Any high quality target .22 is ammo sensitive.Nobody should walk up to the firing line without having first determined whic ammo it prefers...and the 22s are the most segregational on that point.
While the 41 is a very well built gun(I've owned one),I'd go with the Walther if the angle of the grip fits you.The difference in the angle is not much but when every scoring point counts,you don't need the distraction to compensate for the ''ackward feeling''grip angle.
Go with the most confortable angle,Then,as far as the grip per se is concerned,you can always adjust to the proper configuration of your hand(sanding down or adding wood putty).