Steyr:

Check Double Gun Journal, Volumn 10, Issue 2, (Summer, 1999), Seyfried's "Romancing the Snider". If you don't have access to it, the short answer to your question is yes. He did so, with exactly the load you mentioned (28 grains 4198, a case full of polyester fiber and a 480 grain bullet) and it worked. However, the .577 Snider in question was a Purdey double and since that load produced under 1000 fps instead of the normal 1200 fps, it didn't regulate. He increased the charge, switched to magnum primers and got good results, but decided that he was not comfortable with increasing the 4198 charge that much. He switched to 25 grains IMR 4759, with the same filler and bullet, and got perfect results. The rifle had damascus barrels btw.

Doc:

Mac didn't say that, he was referring to express rifles specifically, which the Snider is not. Your point is well taken though. Blazing such trails is risky and isn't for nimrods. Best to leave it to folks like Seyfried. Unfortunately, even after the experimentation has been done and the results published, there are always the 10% that don't get the word, like those who shoot homogenous solids in double rifles.

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