im not into super duper targeting or competition, but consider a chrono a necessity to set up a gun .. if for no other reason, its critical to know your flight arc to properly sight in the gun for the best kill zone also requiring a ballistics app .. its a game changer vs 'guessing' at a proper sight-in .. its totally wrong without those tools and understanding things trust me .. that said, anything will get the basic job done .. i use a cheap caldwell, its finicky BUT, i only need to set it up once in a blue moon when im changing something on a gun .. if your a target guy with a whole array of assorted fruity flavor pellets and like to play with a 1000$ scope twisting turrets from your lawn chair id get a more substantial chrono ...
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