MemberJanuary 9, 2018 at 12:51 pm1 Bullseye
As you know all rifles will react a little different to different ammo. That said my Dad just bought a new 708 and had great 100 yard accuracy with Hornady Whitetail 139g (.5 inches at 100 yards from lead sled 5 shot group). I shot it from sand bags with the same ammo and hit .75 inches at 100 yard. So i would say the rifle liked this ammo. If you are not reloading, fire forming brass doesn't matter so pick up 2-4 boxes of different flavors of ammo and fire a 3 shot group from each and go with the one that seems to like your rifle most. In two different calibers I have had amazing luck with Hornady Precision Hunter ammo using the new ELD-X bullets. I have had good luck with Winchester XP ammo too in a 3006, so really my point is try different ammo in your T3, sorry I can't be of more help. Good luck.
2506 comment….I reload and this load is a winner in my T3 (.5 inches at 100 yards/1 inch at 200 yards/1.5 inches at 300 yards)…next up 400 yard test after I buy some more bullets.
IMR 4350 48.5g
115 Nosler BT