well you managed to break the two parts on a 1911 that are known to break--just not usually!!-LOL
Just a note of wisdom here from living under the rule of "Murphys Law" for over 60 years.
be prepared!
I always keep and extra firing pin and extractor and recoil spring for a 1911, I always keep an extra recoil spring assembly for any other semi auto psitol,and i always keep a firing pin for any 22 semi auto pistol.
IF you do this you will never have one break.
Everyone has an opinion and heres mine!
i see nothing wrong with your target or projectiles, its not unusual for a paper target thats not backed up with cardboard to have tear out like this especially when shooting round nose, FMJ or hollow point ammo.
the thinner (cheaper) the target the more tear out.
SWC's make nice round holes in paper but look really weird in the magazine.