OK, let's take the .376 steyr through the wildcat line up. What are these called or easily compared to in case capacity and performance? I could see a .338 or even .308.

6.5mm
7mm
.308
8mm
.338
.358
.366
.416
.458

with the exception of the 45 (can't work .011 total headspace)
all the rest have been done.. even to the point of a couple years ago, you could buy the reamers on midway...

remember, the steyr is a shortened x64!!

jeffe

Here are a couple of cartridges that the Steyr factory sent me way back when. They were considering a line of cartridges. I would like an 8 mm (8X60 Steyr).

I saw a .300/.376 Steyr on John Ricks' workbench a few years ago when I visited him.

jim

I have an encore by OTT in .338, w/ a wearthby type shoulder. It's case capacity almost exactly the same (perhaps just a hair larger) than the .300 SUAM: 335 OTTR. 200 gr bullets at 2500+ out of a 13.5" barrel, but still working up loads.

The 6.5 Steyr would be a ringer for the 6.5-284 assuming 3.1" COL like 6.5 Norma. You'd get more powder with the smaller bulelts, but that case with 140's from a 25"bbl is about as close to perfection as I can imagine. The short x64 would have the advantage of less rebate however.
If you're into levers and heavy-for-cal bullets, I see a whole line of rimless Barnes-type rounds for the new Marlins. A 35 cal shooting 280g casts at 2150fps from a necked-down Steyr trimmed to 284W length, 24" oct bbl, full mag -oooh... aaah.
With a forarm and barrel swap you could make a number of these for the same gun (or just bbl swap if you don't mind same contour.) Wonder what a 6.5 Barnes would do with a 160g RN @45kpsi?

BB,
the 284 case is the same capacity as a 30-06, necked to whatever caliber (about 66 or so)

the steyr is about 81-83...

that's nearly 23% larger case...

no relationship

jeffe