I’m new to the 6.5CM as well (T3x SL) and have chosen 129gr Hornady Interlock in a hand load as my chosen bullet for exactly the purpose you describe. Hornady sells this bullet in their Whitetail Classic ammo I believe - if you can find any.
I’d trust other opinions first but after my first 75 rounds downrange between 100 & 300 yards I’m shooting well under MOA with a super old school (but really great) bullet.
Last edited by PintsofCraft; 04/27/21.
