Damn how many times must you be told you know schit about shotguns.
Most common screw-in chokes by constriction....least to most.
1. Cylijnder (basically no choke)
2. Skeet
3. Improved
4. Modified
5. Full
6. Extra Full (the tightest choke)
There are a load of others for every shooting niche in the market.I have an aftermarket screw in for a Browning Citori marked "TRAP".Measuring it it falls right between modified and full.....only one I've ever seen.
Whistlebritches wrote: