I have a Glock 31 that I love!!! While not quite as accurate as my P229 at 25 yards ( and out ),it is a Laser Beam at 15 yards. I shot it at a GSSF match and beat my best times in every stage ( previously used a 9mm & .40 ). I have also shot it at an IDPA match. A very accurate and reliable gun:
Just picked up a Glock 31 (full size .357 Sig). Took it to the Dept. range to run some ammo through it and I asked the Rangemaster to chronograph muzzle velocity. He used the Dept's Oehler Model 35 at 4 feet from the muzzle (PD standard).
Below is the average velocities of different loads (All are 50 round averages):