USE!
+04.0 101 47.84 3158 2657 68581 9931 99.7 0.939 !DANGEROUS LOAD-DO NOT USE!
+06.0 103 48.76 3213 2751 72934 10033 99.9 0.914 !DANGEROUS LOAD-DO NOT USE!
+08.0 105 49.68 3268 2846 77580 10120 100.0 0.890 !DANGEROUS LOAD-DO NOT USE!
+10.0 107 50.60 3322 2941 82545 10192 100.0 0.867 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Bullet : .284, 120, NOS BalTip 28120
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Hodgdon H4831 SC
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 74 36.00 1833 896 15733 4781 56.2 1.735
-18.0 76 36.90 1877 938 16611 5017 57.7 1.698
-16.0 78 37.80 1919 981 17544 5254 59.0 1.661
-14.0 80 38.70 1962 1026 18535 5498 60.4 1.625
-12.0 81 39.60 2007 1073 19590 5747 61.9 1.590
-10.0 83 40.50 2053 1123 20712 6001 63.4 1.555
-08.0 85 41.40 2100 1175 21905 6260 64.8 1.521
-06.0 87 42.30 2149 1230 23169 6523 66.3 1.487
-04.0 89 43.20 2198 1288 24528 6789 67.8 1.454
-02.0 91 44.10 2249 1348 25970 7058 69.4 1.421
+00.0 92 45.00 2301 1411 27512 7329 70.9 1.389
+02.0 94 45.90 2354 1477 29159 7602 72.4 1.357
+04.0 96 46.80 2409 1546 30918 7876 73.9 1.325
+06.0 98 47.70 2464 1618 32803 8149 75.5 1.294
+08.0 100 48.60 2520 1693 34811 8422 77.0 1.264
+10.0 102 49.50 2578 1771 36984 8693 78.4 1.233
Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, NOS BalTip 28120
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : IMR 4831
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 36.00 2039 1108 18888 6326 74.6 1.613
-18.0 79 36.90 2091 1166 20017 6589 76.1 1.577
-16.0 80 37.80 2145 1226 21217 6853 77.7 1.541
-14.0 82 38.70 2198 1288 22490 7117 79.2 1.506
-12.0 84 39.60 2253 1352 23857 7380 80.7 1.472
-10.0 86 40.50 2308 1419 25309 7641 82.2 1.439
-08.0 88 41.40 2363 1488 26856 7900 83.6 1.406
-06.0 90 42.30 2419 1559 28508 8155 85.0 1.373
-04.0 92 43.20 2475 1633 30271 8405 86.4 1.342
-02.0 94 44.10 2532 1709 32155 8651 87.7 1.311
+00.0 96 45.00 2589 1787 34167 8890 89.0 1.280
+02.0 98 45.90 2647 1867 36320 9122 90.2 1.250
+04.0 100 46.80 2705 1949 38627 9347 91.3 1.215
+06.0 102 47.70 2763 2034 41098 9563 92.4 1.180
+08.0 103 48.60 2821 2121 43749 9768 93.4 1.147
+10.0 105 49.50 2880 2210 46595 9964 94.4 1.114
If you want speed though:
Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, NOS BalTip 28120
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Hodgdon VARGET
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 78 36.80 2477 1635 32853 7773 91.6 1.305
-18.0 80 37.72 2535 1712 34965 8004 92.7 1.273
-16.0 82 38.64 2592 1790 37187 8228 93.7 1.240
-14.0 83 39.56 2650 1870 39542 8444 94.6 1.204
-12.0 85 40.48 2707 1952 42043 8653 95.5 1.171
-10.0 87 41.40 2764 2036 44697 8852 96.3 1.138
-08.0 89 42.32 2821 2120 47515 9041 97.0 1.106
-06.0 91 43.24 2878 2207 50509 9219 97.6 1.075
-04.0 93 44.16 2934 2294 53690 9387 98.2 1.046 ! Near Maximum !
-02.0 95 45.08 2991 2383 57072 9542 98.7 1.018 ! Near Maximum !
+00.0 97 46.00 3047 2473 60670 9686 99.1 0.990 ! Near Maximum !
+02.0 99 46.92 3103 2565 64500 9815 99.5 0.964 !DANGEROUS LOAD-DO NOT USE!
+04.0 101 47.84 3158 2657 68581 9931 99.7 0.939 !DANGEROUS LOAD-DO NOT USE!
+06.0 103 48.76 3213 2751 72934 10033 99.9 0.914 !DANGEROUS LOAD-DO NOT USE!
+08.0 105 49.68 3268 2846 77580 10120 100.0 0.890 !DANGEROUS LOAD-DO NOT USE!
+10.0 107 50.60 3322 2941 82545 10192 100.0 0.867 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Charlie-NY
Handloader
- Mar 11, 2005
- 1,410
- 809
I have always found H414 to produce the highest velocities in the 7mm-08. Oddly enough, it doesn't seem to matter whether you load light or heavy bullets, H414 is usually capable of producing the highest velocities.
