I built a 270-08AI about two years age for a light carry rifle on a short '70 action. Basically it duplicates the 270 Win. in a smaller package.
Forming brass is a simple matter of running 308 Win cases in a 7mm-08 sizer and then in the 270-08 die and fireforming them. I had a few minor problems going down to 27 on one pass.
Powders in the 4350 range seem to work best with 130 grain bullets. I just started loading some Varget with good inital results. Velocites range right around the 2800-3000 mark with 130s.

Mark Pinkston at Kailua Custom barreled mine. He was a great help with info,dies,etc.

Bill

how's about trying a 260 Rem necked up, I think that would work just a fine.?

Have a super day

Dogz

with the 260 and 708 available, i would question going through the excercise...

.264 .277 .284

and the 708 has about a ZILLION different bullets to choose from

jeffe

The reason for the 270-0AI was a simple one, I have at least one of the other factory offerings in 6,6.5 and 7 versions based on the 308 round. I just like something different and the 270 seemed like a good choice at the time. My thought was to build a 27 bore on a light short action rifle that would duplicate the ballistics of the 270 Win with 130 grain bullets which it does with 8-10 grains less powder. The bullet choice was always based on a 130, so availblity of other weights wasn't considered. If the sitution arises where I need a heavier/lighter bullet, I simply grab another rifle.

Why did I use 308 brass instead of 260,708 and etc? Simple. I have a good supply of virgin 308 brass.

Would I suggest someone building one? Not really. The question was asked and I replied with some info if someone was interested putting one together. Building a custom dosen't alway depend on logic! Its just something I may want even if it dosen't make sense to someone else. The usual question at the club is what weird thing I'm shoot'n today.

Take care ya all !!!!
Bill

sounds good to me, cattin isn't always about what makes sense, at least it hasn't been to me. But I do enjoy the heck out of it! And that is what a lot of this is all about.

"get to the hill"

Dogz

I would like to know a little about the performance and what is needed to make brass.

it's in ackley's book.. more or less matches TODAYS loads of the 270

708 brass or 243

jeffe

I've got a 270/08. I really like to use it. RDT Barrel on a sako action. 130gn speer projectiles or barnes 130 gn triple shock

sounds good. now get on the phone and get the 257-08 a factory chambering.