Re: .20 Caliber Wildcat
I saw your project posted somewhere else, but can't remember where now. Sounds like a fun one. I ran your numbers of 40's at 4500 and i think you're gonna be lucky to net 400 yds. PBR for it on a 6" target. I always establish PBR for no more than 3/4ths actual tgt. size, which in the case of coyotes would be ~4" or so. Figuring a BC of ~.28 for the various 40's at 4500 my PBR calcs. would be about 350-360 (310 yd. zero @ 4000 ft. elevation). I've seen buddies try to extend their PBR's on coyotes, and they usually end up overshooting them at 200ish yds. or so. Does sound like a great project though.