Turkey loads are viscous, but they vary from 2 3/4 to 3 1/2" shells 20ga. To 10ga. I'd say dead if 20ft away you shoot with 3" 12ga. It also depends on shot placement.
My dad is 100% the reason of my love of firearms and I sincerely love him for that. I grew up on a farm in So IL. and I've sent a LOT of shotguns up to him from this page over the last 10yrs. I've bought some VERY nice guns for him over the years including a L.C. Smith and a Model 42 that...
Here's the article below about the Army choosing the Sig 1-6X for the HK G28 & 417.
https://taskandpurpose.com/military-tech/army-rifle-optic-sig-sauer-contract