Since you're going with a new design I'd look at the 6.5 Bee RPM case, and shorten it as needed.
Much like a stretched 284 case, that should have as much or more capacity as the 280 AI.
.473" rim and .500" case head, so the magazine modifications should be minimal.
One of my bucket list/unicorn rifles was a Ross M1910 in 280 Ross. They were only made from 1910 to 1916 and the 280 Ross nearly delivered 7mm Remington when fired in a 30" barrel. I snagged a beautiful 4 digit S/N first year production rifle in outstanding condition inside and out and the...
Looking for QL data for the 45-70 using the 350 gr. Barnes TSX FB loaded to 2.800" and a MAP of 31000psi
IMR 3031 would be my first choice, but have a good selection of powder to choose from.
Mine prefers 190 gr. LRAB and RL-17.
Superformance does deliver the claimed speeds with 15o and 165 g. bullets, but not at the accuracy level I was looking for.
I have some Stayball6.5, but haven't yet tried it in my WSM.
You guys and your RL-26 & Superformance! 😁
I've got at least 12 pounds of H4350 to burn through before I switch 30-06 powders. (y)
Great results you're posting though.
If you have a stash of H4350, you're in good shape.
My old 22" Ruger 30-06 thrives on 180 gr. NBT and...
The good news; we will be flying home via London. Never been there before, never been anywhere but Canada and Mexico. She has been Everywhere except Antarctica. She has friends who are still with the State Department in London. Planning a whirl wind tour of London during our 8 hour layover. Oh...
I get weary of the airline games. They jack your flight schedule around until it no longer meets your need, then offer to be generous by allowing you to re-book your flight at a higher price. About the same ethics as a loan shark.
I got some primers from the 60's is a collection of reloading equipment. I wasn't going to risk using them for reloading, but they found a use fireforming cases using the Cream of Wheat method. 99% or so fired on the first try and most of the others responded to a second strike.
My 280 Ackley is a beanfield rifle wearing a 28" 8 twist PacNor barrel. The long barrel helps digest slow burning powders and so I can get 3200 fps with 140NAB and 3000 with 160NAB and sub-MOA accuracy at 400 yds. if I do my part. For the most part I use Fed 210M primers in my loads except when...