My cousin has had AR’s in some odd calibers starting with the 223 WSSM and working his way up to the 25 WSSM and some designs on that case and others that were AI’d.

But he also got down to the 204 Ruger and 17 Remington. His first 17 had a real slow twist and would shoot 20’s real well but 25’s were a no go. He traded it back for a faster twist 17 and it works good even with the 30’s but he can’t get those anymore.

Out of all the calibers he tried (mostly for coyotes) he now has 223AI’s and his cat gun is the 17 Remington.

Personally I prefer the 204 Ruger but if you like the 17, it works good in an AR.