300 win mag fps increase

baconeater20

Well-Known Member
Joined
Oct 7, 2012
Messages
417
Location
Mamou, Louisiana
I am loading 300 Win mag with 77.1 grains of H1000 @ 2870 FPS shooting a 200 Grain Berger Hybrid. It is grouping 5 shot groups at 110 yards .611" and 440 yards 2.5". I would like a little more velocity so what would be a powder to use? Also had my personal best Tuesday with 3 out of 4 hits at 900 yards on a 12" plate. Group of the hits was about 7.25". Longest previous best was 675 Yards. Still got a long way to go though.
 
You're going to be trading problems. Rl 22, 25, 26 and retumbo will all likely get you more speed. But the RL powders aren't as temp stable as H1000. And I've never had any success with retumbo with regards to accuracy.
 
I am loading 300 Win mag with 77.1 grains of H1000 @ 2870 FPS shooting a 200 Grain Berger Hybrid. It is grouping 5 shot groups at 110 yards .611" and 440 yards 2.5". I would like a little more velocity so what would be a powder to use? Also had my personal best Tuesday with 3 out of 4 hits at 900 yards on a 12" plate. Group of the hits was about 7.25". Longest previous best was 675 Yards. Still got a long way to go though.
How long is the barrel? How many rounds through it?
 
You're going to be trading problems. Rl 22, 25, 26 and retumbo will all likely get you more speed. But the RL powders aren't as temp stable as H1000. And I've never had any success with retumbo with regards to accuracy.

I haven't found this with Retumbo. The 300 WM I most recently worked a load up for is getting es less than 10, and shooting .5 MOA so far out to 800. I believe (don't have my notes with me) I'm getting ~2890 with a 24" barrel with that load pushing a 210 Berger VLD. Overall, with the 300 WM, it's hard to beat H1000 though IMO.
 
I am loading 300 Win mag with 77.1 grains of H1000 @ 2870 FPS shooting a 200 Grain Berger Hybrid. It is grouping 5 shot groups at 110 yards .611" and 440 yards 2.5". I would like a little more velocity so what would be a powder to use? Also had my personal best Tuesday with 3 out of 4 hits at 900 yards on a 12" plate. Group of the hits was about 7.25". Longest previous best was 675 Yards. Still got a long way to go though.
I am shooting the 215 hybird with 77.5 of H-1000 and getting 2958 for speed that sound very low for that bullet
 
Your barrel might still speed up if it only has a 100 rounds through it. I'm right at 3000 fps out of a 26" Brux with H1000 and a 215 Berger. I agree with others, leave it the way it is if it's shooting good. No need for 100 or 150 fps more if it's shooting good.
 
Warning! This thread is more than 5 years ago old.
It's likely that no further discussion is required, in which case we recommend starting a new thread. If however you feel your response is required you can still do so.

Similar threads

Top