Really does depend on the firearm, some guns are just simply not capable of really tight groupings.
For me it is as follows.
S&W 52-2: 1" groups or less at 25 yds. one handed Bullseye style. Very accurate gun but very unforgiving.
S&W 686-6: On average I can easily manage 2-2.5" and smaller groupings at 25 yds, using .38spl full wadcutters. Can get sub 1" with much effort.
Buckmark, ruger & S&W 41 .22 Easily all within 1-2" with effort, add a red dot sight, even easier, single raggedy holes.
Glock 17 2-4" groups depending on the day, taking my time, the glock 17 is a tremendously accurate gun, once used to the trigger, I find it can have advantages for accuracy being kind of squishy.
CZ 85 combat, 2-3" groups with some effort easily.
One of my favourites for last a STi spartan in .45 as delivered by armco.
Easy 2" groups, one of the easiest to shoot, most forgiving guns I ever owned, I could rapid fire it, meaning as soon as I got the sights settled on the center of the target again, I pulled the trigger, less than 1 second between shots, could easily achieve 3-5" groups, it was phenomenal
For me it is as follows.
S&W 52-2: 1" groups or less at 25 yds. one handed Bullseye style. Very accurate gun but very unforgiving.
S&W 686-6: On average I can easily manage 2-2.5" and smaller groupings at 25 yds, using .38spl full wadcutters. Can get sub 1" with much effort.
Buckmark, ruger & S&W 41 .22 Easily all within 1-2" with effort, add a red dot sight, even easier, single raggedy holes.
Glock 17 2-4" groups depending on the day, taking my time, the glock 17 is a tremendously accurate gun, once used to the trigger, I find it can have advantages for accuracy being kind of squishy.
CZ 85 combat, 2-3" groups with some effort easily.
One of my favourites for last a STi spartan in .45 as delivered by armco.
Easy 2" groups, one of the easiest to shoot, most forgiving guns I ever owned, I could rapid fire it, meaning as soon as I got the sights settled on the center of the target again, I pulled the trigger, less than 1 second between shots, could easily achieve 3-5" groups, it was phenomenal