which varmint load would be better for a .243. a 55 grain ballistic silvertip or an 80 grain nosler?
For just killing the yote or saving the hide? If your going to use your .243 as a combo varmint/deer gun, I would go with a good constructed 90-100 gr (the 95 gr Fusion would be good). With practice, you should have no problems inside of 300 yards.
On the other hand, if it's going to be used exclusively for predator/varmints, I'd go with a lighter 55-65 gr V-max/ballistic tip bullet.