Fx impact barrel removal and POI

Yesterday I took my barrel out to clean it.Today I experimented a shift POI down like an inch and like .5 inch to the rigth, so guess removing the barrel does have change the POI slightly.Never the less the groups are tigth, rezero the scope and all in normal, ill crono in the afternon just to see if it wasn't for a FPS drop.
Any one has experience what I have?