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Old FN 7x57 ammo.........spliting cases
Several years ago I ordered 7 or 8 of the 100 round boxes of the 7mm mauser ammo Samco was selling. It is tarnished but had little corrosion where the cases touch. All of it for the most part has been sure firing but I get a lot of split cases. Most are right in the middle of the body running length wise. Are these being cause by a large chamber or just old and brittle brass? What has been your experience? This last batch I shot was in a 1912 Chilean SR and I bet 6 out of 10 cases split.