Almost out of H 870

[Bbear]

I ran some H870 in my 264 WM but didn't like how the temps effected it. Tried 7828 and RL26 and couldn't find a load that worked well for me.
I tried a pound of RL33 and found what I was looking for; Good speed (142gr LRAB @ 3200+) and great accuracy - .4 groups.
Might give that a try as it's suppose to be in the same burn rate area as 870 and the others.

Another one to think of is 7977. Burn rate right around H1000.

 

[sealer]

Everyone has given me a lot to think about.
Thanks all, Dennis

 

[tbrice23]

I ran some H870 in my 264 WM but didn't like how the temps effected it. Tried 7828 and RL26 and couldn't find a load that worked well for me.
I tried a pound of RL33 and found what I was looking for; Good speed (142gr LRAB @ 3200+) and great accuracy - .4 groups.
Might give that a try as it's suppose to be in the same burn rate area as 870 and the others.

Another one to think of is 7977. Burn rate right around H1000.

I just bought a pound of rl33 to try with 143eldx and 140vld in my 264wm. I needed to lose some air space in the case. Retumbo is actually too fast burning for my particular barrel. I loaded up from 69 to 71.5 gr and im at 90+ % case density.
I am going to do testing tomorrow.
There's no published load data, but I did some searches. Do you have any recommendations for me?

Also I have NOT been able to use magnum primers successfully in this barrel without over pressure, I hope 210M will be suitable for cold weather. ???

 

[Bbear]

I had low pressure/over pressure signs below 73 grains in my rifle (mod 70 sporter). Ran loads up to 78 grains before pressure signs started again. Backed off to 75.5 in the Rem & Win brass. The Nosler brass with WLRM primers and the 142 LRAB likes 76 grains.

 

[tbrice23]

I had low pressure/over pressure signs below 73 grains in my rifle (mod 70 sporter). Ran loads up to 78 grains before pressure signs started again. Backed off to 75.5 in the Rem & Win brass. The Nosler brass with WLRM primers and the 142 LRAB likes 76 grains.

Well, my staring load 69.6 gr produced a .396 moa 4 shot group at 200 yards. Primers are still round and faint bolt lift but no over-pressure.
The next load 70.2 gr gave very heavy bolt lift and leaky and flat primers.
I'll dump the rest and work back up from 59.9.

 

[Bbear]

I'm guessing bullet selection may have something to do with our differences? Maybe barrels as well.