Do you have to shoot a non leaded bullet by law?
No...the reason I'm thinking of the GMX is because of the high velocity 3350 fps at the muzzle. At close shots at deer I want a bullet that will smash through both shoulders, yet have a reasonable b.c. for the 350 yard shots (less wind drift and less drop).
Your working at this to hard, 100 gr. SGK will solve both problems, it's just not as sexy a GMX, and it's 1/2 the price. Rio7
I use the 90 grain Sierra Tipped Game King in another rifle at 3120 fps and it's been superb so far. I doubt if the 90 TGK will hold up at 3350 fps. I have some 100 gn SGK and they clock 3200 fps, but surprisingly don't group as tight as the 90 grain Swift Scirocco's. My second choice if the 90 grain GMX doesn't work on dogs too well is the 100 grain Sierra Tipped GameKing which has a b.c. of .515. But I would prefer a stout 90 grain for the very flat short to medium range trajectory. My barrel has a 9 twist, and I would need an 8 twist for the GMX and 100 grain TGK. That is why I'm asking about the 90 grain GMX on dogs...I'd rather have a good idea that they will work ok on dogs before I re-barrel.