Wm.Traynor wrote:As Oldbloke says, some of those groups are really good
Interesting pic of the firing pin indents. Are you thinking of altering the profile of the tip, by any chance?
Yeah it can shoot and as I mentioned in my reply to Oldbloke, I reckon it can shoot way better than what I'm capable of. The tighter groups are probably the gun showing it's potential and the other more open groups were likely me messing up.
As for the firing pin profile, so long as it continues to behave I see no reason to change it. It had about 120 rounds through it on Saturday without incident.
I took a lot of measurements and photos of the old internals before it went away for 'assessment' and the new striker/firing pin assy measures about 0.25mm longer than the original.
New firing pin/protrusion:
Those of you who have been following this post from the beginning, will recall that one of my other major gripes with this thing, was the finish on the bolt face and the poor general finish/machine marks left behind in various places.
Here's the new bolt face, still shows some tooling marks but better than the first one. I've worked in engineering workshops and I've operated lathes. Facing off rod stock is pretty difficult to make look ugly - but somehow they achieved it the first time around. This one's not so bad.
Maybe I'm just a fussy grumpy old fart...
Internal machining of the new bolt and old bolt:
New bolt:
old bolt