I have a WWII M1 Garand which so dominates 1st place, I think the discussion should be about 2nd place. In that spot I would put the Enfield Rifle No. 4 MK I. I have the MK 2.
"...from my cold dead hands" Charlton Heston & NRA
"He which hath no stomach to this fight,/ Let him depart." Henry V