I like the idea to have a friend shoot it. just to see. I've done it for friends for years, and found the problem most times was them.
but...you have to adjust the gun to YOU. so....
now, keep in mind I've adjusted my rear sight many times.
some range days are different than others.
a slight 'twitch' to the rear sight may solve your problem. until the next time you shoot.
HA> that's what makes this so much fun.
Ken