powder for 300 win mag

I've been using mag pro powder but seems to be inconsistent, looking at other options just curious on what others are using.

 

If you are shooting 180 and above class bullets, Retumbo and H1000 are excellent powders. I have not shot a .300 Win. in awhile. However, those powders were always good when I did. Others I know who still shoot a .300 Win. Mag. also use those powders. I am quite sure that the new RL powders, like RL-23 and RL-26 should work very well too.

 

In my .300 WM I use either Hybrid 100V or IMR 4350 with my 190's. Awesome with either, velocities are very close. H4831SC on occasion with 190's but with 208's it is outstanding, at least in my rifle.

 

I have loaded Ramshot Hunter with a 175 SMK that shoots good. I will be stepping up to a 208 Amax and trying something else. With all the reloading info on the 3 sites that I frequent there is a lot of different powders that work.

 

Retumbo worked best for me with the 230 grainers, Rl25 is the ticket for me with the 210 grainers and Rl22 worked best for me with the 180 class bullets. I also found H1000 to be very consistent, but for me Rl25 edged it on groups and velocity with the 208-215's.

 

H-4831 is awesome. Here is a pic of a small 7 shot Ladder I did at 330yards. - 72, - 72.5, - 73, - 73.5, - 74, - 74.5 & 75gr. H-4831, 178 A-max, 210M, FGMM brass.


Also really like RL-25 but can't find any in Canada anymore

 

+1 for IMR 4350

 

For 210 and under weight H1000 is great. For heavier use Retumbo. IMR4350 gave me good speed and accuracy for the 190 SMK but for IMR I recommend trying the new IMR7977 Enduron powder. It is about the same place as H1000 on the burn speed chart, has copper fouling eraser technology and is very consistent across temperature changes.

 

I load for a couple of different 300 WM and have found IMR 7828 to do very well with 190's and 208's.

 

thanks for the input i plan on running 185 to 208 grain bullets, it all depends on what is available in the area

 

The couple I have loaded for LOVED RL 22 and the 210's, but that was before RL 23 and the 215/230 hybrid came out. I would think that the new RL23 and the 215 would be a great combo!!

 

for all the 300 wm I load for imr-4350 works great with 168 & 210 bergers. as we have seen in my neck of the woods if gun wont shoot bergers it is out the door and no looking back!

 

+1 for H1000

 

I like H 4831 or H 4831 sc depending on the bullets . Not effeted by temp change. Larry

 

H1000 and fed 215 GM have always worked well in my trg42

 

My top accuracy loads are 73.0 RL 22 and 71.0 H4831sc with 190 Berger VLD and 200 Berger Hybrids, respectively. 0.25 MOA at ease out to 300 yards. About 0.5 MOA at 600 yards.

 

h1000 gets my vote. i even use it in my 338 pushing 300gr bergers out to 2000.

 

RL-25 has been great in mine!

 

Been using H1000 & 208 Amax's with very consisting results very temp stable .2-.4 to 600 yards. Shoot a ladder a few weeks ago with RL33 & Hornady 225 bthp's. Ran 73-81 grains in 1gr incraments to ladder test & to find max. I called 81gr max, but it only had a slightly flattened primer. During this ladder I had two noticeable nodes 75gr & 76gr went in the same hole, then 78gr & 79gr did the same with the 80gr load only about an inch to the right of the other two. I have since returned to the range to test the low node & shot a .246" group with the 225's over 74.8gr RL33. This is a very mild load. I'll be testing the higher node soon. Good luck.

 

Do you think RL33 will give better velocity or is it too slow ?