To give you a reference point.
On 19 May 1942, SIG tested five contemporaneous service handguns for accuracy in preparation for the development of their candidate for the next Swiss service sidearm, eventually adopted as the Pistole 49 and designated commercially as the P210. This is what they got in 8 shots fired at 50 meters:
* Walther P38: 12.0cm from rest/14.5 cm offhand
* Radom ViS35: 18.5cm from rest/17.0 cm offhand
* Colt M1911: 30.0cm from rest/42.0 cm offhand
* 9mm Luger 06/29: 5.5cm from rest/11.5 cm offhand
* 7.65 Luger 06/29: 5.8cm from rest/9.0 cm offhand
The test Colt was a 1919 commercial Government Model, SN C113936.
And that P38 Walther was probably well made test piece. P1 can't be anywhere near that.