My wife shot 2 Turkey and buck at 9 months pregnant. The boy is now a man at 20 and out shoots me most of the time. Just go slow and enjoy the outdoors and the wonderful company she is to you.
Use what he shoots best. European countries use the 6.5x55 for moose and have over 50 years. The Creed with 140 and the right placement will work. Yes, bigger might be better but a dead elk won't tell the difference.
Similar experience with sst's on my 6.5. Switching to 140 partition this year. Not the tack 0 as the sst or bt but good for the hunt and dependable with its history.
Go for it. Love mine. Get a better scope. There are recoil options with pads, brakes, inserts, etc. Enjoy it. I find good prices on brass at gun shows, etc.
So 270 win. Rem 700. 140 eldx bad groups at 25 yds but turn out the best group at 150 yds. What am i missing? Using Reloader 22. Off a vise limiting shooter error. Double checked. Yep I'm confused. 5x5 shot groups,