Those groups look usable. But I wonder if the bullets and abrrels are still not spreading as the distance increases.

Perhaps try increasing the velocity a small amount, bring the barrels in closer together and maybe drop them lower on the target as well with more velocity.

But no problems with the regulation at all at 50 yards. Except maybe hitting a little high. But can be well used on deer sized game out to a 100 yards as is.

Doing well.

I have always liked the Merkels. A plain rifle but on the used market often very affordable and do what they are meant to do.

Well done.