
.308 20 inch
Any ammo recommendations for whitetail? I’m sure there’s a lot of recommendations. I guess a part of this post is just showing off my rifle. Thanks in advance

Any ammo recommendations for whitetail? I’m sure there’s a lot of recommendations. I guess a part of this post is just showing off my rifle. Thanks in advance
Recently decided to pull my Tikka out of the safe and get out to 1k. I pulled off the 1/2moa 1k challenge. I'm just getting back into 1k shooting and it did take me 9 shots to land a hit, 3 of which hit low on the gong post. This is a build I did over 10 years ago, my NF is stamped 2011.
I have a 6.5 creedmoor T3X lite (pre factory threading) that I'm planning on having cut to 20" and threaded for a suppressor. Since there's not enough diameter to cut 5/8x24 threads, I was thinking of having it cut 1/2x28. Will that be too thin to securely hold a suppressor? Or do I need to plan on doing something else, such as a barrel swap? Thanks for your time!