I have a Remington 788 in .243 that I use for everything from prarie dogs to mule deer. The best group I've recorded for it is a .836" group that was shot with 85 grn Barnes tsx bullets. That is the only sub inch group i've recorded and I'd like to shoot more. I just shot a 1.377 inch with 95 grn SST's from Hornady. Idk how much it would help but who thinks it's worth it?