I use Sierra 150s not so much because I think the spire point deign buys me anything in performance but really only because that's what my friend Billy Doss (now deceased) had on hand for me to use in making him some ammo long ago when he got that little .30-30 with the mannlicher stock that is now mine. I loaded him up 100 rounds for it using the bullet he had on hand and am still shooting them up. I don't believe he lived long enough to ever fire the rifle after I loaded the ammo for him.
Most likely when I finish up that 100 I'll use whatever I have on hand next time again.