280 spl?

A friend of mine has a barrel from an August Pachmayr take down 03 Springfield rifle marked 280 SPL. Has anyone heard of this ?
Thanks
Bob

Could the following be an explanation:

Sam3

SAM
This is a prewar barrel so it would be before the 280 Remington.
Bob

How about:

.280R Lancaster Flanged (7 x66)
.280 Ross (7 x66) Rimless
.280 Jeffery Nitro

Sam3

Obviously a wildcat, case length, case style; necked?, rimless? & so on would be a help.

Time to get out the Cerrosafe and do a chamber casting…

Looks like necked rimless. I’ll have to see i think he is going to do a chamber cast.
I will post if I find out more.
Bob

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