I thought I had a suitable load for my 6x.284. 53 grains of IMR 4831 with a 95 grain Nosler BT worked pretty good. Unfortunately I developed the load when it was about 40-50 dgrees farenheit ourside and now that it's 80 degrees plus, I'm blowing primers and having other major pressure signs with this load. If I reduce it, it won't shoot. What powders has anyone out there had success with in this caliber with the heavier bullets. H-414 is the only other powder I've tried in this gun and it's a loser.

Migra

you might want to try 5010.It worked well in my 25/06 IMP. I doubt if can over load it at any temperature even at full compression and it is super cheap.

Using it in a .243 with a 100 gr.bulk psp from Mid South produced a 12 shot group just less than an inch at 50 yds. The velocity was over 2400fps.You just can't get enough of it in that case size.

The .284 cases would be a very different story. roger

Migra --- You may want to try a slower powder for the 6/284. The load you mention is my load for the 85 grain weight 6mm's. H1000, or possible R25 may fill it out better. Good lck with your awesome hotrod rifle!

Well, I do not have a 6mmX284 to play with any more, but when I did H 450 was a great powder in that rifle.

Unfortunately, that powder is no longer available.

I would be tempted to try RL 22 and, or RL 25 with the heavier bullet weights.

Am I hearing right that I need to go to a slower burning powder? I thought 4831 was pretty slow. I guess I need to get me head out of the sand and see what's available.

I too no longer have a 6x284, but I was loading 56.8grs of H1000 behind an 87gr v-max. Out of my 30 inch barrel, 5 shots at an average of 3505fps.

I have heard that H4350 is the powder to use for velocity, but I could never get the stuff to shoot accurately in my rifle. H1000 delivered 1/4 inch groups at 100 yards and the spread of velocity between shots was only about 8fps.

I tried H4831 but found it dirty and inconsistent.

You may also want to try Reloader 22, as I hear good things about that powder in the 6x284.

Regards,

Michael.

Give IMR7828ssc a try. A bit slower than RL22, just the thing for heavier bullets in smaller bores.

VV N 560 would also be worth a try. I understand that it will be available in one pound cans some time this year instead of the 2 pound cans of the past. It's a clean burning and very consistent powder which produced the best accuracy with heavy bullets in my 6.5. Quality control is so tight with VihtaVuori powders that you don't have to redevelop your load data when going to a new powder lot...Rusty.

I have found that RL-22 is the best for my particular 700 based 6/284. Best all around powder for accuracy and velocity. Hope you like youe 6mm/284----I sure do mine. Too bad i gotta sell it!

Aloha, Mark