Accuracy rate for any particular model of firearm depends on the design and the shooter. The design is excellent. However, due to the double action trigger pull it will take some getting used to. As for the shooter...practice, practice, practice makes a precise and accurate shooter.
Squeeze don't pull
300-600
Couple of hundred meters
25-50m depending on the exact firearm involved.
Glock is a brand. 9mm is a caliber size. So, there is no difference between a 9mm glock and a 9mm of another brand as far as caliber size.
It depends on the model, but most handguns are meant for short to medium range conflict.
At least a half mile.
Go to a gunsmith.
some shoot far and some dont so they all dont shoot the same length
A Glock 9mm can shoot accurately up to about 50 yards for most shooters under ideal conditions. However, effective range for practical purposes, such as self-defense or law enforcement scenarios, is typically considered to be around 25 yards. Beyond this distance, accuracy can diminish significantly due to factors like shooter skill, environmental conditions, and bullet drop. For precision shooting, distances of around 15 to 25 yards are often optimal.
When in doubt have a qualified gunsmith examine your Marlin model 21 shotgun.It is far cheaper to have it examined,then to loose your eye sight or worse.
Very far
Airsoft GI www.airsoftgi.com