Home Forums Reloading Big Game Rifles 300 Win. Mag. Loads

I am going to work up a load for my 300 Win. mag. using 180 gr. bullets. Which is the best powder H-4831 are H-4350?

Thank You in Advance

IMHO- neither!

80-81 grains of H1000 works better then the powders mentioned. Do a search and find out a LOT of info.

I agree H-1000 is great in the 300 win. The H-4831 would be my choice between the two powders you mentioned

I have had good accuracy(.550) average and speed(3170) average using 180 AB's with IMR 4350 and CCI 250 primers.

I've had excellent results with H-4831sc and 180 grain Barnes X's. It's my out West load for muley/elk.

Accuracy is under an inch with both Partitions and X's and seems unaffected by temperature extremes. This powder has accounted for an awful lot of game over the years.

Elmer- It's not one of the powders you listed, but Rl22 seems to shine in the 300WinMag. 180gr. Protected Point Partiton on top of 75gr clover-leafs in my Model 70--Mike

Elmer:

Your results may vary! I use 180 Hornady Interlocks and Balistic Tips in my 300 Win Mag. 74 grains of R-19 and 76 grs or R-22 worked VERY well producing sub 1" groups and @3150 FPS from a Rem 700 24"bbl.

4350 an 4831 are very different powders in that sized case! 4831 is gonna be your BETTER bet.

Elmer01 -

I've worked up a number of loads using TSX and North Fork 180g bullets. In the process I tried H1000, H4831SC, H4350, Reloder 25 and Retumbo. H4831SC and H4350 both worked very well, as did Re25.

Maybe it's just my rifle, but IMR4350 and H4831 both worked very well. RL22 also works well. My 180 gr load was at a MV of 3140 and shot under an inch consistently. That was with IMR4350. The 168 TSX likes RL22 and goes under an inch as well. 180 gr Partitions like H4831SC.

I wouldn't mind trying H1000 and 7828. Seems like the 300WM is a pretty versatile round - for me anyway, but then so is the old boring 30-06.

A load of 75.5grs. RE22 shoots very well in a friends Sako with 180 Interlocks and 178 AMAXs. Very good is under/around 1/2" @100yds. Depends which bullet we're talking about. J

I know answer what I posted, but get some RL22, Fed primers and you will be making clovers. I will give you the published H4350 loads if you like.

As a rule of thumb, the less powder you can use to achieve the same level of velocity, the better. You'll enjoy longer barrel life, and less recoil as well.

I've been using Reloader 22 in the 300 Win. Mag. more than any other powder for the last 12 years, and it has consistently delivered high velocities with top-notch accuracy across the board. I've used Reloader 22 handloads behind 168 gr. and 180 gr. bullets in the 300 Winchester on a great many big game animals in a number states and several foreign countries over the years, and it has always delivered the goods without a hitch.

The only way to come up with the load that works best in your rifle is to try various powders, and use a chronograph as you work up your loads. Experiment with Reloader 22, H4831, H4350, IMR4831, IMR4350, and H1000 as well. No one can tell you, in advance, as to which powder is going to perform best for you in your rifle.

But getting back to my original point, if you can come up with a load with, say, H4350 that delivers accuracy and velocity that's approximates or is equal to Reloader 22 or H1000, run with it. You'll use significantly less powder per shot, recoil will be less, and barrel life will be enhanced as well.

AD

73.5 grains of RL 22 pushing a 180 grain bullet was my standard load in my 300 Winchester mag. Used it for 15 years until I burned the barrel out. Shot quarter size groups until then. Model 70 Supergrade. Also my my best powder for 300 WSM, 270 Winchester, and 270 WSM times 2.

hunting1
You have a PM

Ramshot Magnum looks promising in my 300WinMag.

allenday-

"As a rule of thumb, the less powder you can use to achieve the same level of velocity, the better. You'll enjoy longer barrel life,..."

Pardon me for semi-hijacking the thread but how can you justify the above statement after reading Ken Howell all these years?

