Home Forums Reloading Big Game Rifles H4350 & 165Grn TTSX .300 Win MAg

Or if there is a reason I should not be using H4350 with the heavier bullets

Maybe you heed to read more thoroughly in the OP..You’re the only one who has a problem with it. You got an axe to grind, you need to find somebody else.

If it works with one powder for 150 grain bullets and you want to try out 165 grainers.. of the same type of bullet..

All of us should know, just drop your charge a hair or two, and just work back up..

so you sacrifice 5 or 6 semi spendy bullets.. thats a lot cheaper than sacrificing an eye or worse...

This should be pretty common knowledge for any reload with even a little bit of experience.

Alright guys. Generally when a powder is not listed for a certain bullet, that means it is not optimum. At least when they (Barnes) did their testing. Why not just use a good powder that is listed in the Barnes load data? Here's how I'd approach it:

RL19, RL22, Hunter, and H4831. Probably not in that exact order, but the powders I'd try. The first one I'd likely try is Hunter, with a max charge of 78 grains. That means I'd start at 76 grains, and work up in increments of 1/2 a grain, until I reach 78grains. The OAL will likely have an effect on group size. Barnes suggests .050" off the lands, but I've had good luck at .025" off the lands. Every rifle is different, but that's how I'd go about it. If you have a good rifle, it should put 5 shots into moa or less with one of those loads. Half a box of bullets would be gone, but you'd likely find a load that is very acceptable. The second powder I'd try would be H4831, but more than likely the first one would give me the results I am looking for.

I may be the odd guy out, but I have had incredible good results with H4350 in the 300 Win. My long time hunting partner has used 180 PT, Sierra 180 and Speer 180's since H4350 was introduced and has killed alot of elk with the combo.

Cartridge : .300 Win. Mag.(SAAMI)
Bullet : .308, 165, Barnes 'TTSX'BT 30368
Useable Case Capaci: 79.680 grain H2O = 5.174 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H4350 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.704% 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

-07.0 92 66.00 2878 3034 49794 10752 97.5 1.232
-06.3 93 66.50 2898 3077 50869 10824 97.8 1.220
-05.6 93 67.00 2918 3120 51966 10895 98.0 1.208
-04.9 94 67.50 2938 3163 53085 10963 98.2 1.196
-04.2 95 68.00 2959 3207 54229 11030 98.4 1.184
-03.5 95 68.50 2979 3251 55396 11095 98.5 1.173 ! Near Maximum !
-02.8 96 69.00 2999 3295 56589 11159 98.7 1.162 ! Near Maximum !
-02.1 97 69.50 3019 3339 57806 11220 98.9 1.150 ! Near Maximum !
-01.4 97 70.00 3039 3383 59049 11280 99.0 1.139 ! Near Maximum !
-00.7 98 70.50 3059 3428 60319 11337 99.1 1.128 ! Near Maximum !
+00.0 99 71.00 3079 3473 61616 11392 99.3 1.117 ! Near Maximum !
+00.7 99 71.50 3099 3518 62941 11446 99.4 1.107 ! Near Maximum !
+01.4 100 72.00 3119 3563 64295 11497 99.5 1.096 !DANGEROUS LOAD-DO NOT USE!
+02.1 101 72.50 3138 3609 65677 11546 99.6 1.086 !DANGEROUS LOAD-DO NOT USE!
+02.8 102 73.00 3158 3654 67090 11593 99.7 1.075 !DANGEROUS LOAD-DO NOT USE!
+03.5 102 73.50 3178 3700 68534 11639 99.8 1.065 !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 71.00 3197 3744 71986 11073 100.0 1.044 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 71.00 2915 3113 51368 11222 94.9 1.213



My brother uses H4350 with 200 AB's and gets amazing results in his 1-8 300 Win as well.

So, just as was mentioned, work up with min data and let the get tell you where it wants to be. It may not set speed records, but I'd bet a dollar it will be accurate.

Thanks for all of the info.

Clifford

My brother uses H4350 with 200 AB's and gets amazing results in his 1-8 300 Win as well.

Interesting. Could you elaborate a little more on "amazing results" if you don't mind?

I've been using RL25 forever in a 1:9.5 Krieger with 190SMKs with outstanding results out to 1000 and 1175. But Alliant is getting really hard to find these days locally.....and I really like H4350 in other chamberings.

We skipped the load work with this one and went with Kevin's proof load. It worked well and still does.

👍 Thanks.