358 Win 200 Hornady SP IMR4198

SJB358

Ballistician
Dec 24, 2006
32,341
2,873
I was digging around and found about 20 of these 358 Wins I had loaded with 41 grains of IMR4198 under the 200 grain Hornady SPs.



I cant remember what the heck I loaded them for but man they shot.

I adjusted my scope and shot another group.



Well I didn’t realize the old Burris was 1/2 MOA…. Shot the group on the bottom. Adjusted and came back up.

If one of you kind gentlemen would run QL for me On this load I‘D appreciate it.

41 grains of IMR4198 and a 200 Hornady SP seated to 2.710 shot outta a 20” barrel. I’d be interested to see what QL says. I reformatted my computer and and can’t find my QL disk!
 
Cartridge : .358 Win.
Bullet : .358, 200, Hornady SPSP 3510
Useable Case Capaci: 49.009 grain H2O = 3.182 cm³
Cartridge O.A.L. L6: 2.780 inch = 70.61 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : IMR 4198

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0 91 36.90 2307 2363 41742 5847 99.4 1.127
-09.0 92 37.31 2328 2407 42952 5893 99.5 1.113
-08.0 93 37.72 2349 2451 44194 5938 99.7 1.099
-07.0 94 38.13 2370 2495 45470 5980 99.8 1.086
-06.0 95 38.54 2391 2539 46783 6021 99.8 1.072
-05.0 96 38.95 2412 2583 48133 6059 99.9 1.059
-04.0 97 39.36 2433 2628 49519 6095 100.0 1.046
-03.0 98 39.77 2453 2673 50945 6129 100.0 1.033 ! Near Maximum !
-02.0 99 40.18 2474 2718 52412 6162 100.0 1.021 ! Near Maximum !
-01.0 100 40.59 2494 2763 53920 6192 100.0 1.009 ! Near Maximum !
+00.0 101 41.00 2515 2808 55470 6222 100.0 0.997 ! Near Maximum !
+01.0 102 41.41 2535 2853 57065 6252 100.0 0.985 ! Near Maximum !
+02.0 103 41.82 2555 2899 58697 6282 100.0 0.973 !DANGEROUS LOAD-DO NOT USE!
+03.0 104 42.23 2575 2944 60394 6311 100.0 0.962 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 42.64 2595 2990 62133 6340 100.0 0.951 !DANGEROUS LOAD-DO NOT USE!
+05.0 106 43.05 2615 3036 63922 6368 100.0 0.940 !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 41.00 2586 2970 64968 5980 100.0 0.941 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 41.00 2406 2571 46478 6398 98.3 1.071

Yeah, that load will hunt. Not much in NA that can stand up to that punch.
 
Great deer load you have there. I’ll bet that little rifle is dream to carry in the woods. Light, short, and fast handling. Whitetails beware.
 
Thanks Mike, seeing as it looks to be about 2500 I might just load up a pile of them. Thank you.

Joe, I used it a lot when I first got it. It is really handy and just a good feeling deer rifle.
 
I love the 358 Win. Can't see myself moving too far from that cartridge. I've had great success with 200 grain pills, settling frequently on the 200 grain TSX. I do have a large number of 200 grain FTX that need to be loaded and used.
 
Good stuff! 2500 will handle everything you'd need it to out to reasonable ranges with that cartridge. You should've put a note on that old box of ammo stating, "this load works." Ha. Wouldn't change a thing on that one.
 
First, I don’t know what I was thinking. A 358 Win is awesome on MUCH more than just deer. I feel like I severely undervalued the prowess of your rifle. I still say it would be a true joy to carry.

Second, I have a good quantity of 4198 in both H and IMR flavors that I load in my 45-70’s. After looking at some load info, I was surprised at how versatile the 4198’s are. It’s a powder that works in many different cartridges. I had only looked at it as a 45-70 powder.
 
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