I have just had too many failures on game with them and I always used the thickest jackets. They are simply an old fashion bullet that uses soft copper and tapered jackets, they work some of the time and so did the old factory bullets we used to use, but I have had an awfull lot of Hawks turn inside out in a 7x57, 338 Win and in my 416 Rem. I quit using them altogether for hunting.

That said they do seem to work better in slow moving big bores like some of the double rifles and the 45-70, 45-90 etc....and that said why anyone would pick them over a Woodleigh that will work everytime is beyond me unless you are just looking for a cheap bullet to shoot for practice...