So I've done a lot of work to my MkII lately, and it has come a long way in terms of accuracy. However, it has seen a sharp increase in the number of rounds that don't go off.
I did do some work on the bolt (which is described below), but I am trying to figure out why I am seeing such a sharp increase in FTF.
Here is my main question: Do different brands of ammo use thicker brass, or is this more likely resulting from something I've done to the bolt?
Let me begin by saying that before I did this I had only put federal bulk pack and federal auto bulk pack through it.
In the process of testing out different ammo I noticed the failure increase, and it seems most pronounced with remington/eley target rifle ammo. It still has a high failure rate with wolf and eley sport ammo. I have only put a few rounds of other types of ammo through, but not enough to notice a pattern.
I still need to go out and test it with the bulk pack I used before to see if there is any difference.
I didn't do much to the bolt, but I'm not ruling out the possibility that this is something I've done.
I had the bolt completely dismantled at one point, and I polished the exterior and interior contact surfaces. I left the pin that contacts the sear alone, as well as the striker and extractors. The only other thing I did was clean everything thoroughly and reassemble the bolt.
I am almost certain that the nut that holds the bolt together is completely torqued, as it came to a very distinct stop when I reassembled the bolt. I checked this first because the spring wouldn't be as compressed if the nut was a little loose.
One last note, with wolf it seems that about 1 in five rounds has a ftf, and with the eley ammo it seems like almost half of them ftf.
Any insight would be greatly appreciated!
(Edited typo in thread title)
I did do some work on the bolt (which is described below), but I am trying to figure out why I am seeing such a sharp increase in FTF.
Here is my main question: Do different brands of ammo use thicker brass, or is this more likely resulting from something I've done to the bolt?
Let me begin by saying that before I did this I had only put federal bulk pack and federal auto bulk pack through it.
In the process of testing out different ammo I noticed the failure increase, and it seems most pronounced with remington/eley target rifle ammo. It still has a high failure rate with wolf and eley sport ammo. I have only put a few rounds of other types of ammo through, but not enough to notice a pattern.
I still need to go out and test it with the bulk pack I used before to see if there is any difference.
I didn't do much to the bolt, but I'm not ruling out the possibility that this is something I've done.
I had the bolt completely dismantled at one point, and I polished the exterior and interior contact surfaces. I left the pin that contacts the sear alone, as well as the striker and extractors. The only other thing I did was clean everything thoroughly and reassemble the bolt.
I am almost certain that the nut that holds the bolt together is completely torqued, as it came to a very distinct stop when I reassembled the bolt. I checked this first because the spring wouldn't be as compressed if the nut was a little loose.
One last note, with wolf it seems that about 1 in five rounds has a ftf, and with the eley ammo it seems like almost half of them ftf.
Any insight would be greatly appreciated!
(Edited typo in thread title)
