As Drew noted the 1913 Lefever Arms Co catalog did list those 3 dram/28 grs Infallible or Baliste with 1 oz shot loads. They did recommend 1 1/8 oz loads for 12ga guns weighing less than 7 lbs as I recall.
Does anyone here know the difference between Infallible & Unique. I have read in the past they were identical. Prior to about 1950 in looking at old loading manuals one sees only Infallible listed for use in shotshells with Unique showing for pistols & reduced rifle loads. After this time Unique begins to show in the manuals for shotshells in virtually the same loads as the Infallible had shown. When obturating OP wads came into general use loads were reduced & again with cases such as the compression formed ones etc.
