Here's what's achievable if you've got a No4 receiver knocking around - a DeLisle Mk4 (T) (Actually an LEI Delisle MkIII that I project-ed with a repro No 32 scope) - Good out to 100 yrds so far, and need to try it out to 200 once we are allowed human markers in the butts at Bisley once again. (.45 ACP too slow for the electronic targets...)