the numbers came off the barrels on the rifle it was posted on gunbroker it was from a side view of a picture of the 45 70 that was for sale by a seller and yes it was a remington baikal sxs 45 70 brianj are thier numbers on the side of your 45 70 .i looked up those figures on the net that what i got when computed. please oh great one what is the correct formula for converting those figures nobody answered the first time i asked.