I have an extra disco breech, an extra disco .22 bolt and 10 inch .177 barrel.
I have to make this bolt to fit the barrel - whats the difference, besides smaller o ring used on .177? I measured 5,1 mm at the current bolt for 5,5mm (that mushroom head part), I suppose it should be smaller than that to fit the 4,5mm pellets bore.
Is there some difference in length perhaps?
Also, the end of the barrel that goes into the breech, does it have to be machined in some specific way, or just cut flat and inlet done properly? And what size of the hole should be made to fit the standard TP?
Thanks in advance