Tighter. I have patterned "spreader" Cutts tubes in .410, 20, and 12. In .410 I got the same patterns I see with my pre-64 M42s choked mod. In 20s the Cutts patterns approximated those I get from .008 to .010 (IC to WS2) barrels. In the 12 its pretty close to what I get from .008 WS1s or IC.

Sam