Buckshot pattern choice with ammo selection.

[RMc]

Most defensive shotguns are cylinder bore. These can deliver extremely different pattern results depending on buckshot load selection as this video illustrates:

Read More

 

[Member 34319]

With the current panic buy, I'll take whatever I can get!

 

[Andy54Hawken]

Yep shot pattern matters.

With that said...
If you really want to know just what shot loading works best from your gun....
You need to shoot and pattern your gun.
Otherwise you only have a rough idea based on someone else's gun and how it patterns when they shoot with a particular loading.
Andy