I’ve been playing with E-Tips in my other calibers. I’m happy to say that my coyote rifle loves them. I have an AR-15 that I built from bare upper and lower receivers specifically for this purpose. It has a 24” bull barrel in 223 Wylde with 1:8 twist that’s putting them inside .5” at 100 yards, and less than 1.5” at 200 yards. The freebore of the Wylde chamber seems to be custom fit for the E-Tip bullets. With a 28 grain maximum charge(work up VERY slowly), and OAL straight from the Nosler manual it shoots perfectly. No pressure signs, primers look great, perfect feeding and extraction, great accuracy with Lake City brass, Remington 7 1/2 primers, and CFE 223 powder. Also by the trajectory of the ejected case it’s not overgassed at all with a rifle length gas system. I haven’t run them over my chrono yet but I’m a very happy camper here! Yotes beware!!!