G'day,
I've just modified the bolt head, on a Stevens 200, .223 size bolt head, to take the Grendel.
It was easy to open up for the case head ( I made it .446" ) but the extractor sat too far in to work. I couldn't just grind some from the claw, because the countersink underneath, that the 1/8" ball sits in, would have been cut into. I had to shift the hole slightly outwards. Hmmm.
This is where the extractor used to sit.
and this is where it sits now.
I simply cut a larger hole, to take a 3/16" ball and kept the inner edge of the hole in the same place, cutting metal from the outer side, thus shifting the centre of the hole outwards. You can see the bottom of the old spring hole here.
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Just post it over mate.


, mine hasn't arrived yet.
