Vanniek71

Good stuff man Transitions always can use work, going to add this to my practice repertoire! Merry Christmas to you as well.

I tried all 3 variants of the Taccom pins. Older Standard style, fat head and new standard style. For whatever reason when my hammer hits the pin, it yaws it in the firing pin channel (Taccom bolt) and causes it to hit the side of the firing pin hole. Chews up the head of the firing pin in 100-150 rounds. The design on the CMMG whatever makes it different (maybe shoulder area of pin) works great and doesn’t show the same wear/damage.

I had trouble with all the Taccom pins, swapped to CMMG and haven’t had an issue.

I checked mine out as well, I was worried about that, it looks fine and shoots well, so time to grip it and rip it lol

I think my issue is finally fixed. I tried a CMMG firing pin and ran 210 rounds through my gun. Primers all look great and the pin has 0 chewed up issues like the previous pins. CMMG pin which has more rounds on it than all my other pins Other pins both with less than 200 rounds on them For whatever reason this CMMG pin works better with my bolt.

What bolt do you have?

Who is Max? (Kidding)

What pin did you go with? I just ordered some CMMG pins to try on the recommendation of another board member

I have the same issue, just came across this thread and this is exactly whats happening to mine too. I have had 2 of the older style pins and one of the large head pins end up looking like the OP's. I will say the older style weren't as bad but still somewhat chewed up. Its concerning as I have about 600-1k on my rifle is all. L9X25 let me know what was going on in another thread I created on the same subject. I am going to try a different pin that someone recommended to me before I just switch to a different bolt all together.

I thought of that but was lazy at the last match and didn’t pick any brass up lol

If it’s the firing pin channel would allow more wiggle, if it’s the firing pin hole, can allow primer to push back in to hole under pressure and possibly damage pin, or if a primer is pierced blowback getting in to the hole can damage as well

I think I may have an enlarged hole or something as well, the conventional design pins were doing the same thing on me. It was recommended that I try a CMMG pin, so going to do that before I give up. But I may have to send this bolt back and try something else

So its dremel and straight edge time is what you are saying? LOL ( I don't have a mill)

Here is what I see, on the fat head you can see it’s hitting towards bottom, so that’s correct. I guess my issue is why? It should be made so I don’t have to machine firing pins I would think lol

I've ran the older style pin and big head style (both pictured) the older style was less chewed up but still chewed up especially for 25- or so rounds. Ill take a look at the head of the pin and see if I can see anything but there may not be enough rounds on them to even determine that at this point.