I shall get some popcorn.

FYI for all others, H1000 and RL25 are very close to the same burn rate. They are great in the 300 Win Mag with a 180g bullet. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

I don' know about the powders you asked about or which 180 you are going to shoot. I load 180 Accubonds behind 80.5 grains H1000. It is loaded to sammi specs for lenght. Four diffremt rifles all shot this load well. All under a moa, two Rem., one Winchester and a Savage. My not be the load for your gun but the load kills elk and shoots between 3050 and 3100 fps depending on what gun it is shot out of.

In regards to powder consumption, velocity, and barrel life, champion HP competitor David Tubb has stated pretty much the same exact thing himself in his column in the 'American Rifleman'. I have no idea as to how much actual 300 Win. Mag. experience Dr. Howell has under his belt, and I'll keep my guesses to myself in regards to that. But regardless of any theory to the contrary, I assure you that the less powder you burn in a given cartridge, all other things being equal, the longer your barrel life will be.

Personally, I've fired over 8,000 rounds through various 300 Win. Mags. over the last 12 years, and I've tested just about every powder/bullet combination that you can think of, plus I've used the cartridge on nearly 200 big game animals in something like 20 states and 7 foreign countries. I'm sure that some guys have a lot more 300 Win. Mag. experience than I do, and you may be one of them, but nevertheless, I haven't exactly been sitting idle.

More to the point, ever rifle is a law unto itself. That much I know to be an absolute fact. In my current 300 Win. Mag. (24" bbl.), Reloader 22 provides the best accuracy of any powder I've tried, nearly 3100 fps. with 180 gr. bullets, and extremely consistent chronograph readings. To achieve only 30 fps. more velocity with those same 180 gr. bullets out of my rifle than I get with Reloader 22, I have to burn 5 grs. more powder if I use H1000, plus chronograph readings are far less consistent, accuracy isn't as good, muzzle blast and muzzle flash are more intense, and recoil is heavier as well. That 30 fps. difference in velocity simply isn't worth all of the compromises that are required to realize that petty gain in velocity. Now, if I were a fan of 200 gr. bullets rather than 180s -- and I'm not -- then I'd be more inclined to go with a slower powder.

One of my friends has a 300 Win. Mag. that thrives on 180 gr. Nosler Partitions and H4350. He uses 4 grs. less H4350 than I do Reloader 22 to achieve essentially the same velocity with the same bullets, and muzzle blast and recoil are extremely pleasant. So, in truth he's using 9 grs. less powder than if he were using H1000 to come very close to the same MV. Again, is all of that extra powder worth it? In his case, I don't think so. If H4350 worked as well in my rifle as it does in his, I'd use it myself.

At out rifle club, many of the competitors who shoot the 300 Win. Mag. use H1000 with great results, but most of them have rifles with 26-28" bbls. For 300 Win. Mag. rifles with hunting-length bbls. of 24" or thereabouts, powders with slightly faster burning rates have produced the best over-all results in my experience with bullets of between 150 & 180 grs.

For a few years I had a Remington 700 KS Mountain Rifle in 300 Win. Mag. with a very fast factory-original 24" barrel. That rifle loved IMR4831, Winchester brass, CCI 250 primers, and 180 gr. Hornady Interlocked SPs. For whatever reason, that rifle produced right at 3150 fps. with that load, and with 8 grs. less powder than H1000.

As I said, every rifle is a law unto itself. You can carve that concept into hard rock. In YOUR rifle, H1000 may very well be the very best powder extant, but that won't necessarily apply to everyone else's rifle.

AD

"I assure you that the less powder you burn in a given cartridge, all other things being equal, the longer your barrel life will be."

Thanks for your rational. I think I'll stick with Ken's per the below links:

Link1

Link2

Link3

elmer,

300 Win Mag
180 gr Nosler PT
75.0 grs RL22
W-W case
Federal GM215M primer

Shoots well under MOA from 3 different rifles.

Regards,

JD338