My 1956 (grandad's rifle) Win M88 is twisted 1-12" and has always shown an affinity for 150 gr slugs. It shot factory 180 into about 2-1/2", and I shot 180's from it 'cause heavy slugs were a family tradition.
In my late teens I started reading and fooling with rifles a bit and tried factory 150's. Three shot clustes were close to 1" and typically 5 would go into about 1.5". I also felt like the 150's kicked less, which made sense according to Newton.
The old gal is mostly retired now.