I purchased a large quantity of Barnes 95 gr. TTSX bullets from a commercial loaded years ago for use in my 6.8 SPC, only to find out they wouldn't cycle when loaded with AA2200 (the optimum powder). Then a couple weeks ago I stumbled onto a Remington M700 270 with a matte finish and wood...
The old Reminton Powerlokt HP had thin plated jackets and deliver excellent accuracy in my rifles. Tried them in a fast twist 223 and they would come apart before traveling 100 yards, but they were devistating when fired fired from a 10 twist barrel.
It was crafted by Larry Brace from the Eugene, who passed away about 10 years ago.
Larry was one of the founding members of the American Custom Gunmakers Guild ACGG and from this rifle it's easy to see why.
The action is Husqvarna and the caliber is 7x57mm
Much appreciated. It somewhat comforting to know that your simulations pretty well match up with those I did.
The accuracy node in my rifle seems to be between 15.5 and 16.0, so it's time to more closely explore that region.
I'm a believer that there isn't a free lunch so to say, and that higher than expected velocities come with higher than expected pressures.
I worked up the the Hodgdon maximum load and the accuracy was improving as the charge weight was increased. At 16 gr. the primers still looked normal, but...
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.
Much appreciated.
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.
My 71 is a Browning with a rifle length barrel. It doesn't get out much since I purchased a Winchester M88 in 358.
The 200 gr. FTX bullet is the bees knees if you need to stretch your shots.
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.
Guy
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If you have a stash of H4350, you're in good shape.
My old 22" Ruger 30-06 thrives on 180 gr. NBT and...
I just joined the M1910 280 Ross club today and checked off one of my bucket list rifles.
Now to find that 375 Ruger brass I stashed away for a rainy day...
John