I have a Benelli R-1 in 270 WSM and I shot one box of Winchester factory 150 grain ammo through it. It shot about "modified choke".
I was appalled at the size of the pattern. It was fully 7" across and 6” tall at 100 yds.
I started testing hand loads in it and found that most would do about 3 MOA. However I found a sweet spot with a 160 grain Nosler bullet, and 66 grains of H1000. That load holds just over MOA with 4 shots. (Capacity of the gun when fully loaded)
It’s not an MOA gun, but it’s fully capable of being a good all around hunting rifle with that load. Deer and elk are big enough that I can get by easily with 1-1/4” accuracy.