Powder Slection

[MOOSE39465]

Hello everyone. Hope your hunting season is going well, and the freezers are getting full. I have a question about different powders for a 300 Win Mag. Currently I am unable to get any Aliant Reloader powder which was my go to powder. Out of the IMR line of powder I can get 4350,4831,and 7828. Which one would be the best choice for now until I am able to get RL22. Thanks Moose

 

[clambdin]

All of those will work, If I had to choose one it would be 7828...If you can get Ramshot magnum it works really well in the 300 win mag also !

 

[el matador]

I'm getting ready to work up some loads for a new .300, and I've decided to start with H1000 based on a lot of good reviews. After that my choices would be H4831, H4350, IMR 4831, IMR 4350. The Alliant stuff supposedly shoots good enough groups but is more temp sensitive than the Hodgdon powders.

 

[SidecarFlip]

be apprised that H1000 is a slow burning powder and to get adequate velocity you might have a case capacity issue.

 

[Mike 338]

Hodgdon Hybrid-100V

You can find it too. My best results with H-1000 have been at highly compressed and over-pressure loads. I like something a little faster burning. Give the Hybrid a try. I think you'll like it.

 

[Dosh]

Moose, go with what works best for you. Settling for a powder you would not consider if your favorite were available seems a waste. On the other hand you may find a better performing-more accurate powder trying something new. Unless you have an upcoming hunt do as many here do and wait for your favorite go-to powder. Good luck

 

[ncfyrfyter]

I have found in my short time of reloading that slower powders in magnum cases usually produce better results. The H1000 would probably be my choice. If you're trying to find something that will closely match your normal load, check a burn rate chart and try something close to what you normally use, then check load data for that powder. Just my .02

 

[PDRENNER]

Of the 173 powders most common in the US the RL-22 is ranked at #154, H4831 is at 152 just a shade faster. The H-4350 is alot faster and ranked at 140, I have had great results with it utilizing the 150 - 165 gr bullets. For the weavy weights, the 180 - 210's the slower burn rates will most likely be your best bet, that puts you with H-4831, or my favorite H-1000 which is rated at 162 in burn rate. Spark the H-1000 with a Fed. 215 Mag Match and you should get very clean burning and I get really good groups with it.

 

[djtjr]

I have found in my short time of reloading that slower powders in magnum cases usually produce better results. The H1000 would probably be my choice. If you're trying to find something that will closely match your normal load, check a burn rate chart and try something close to what you normally use, then check load data for that powder. Just my .02

I agree with this generally but would caveat that it holds true for heavy bullet relative to caliber and not so for lighter bullets.

 

[alaska]

In the 300 Win Mag

H1000 with 180 gr Nosler AB
79.0 in WW cases

Suggest try both Fed 210 Match and Fed 215 Match and see what prints the best for you using both primers. H1000 was made for the 300 Win with heavier bullets like the 220gr Sierra MatchKing for 1000 yard shooting with 77.0 grains @ 3.500" COAL.

Another good load I used for years before H1000 was introduced

IMR 4350 @ 72.0
180 gr Nosler Part
Fed 215Match
WW brass

Reloader 22 with 190gr a very good powder for the 300 Win but it's a double based powder that is hard on the Throat of the rifle. I believe the Military used Reloader 22 in the MK 248 Mod 0 with the 190gr loaded by Federal and H1000 with the 220gr MK in the MK 248 Mod 1 load.

 

[Kennibear]

With Sierra Game King SpBT's

For the 150gr - 75gr of 4350, WW case, Fed #215 primer. MAXIMUM pressure, 3400fps.

For the 200gr - 75gr 7828, WW case, Fed #215 primer. MAXIMUM pressure, 2950fps.

Both tack drivers in son's Rem 700 SPS.

Have not shot 165 - 180 grain bullets as these two loads are the Yin and Yang of it.

 

[MOOSE39465]

Sorry for such a long relay in replying. Thanks to all for the info. I did pick me up some IMR 7828 and loaded 50 rounds for testing. I got some H-1000 and tried to load some 208 Amaxs, but for some reason it would flatten primers and show excessive pressure signs so I bailed on H-1000. I still have about half of a pound left might try them with the 190 Sierras.

 

[Kennibear]

MOOSE39465

You did not mention the amount of H1000 you used or the velocity. It is so success full a powder for most shooters that maybe backing off a little will bring it into a usable load. Also, being a tubular powder, you could try standard primers. H1000 is the darling of the 1000 yard Benchrest crowd so I wouldn't quit just yet.

KB