i now live in az so i would say elk is a possibility if i get drawn i know the 140s are enough for couses deer and antelope. i guess my question is am i limited on killing bigger game with the 7mm at 500yds or farther. i shoot pretty tight groups with it at 400yds now. factory loads are what i use so i can shoot a variety of different loads if the 140s arent heavy enough. i hpoe this makes sense
While I agree with previous posts on needing info on your capability, intended target/game, optics etc, etc... I want to address your choice of bullet and long range shooting.
In 7mm the 140 is about the lightest bullet and has the lowest ballistic coefficient compared to the 150, 162, 169 and 180grain choices. Your 7mm mag can certainly push the 160grain bullets with some decent velocity.
That said, my recommendation to you would be to see if your rifle will shoot accurately a heavier bullet.