Irregular velocities with 7prc loads

[Idaho Lefty]

Better than "Most" of, the IMR Powders, but probably, Not as "Good" as some of, the very Best, Hogdon Powders,.. like, H-4831, etc.
You might also Try, working Up loads with, F-215 Magnum Primers and, the StaBall HD.
I Use, a LOT of StaBall 65, in my 6.5 Creed and even Here, in Winter at 20 Degrees Above,. NO, Accuracy, "issues" for Me,.. Yet.
My son will Be Testing his 7PRC Loads, in the Next 2-3 Weeks,. Hopefully ( He's got, 50 Loaded / ready to, Go ).

Ive never used Staball H D how is the temp stability of it?t

 

[Idaho Lefty]

You Might Try calling, the St Mary's, Florida, Olin / Winchester, Powder Plant and Ask,. that Question.

 

[Johrichal]

speaking of Staball HD Powder valley has it on sale right now for $36 a pound with free hazmat shipping today only. They also have the 180 ELD m's on sale for $31/100

 

[Johrichal]

what part of Idaho are you from?

 

[Idaho Lefty]

The Boise / Meridian,.. area and I Shoot Out, in the Desert towards Mountain Home, when It's Above 20 Degrees and the Wind is Below, 4-5 MPH,.
In fact, I'm Heading Out soon to, Shoot my 6.5 Creed ( Check Zero @ 200 Yds ) and Play with my Marlin .30-30 On, Steel Plates.

 

[Johrichal]

ok just curious my folks have a place in Idaho but a bit north of you they are below cour de alene

 

[Idaho Lefty]

Cour-da-elene is, a Pretty Spot and a Lot of Retired folks live there.
I still Had to Work, back when moving to, Boise 33 years ago and that's was Where, the Job's / Money was, then.
As i got ready to Leave to go Shoot, the Wind kicked Up to, 7 to 12 MPH ( the Wind Chill is, Way Down there ! )
But, I have More info from my son on, the 7 PRC.
He is also trying, RamShot, Grand, Powder ( in Case the HD doesn't shoot, up to,. "expectations" ).
He got 2,950 FPS with it and with, safe looking pressures,.. hogdon has data.
Another powder you might try is, vhitavouri, n-570