I am sure I have it all wrong

I bought a stainless Browning A-bolt BOSS in 1995
Swtiched the BOSS weight for a suppressor
Oh ya, almost forgot, 30-06

to this day shoots 3/4" groups or less with the suppressor (original BOSS System was 1/2")

I use Hornady Superformace 165g that clock at 2880-2900 from a 20" barrel

I live/hunt around 10,000' elev. with that in the equation I am zeroed at 240y, and have 2000lb energy at 400y

I was in a tiny Native Village in AK, the only ammo they had in in stock was [s]30 Remington AR[/s], opps or a I mean 30-06, a quite but priceless Value to the 30-06