300 win mag

[caster456]

whats the best powder to use when loading a 180g bullet in a 300 win mag?


C

 

[blargon]

H1000, H4350, IMR 4350, IMR 4831, H4831. Start with any of these, and go from there.

 

[Hank Hunter]

all of the above plus RL22

 

[benchgrinder]

Recently tried some AA 3100 and liked it a lot with 180gr. However, I have also tried all of the above listed powders with 300 Win Mag with success, especially RL22.

 

[jwk]

I use 70.4GR of H-4831SC with a 180GR Nosler Ballistic tip.I also use a fed large rifle mag primer but watch the pressure and don't try that max load with the mag primer.

 

[JasonYuke]

Mine likes H 4350, but have also used H 4831 SC, and RL-22 with success

 

[p-17]

Classic loads are 73 grains of IMR 4831 with a 180, or 75.5 grains of Reloder 22. For decades, the standard load was 76 grains of H4831 with a 180, but newer lots of H4831 are a bit faster, so you have to work up carefully and you will likely max out before you reach 76 grains.

Another classic is 69 grains of IMR 4350 -- a proven Wimbledon Cup winning load at 1,000 yards with a Sierra Matchking.

These days, I'm using 77.5 grains of Vihtavuori N560. It gives fantastic results (highest velocities and best accuracy) out of my rifle with Nosler 180-grain Accubond, but the powder is expensive, and you have to work up to this level very carefully.

 

[Jarlath]

IMR 4831 gets a double thumbs up from me.

 

[joe-nwt]

IMR 4831 gets a double thumbs up from me.

I concur. Usually very easy to make an accurate load with this powder.

 

[martinbns]

I have had the best results with reloder 22.

 

[blacksmithden]

I went to the range this weekend with a bunch loaded with 7828 SSC
My best groups using a Speer 180 grain spitzer were with 68 to 69 grains.
I'm shooting a cheapy 200 Stevens bolt action by the way.