If you want some interesting videos to watch about .410 shooting, go to UTube and type in Cazza Rizzini TV. go to Videos where he tests all the.410 hulls he could get, patterns all, checks velocity on all and gives a point system to all as far as results. The testing is called .410 Ammo test and he also goes afield after doves and wood pigeons. He only recommends full choke and he has won the .410 Italian Championship in 2018.
Quite impressive and notice his vest Club .410.

David