contender barrel shifting point of impact

I moved my safe this week. broke the stairs putting it in the basement.but found out the heat element was disconnected.I fixed that when it was relocated. then went to the range with the wife on sunday after noon. she was shooting my walther p22 with a laser sight at 10 yards that thing can nail a target! shure would not want to be on her bad side when she has that settup. but the big suprise was the contender. it has been shooting the first round or two different than the rest.It did not do that on sunday. I am thinking it was drawing moisture in my safe with the disconnected ellement and fixing the ellement cured the problem will need a few more trips to the range to be sure.