That primer flow is normal for the cartridge.
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Keltec. But they have a really awkward build. Yesterday we went to the range and my cousin got a RK1 chameleon threaded barrel, and I played it safe with the standard barrel capable of adding pistol sights. His gun is definitely heavier and it just doesnāt feel right in my hand compared to what I have. He was so anxious to shoot, he loaded one in the chamber 27 gr v max hollow point and I know for the most part theyāre all hollow, but you can look inside the bullet. He shot a box of 50 like that before he got a magazine and today we loaded blue tip sporting ammo(all by FNH) and maybe one out of every 10 fired. The battery wonāt completely close when itās chambered. Heās a New Yorker who recently realized the beauty of the south and since I did 5 combat tours heās been learning details and how to shoot from me. But heās also 20 years older and he will do things like he wants because I never would suggest loading one at a time, itās not meant to be shot like that. But the RK1 chameleon barrel is heavier and chamber doesnāt seem to completely close. The blue tips are just a smidge longer and when we loaded the couple of hollow points I had the gun didnāt have any battery issues and I noticed a green color around the primer. The blue tips are for sporting purposes and from what Iāve seen they donāt tumble and I wonder if that plays into the problem. We here PSA is the Chevy to Fnh because my pistol shoots smooth and feels balanced. Every primer was dented but less and less. I tried to explain that primers for the most part donāt need much of a dent to fire. Even the Taurus hick-ups strike the primer and although itās common with Taurus, these bullets didnāt shoot no matter how many times we tried. Taurus will shoot the second time. Since it says compatible with Glock parts I compare this to what would be a full size 5.7 Glock, which is coming or at least I would like to think so. He thinks itās the firing pin but I think the barrel is off and I donāt know how I feel about shooting a round that doesnāt tumble as much or at all out of such a rifled barrel. I think these are merely growing pains and PSA hasnāt evolved the QC to recreate potential problems like this, none the less, can anyone relate? He did say he oiled that area pretty well and this is uncharted territory for everyone including PSA. Honestly I compare the gun to a performance car, if it says run 93, why would you entertain 87? So FN ammo, while expensive, is the only thing I feel comfortable running through it. Not just for basic shooting but accuracy doesnāt seem to be as consistent with other brands of ammo. Please donāt be afraid to share some wisdom
Thereās a lot to unpack in your post and Iām not sure I got it all.
Are you saying that you are shooting your ROCK 5.7 and youāre getting a lot of failure to fire issues.
This is unlikely to be an issue with the barrel. It is almost certainly eitehr an issue with firing pin mechanism or an issue with the ammunition.
I would buy different ammo and try that. You may have simply gotten a bad lot.
If problems persist even with different ammo, the definitely look the the mechanism. Common issues include damaged firing pin ; the tip may be broken. Or something may be slowing the forward movement of the firing pin. There could be fouling in the firing pin channel such as powder, powder residue, or too much gun oil (yes, that happens). I had one gun where the firing pin jammed hard in the firing pin channel because a fleck of lead from an HC bullet had somehow gotten into the firing pin channel and bound up tight between the FP and the return spring. If you feel comfortable doing so, strip down the firing pin to parts and clean everything. Many companies say to not oil the FP assembly at all because it can gather dust and debris.
Out of Battery condition sometimes causes failure-to-fire issues. This is usually accompanied by a dead/slack trigger. Usually just bump the slide back into battery and it fixes that. This is often caused by a dry or gummy slide-to-frame interface. Just oil it. sometimes it can be caused by a burr on the rails or sometimes some bit of detritus such as a fleck of copper or brass. It could, hypothetically, be caused by a part being out of spec, such as the breach or the slide but this is remarkably unlikely.
If a part is damaged or out of spec, itāll need to go back to PSA for repair.
The 5.7 is a well understood cartridge by this point, being 3 decades old, and NATO spec. The ballistics of 30-45 gr. .224 cal. bullets go back to at least the late 1930ās with the 22-250 Rem.
Peace favor your sword,
Kirk
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