Data in a reprint of an 1891 Ideal Handbook

[larryo_1]

Just for info:  The twists listed were:40-65:1:25,45-60:1:25, 45-75: 1:25, 50-951:60.  The alloys listed were 4-60:1:16, the others listed were a 1:16 alloy.  The bores were listed as: 45-60:0.456, 45-75:0.456, 50-95:0.512 and the 0.403.  This stuff was neat so felt it should be passed on.  I am using, now, the alloy listed as 1:16.  Also use 1:20.  Don't seem to notice any difference but that is me and my rifle!  Enjoy.