For 1000yd BR started with a 36 Weaver. Actually a very reliable scope I still have it and use it testing new rifles
12X42NF BR for 1000yd LT. gun
5.5 X 22 BR for 1000yd HG
60X March for short range score shooting and 600 yd BR
All great scopes.
Both NF scopes really got a workout as my son shared them in 1000y matches by shooting a different relay. Lotsa "clicking" never a problem.
Lefty