11mm ammo, trying to identify
Local gun shop brought in a bunch of things from an estate. He called to say he had a bunch of 8x56R that I had been wanting. Going through the box there were several boxes that looked similar to the M1895 Steyr ammo boxes except bigger. Same odd shape. Most were unopened sealed in 1888. Found one open and inside was brass cartridges on stripper clip similar to the M1895. Bullets appear to be paper patched Lead. Rough measurement is 0.430" on the outside of the cardboard box it said 10.3 then 11mm and something in german I couldn't make out. Cases were head stamped 1886 but the box said 1888.
I was thinking 11mm Mauser but they were tube fed. Any thoughts on what rifle this ammo may go into?
Thanks in advance