M1903: Round Will Not Chamber

[Parashooter]

Short-chambered is a possibility with a replacement barrel. Usually a few turns with a finish reamer does the trick.

. . . by the way; what unit Parashooter?

A Company (Abn/Mech), 12th Engineer Bn. - a small unit in cold-war Germany, supporting the 1st Brigade, 8th Infantry Division.