What powder for a 300 mag Weatherby

James41 · January 22, 2008, 05:17 PM

What is a good powder to use in a 300 mag Weatherby. I will be using a 180 grain mjsp boat tail. I used this bullet way back when i first got the gun and it gave me the best groupings at 100 yards. I think it was aprox 80 grains of powder, but i don't know what powder was used. I am thinking maybe IMR4831, anyone know a better?

indiansummer · January 23, 2008, 11:43 AM

Hodgdon Retumbo or Alliant's RL2
Their websites probably have the data you need

multistage · January 24, 2008, 04:34 AM

RL-25 is another good powder for it. Buddy of mine runs that with a 200 grain Partition.

January 22, 2008, 05:17 PM	#1
James41 Member Join Date: September 29, 2007 Posts: 47	What powder for a 300 mag Weatherby What is a good powder to use in a 300 mag Weatherby. I will be using a 180 grain mjsp boat tail. I used this bullet way back when i first got the gun and it gave me the best groupings at 100 yards. I think it was aprox 80 grains of powder, but i don't know what powder was used. I am thinking maybe IMR4831, anyone know a better?

January 23, 2008, 11:43 AM	#2
indiansummer Junior Member Join Date: January 14, 2008 Posts: 4	Hodgdon Retumbo or Alliant's RL2 Their websites probably have the data you need

January 24, 2008, 04:34 AM	#3
multistage Member Join Date: March 8, 2007 Location: Wyoming Posts: 25	RL-25 is another good powder for it. Buddy of mine runs that with a 200 grain Partition.