Although many powders work well in the 7mm-08, H4350 is my favorite for a good balance between accuracy and velocity with a 140gr bullet.
Although many powders work well in the 7mm-08, H4350 is my favorite for a good balance between accuracy and velocity with a 140gr bullet.
YoteSmoker
Handloader
- Oct 3, 2006
- 1,602
- 0
I have only used IMR 4350 in 7mm-08. 46 grains combined with a 140 ballistic tip or AccuBond with WLR primers has produced 3/4" groups or better in 3 different rifles of the same caliber. Velocity averaged 2850 fps out of 28" TC Pro Hunter barrel.
- Oct 30, 2004
- 24,184
- 2,823
I have usually used Win 760 (similar to H414) , rl19, and 4350 series in the stubby 7.
- Thread starter
- #7
Thanks for the replies. I have been testing various powders( Varget, W748, W760, IMR4350 and IMR 4320) with 120gr bal Tips and 120 triple shocks with not so good results. Best group with any of these powders was 1.25" @ 100yds. The best group has been with the IMR 4831, 120 Bal Tip, CCI Mag primer. This combination gave 5/8" group @ 100yds.
Trying to stay with the lighter bullets because the gun is my dads and he is looking for the lighter recoil due to shoulder problems.
Trying to stay with the lighter bullets because the gun is my dads and he is looking for the lighter recoil due to shoulder problems.
- Oct 30, 2004
- 24,184
- 2,823
What rifle?
YoteSmoker
Handloader
- Oct 3, 2006
- 1,602
- 0
4064 or 4895 may work good with 120s??
- Oct 30, 2004
- 24,184
- 2,823
VARGET ROCKS THEM AT 3100 FPS
- Thread starter
- #11
G
Guest
Guest
MDP
I've had great accuracy in my 7-08 with H4895. I can't find the targets at the monent but both 120 BT and 140 BT's were well under 1/2 moa for three rounds. It's a thin barreled mountain rifle so after 3 rounds the groups open up, but it's a huntin stick so I'm happy with 3 round groups.
As YoteSmoker suggested 4064 might be a good choice also.
I've had great accuracy in my 7-08 with H4895. I can't find the targets at the monent but both 120 BT and 140 BT's were well under 1/2 moa for three rounds. It's a thin barreled mountain rifle so after 3 rounds the groups open up, but it's a huntin stick so I'm happy with 3 round groups.
As YoteSmoker suggested 4064 might be a good choice also.
- Thread starter
- #13
G
Guest
Guest
H4895 w/140 BT 38.5 grains w/Fed210m & Winchester brass
H4895 w/120 BT 40.8 grains w/Fed210m & Winchester brass
The OAL I run as long as I can get and still function at mag lenght, this varies per rifle. As always, these loads work well in MY rifle. Always start low and work up slowly!!
Rick
H4895 w/120 BT 40.8 grains w/Fed210m & Winchester brass
The OAL I run as long as I can get and still function at mag lenght, this varies per rifle. As always, these loads work well in MY rifle. Always start low and work up slowly!!
Rick
I am using 43.0 grains of IMR 4064, a 120 grain Nosler Ballistic Tip, and a CCI BR primer. The "book" speed is 3050, although I've never chrono'd it out of my short barrelled Model 7 Remington. The recoil is virtually non-existent. I can shoot deer and watch them fall over thru the scope of this short, lite barreled little rifle.... I love it!!! Plus I can shoot 1/2 inch groups all day long. It's my favorite load, I won't even shoot a 140 gr bullet out of that gun anymore. And it DOES kill deer. Never more than one shot; and a long blood trail is about 20 yds, most are simply "bang, flop" kills.
Powerstroke
Handloader
- Feb 24, 2006
- 1,792
- 33
MDP,
Any luck yet with a combo ? I have to ask, have you tried a different primer? why the use of the mag primers? * just curious more than anything *
My M700 shoots under a half inch all day....Varmit barrel though too.
48.0gr of IMR-4350 and 120gr B-tips and CCI BR primers are my combo.
good luck and keep us informed on what you find.
Any luck yet with a combo ? I have to ask, have you tried a different primer? why the use of the mag primers? * just curious more than anything *
My M700 shoots under a half inch all day....Varmit barrel though too.
48.0gr of IMR-4350 and 120gr B-tips and CCI BR primers are my combo.
good luck and keep us informed on what you find.
- Thread starter
- #17
Powerstroke, Thanks fo the reply. I did try different primers with not so good results. Tried WLR, WLRM, and CCIM with the CCIM giving the best groups. The only two loads that I have found that group well so far has been with IMR 4831 powder, CCIM primers and 120 TSX or 120 BT. I really did not want to use 4831 in this cal but it is the only powder that I can get to group well. Tried Varget, IMR 4350, IMR 4320, Win 748, Win 760 with no success.
