I’ve come across a few Remington and Peters boxes that have “CF” and “Central Fire” on their labels but they are obviously rim fires. Does anyone know the story behind this? They seem to be around 1910-15 but I can find no reference to them in the catalogs (so far). The Peters’ box is listed in Dunn as a typo (PCC-4 LR-7), 1913. The REM/UMC is not listed in Dunn. It’s also not in the 1911-12 or 1913-14 Remington catalog as either a rimfire or a center fire. The box lists a 45gr bullet but the catalogs list a 40gr bullet for the .22 extra Long? I have no catalogs for the next few years until 1917 which has basically the same info on the Extra longs.