284win Model 99 140 TSX or 139gr GMX?

Hilltop

Veteran member
Feb 25, 2014
3,847
2,230
Eastern Nebraska
Both bullets are great from what I have seen. The GMX claims to leave less fouling since it uses gilding metal instead of copper. Not sure if this is true or measurable? I would figure out which one shoots better in your rifle and let that be the deciding factor.