I believe that Dovetail Chopper lump is the correct terminology for the 21. Winchester of course did not invent it as it had been previously used on the British BSA guns. Several models of the earlier J Sevens Arms & Tool Co guns had Chopper Lumps but not dovetail chopper lumps. Either is totally different than the ordinary plain Dovetail Lump.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra