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Equipment & Gear => Guns and Ammo => Topic started by: h2ofowlr on March 22, 2023, 04:59:31 PM

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Title: .300 Win Mag - Load Data
Post by: h2ofowlr on March 22, 2023, 04:59:31 PM

Trying to find a good powder combination for 150gr & 180gr .300 Win Mag loads.  Does anyone have a good load data they would be willing to share?  I have all the RCBS reloading equipment.  I just haven't reloaded for the .300 Win Mag.  I did pick up two containers of H1000 today.  I saw some use H4350 for the 150gr, but wanted to confirm.  I have two identical .300 Win Mag.  I am going to site one in for 150gr and the other for 180gr.

Title: Re: .300 Win Mag - Load Data
Post by: bobcat on March 22, 2023, 05:28:11 PM

I really like the data that Speer has online, they have data for lots of different powders, and many of the newer ones. Try this link:

https://www.speer.com/reloading/rifle-data.html

Title: Re: .300 Win Mag - Load Data
Post by: TVHunts on March 22, 2023, 06:07:17 PM

Quote from: h2ofowlr on March 22, 2023, 04:59:31 PM

Trying to find a good powder combination for 150gr & 180gr .300 Win Mag loads.  Does anyone have a good load data they would be willing to share?  I have all the RCBS reloading equipment.  I just haven't reloaded for the .300 Win Mag.  I did pick up two containers of H1000 today.  I saw some use H4350 for the 150gr, but wanted to confirm.  I have two identical .300 Win Mag.  I am going to site one in for 150gr and the other for 180gr.

I’ve used IMR-4350 in a 300 WM with very good accuracy with a 180 Gr. Accubond.  I don’t typically chase velocity as much as accuracy myself.  Seating depth and other factors always play a part. 

Good Luck!

Title: Re: .300 Win Mag - Load Data
Post by: 92xj on March 22, 2023, 06:18:06 PM

I run 180 hammers, 73.2 rl23, 215s and get 3150fps.

Title: Re: .300 Win Mag - Load Data
Post by: str8meat on March 22, 2023, 06:40:02 PM

Strictly run H1000 in my win mags 180-210’s.

Title: Re: .300 Win Mag - Load Data
Post by: swanderek on March 22, 2023, 07:58:20 PM

I tried h1000 and switched Ramshot magnum.
Glad I did.
I shoot 180 grain accubonds out of a t3x