Yup, I won't dump a running deer much past 600... that's not that long... As I stated I too have used most of the brands in the 50+ riles I've owned... as to some sort of informal match... I'd probably bring a pistol of some sort to even things up... The savage pistol I have is getting a barrel soon that ought to be 1/2 moa to 1,000 (already have the spare barrel sitting on my safe next to a shot out 7rum barrel)... I just need to shoot out the current 22-250 barrel and re-barrel.
The o.p. was looking for brass and his favorite brands were out; I simply offered a couple of choices I'd seen while looking for 405 Winchester brass ( the world seems to be out of that one)…