It's a hard cast bullet from an NOE mold. NOE calls it the "Thumper". It weighs in at 300 grains with the HP and I am getting 1 hole 5 shot groups at 100 using 52 grain s of WC852F in my current 35 Whelen AI. Have not chronographed the load yet, and I am sure it isn't, but I think it will get the job done.