Thanks sachel.45. I'll get some #4 buck and see how it patterns. Maybe try buffered too depending on the price.
I just don't understand how two slugs made by the same company,and that the only difference I could find was one is 160 fps faster than the other differ in price by $6.00 One is 4.47 a box of 5 rnds., and the other is 10.37 a box of 5 rnds.
The f127ss is a saboted slug that looks very similar to the old BRI slugs. It's used for fully rifled barrels or rifled choke tubes.
The f127rs is a rifled slug not unlike most other foster slugs meant for smooth bore barrels.
Hope this helps.