Quote Originally Posted by aimless View Post
both rifles have the front-sight very close to the eye. so at my age it is not easy, to get focussed. I need some training ;-) or a big beer.

ref. the 8 mm rifle: I shot only plastic-BBs.

ref. the .177 /4,5 mm rifle: Today I fixed the spring but I have only 4,65 mm ( 0,183 inches) lead-pellets.
I can perforate with these a tin can (both walls) easily, but they might not fit exactly. So I am trying to search for a dealer which sells/offers bigger ones. Perhaps anyone here knows one????? 4,8 mm ??? 4,9 mm????

With the smaller gun (.177) I will go next week to the rifle range and shoot at 10 m /10 yards....will show results.
Jochen please see this recent thread about ideal ball sizes for Giffards.