Search will reveal a lot of threads.
Serious Situation use of any firearm means the gun has to run , the loading being able to feed and extract : Reliable
Next up is being able to shoot POA/POI - Shot Placment
If the gun does not run, it cannot put the projectile(s) where they need to go.
Period.
Makes no difference what the load is, it has to "get there" ...now what it does comes into play.
MiniShells in My testing and the testing of others, are not consistent in pattern, pattern density, and depth of penetration.
So I do not want these shells as for ME these are not efficient on this one point alone.
Win 1300s are the pump guns that "most times" will feed and extract these as far as a repeating shotgun is concerned.
Well , not everyone owns a 1300, so what about other Repeating shotguns?
So I am not going to stake my life on a shell that does not feed and extract.
Another "X" as to why I won't use these.
What good is having a lot more of "The Ammo" in any gun, if if won't feed or extract, and it does not go where it is supposed to, and then is a bad pattern?
Mini shells are great for Older Guns with short chambers, that once in a while get fired to remember someone in Remembrance.
Double Barrel, and Single Shot shotguns using these for showing a kid, new shooter what these are, and getting to shoot one and having the hull for 'Neat Factor".
Yeah, they are cute, neat, and all.
Heck some left over and being used in a Single Shot for pest duty is fine.
2 3/4" shells are all anyone needs for serious use.
These have a proven history of doing so, and no need to re-invent the wheel.