RE: .30 Cal 165 gr Sierra Gamekings
I use em on deer but use varget kicking at 2750fps. They work great. I have hit em in the shoulder with a quartering to me shot and it went all the way thru. Hit em broadside with a massive exit would. I put them in the class of Ballistic tips. Its my favorite bullet for velocitieys under 2850fps.
Can't say I ever had a failure. Never recovered a bullet, and never found any bullet parts in meat. But then again, I have never had a failure on coreloks and ballistic tips either. Haven't hit anything bigger than a 140lb deer with them.
I am rather picky on my shots. I usually only take broadsided shots thru the boiler room.