I agree more info on what is NOT happening or happening causing jams
DID you CLEAN gun before trying it and oiling as required?
as that alone can be an issue
some guns come from the factory with excessive dirt or OIL/Grease
and IF
if your shooing LOW velocity rounds THAT can be the issue too., even if different brands(seen many AR's have issue with Steel cases rounds too, or just lacquered coated cases for that matter)