I have a couple of 1/7 twist guns, had a 1/8 and have a 1/9. I shoot 50 grain American Eagle hollow points in all, my favorite 1/7 Colt light weight chrome lined barrel shoots them into an inch at 100. Not match grade accuracy but it works for coyotes and everything else I've tried.
The 1/8 was a Kreiger and it shot the WW white box 45 grain ammo around 1/2" so I wouldn't worry about twist rate. Get a good barrel in 1/7 and go kill stuff.
I can also reccomend the 77 gr SMK's for coyotes but only if you ain't saving fur...
