308 Lazy Ejection

[billymagg]

On 2/10/2021 at 6:47 PM, billymagg said:

In the process of getting my small frame .30 to run, different magazines, springs, buffer's, ammo, once I went to the Lancer mags things began to shake out.. finally the 110's and 135's began to run, the 125's would feed and cycle on occasion,, through this all, I ended setting up two tarps end to end to capture the empties, very nice ejection, and fairly consistent as to where it was going to go...

I decided to get the .308 out when I picked up some 149 gr Winchester White Box, I realized they were just crawling as far as ejection, usually bouncing off the truck hood about 6" to 12" inches and rolling off the front of the hood, it was cycling everything fine, but I realized every thing was lethargic.. so I assummed I'd just open up the gas block, it was about 1/2 way open, opened up my adjustable gas block, and NO real change, the gas port was around .82.  Took my new cheap ass Chinese 3/32" drill bit, and attempted to cut through the "armor tough" around the gas port,,, it took a lot of oil, drilling, and checking, and about 10 minutes to get through that crap detail, but l finally made it, put all the good bits back together and checked my gas block alignment, spot on and clear.. back to the range, and?? no real improvement, would start running about 1/2 open, but further opening up the gas port made no difference. Next I went up to point .098, started to actually get some gas, but still not what I would like to see, I ordered the KAK's heavy 2.5" 5.3 oz Carbine buffer, ejector, spring, and roll pin.. in the meantime, I drilled up to .0995. 

Monday my Heavy Buffer came in, so I installed it, the 40 coil flat wire spring and ran out to the ranch for another range session, much better gas, but still bouncing off the truck hood... so this morning I popped out my old square top with a slight bevel ejector and installed the KAK ejector, I tried to use the new KAK spring its longer and very stiff, and stuck out of the bolt face far enough to make getting the new ejector in difficult... so I put the old spring in with the new ejector, much better function, but still bouncing off the truck hood?

So, I'm going to take it up to .1015, and pull the bolt back down and get that heavy ejector spring in there somehow,  I could live with it now, but its frustrating. I'm hopefull with the longer heavier KAK spring, and a little more gas, it will kick them out like it should... the extractor has a good looking spring and the donut, it is stiff and always, always, pulls them right out of the chamber....

even at .0995, I'm still running my gas block nearly wide open... I've been surprised reading all the threads on 308 ar forum with similar issues, and yes it is very, very wet, it runs amazing, except for weak ejection..and I took apart my adjustable gas block and hosed it out good, no obstructions at all.

Ok, here we are on Thanksgiving Day,, boring, wifey has the "Wuhan Flu", so no kids or grandkids,, dang its quiet.. I posted under general discussion, but thought I would update this post.. So lazy, lethargic ejection since day 1, new Wilson Combat .308 Tactical Hunter,, shooting 147gr Winchester white box, and a failure to eject with a round fed off the top of the magazine tying up the gun.. easily cleared and went to install a Wilson Combat TR-BUK-10 AR-10 Bolt Upgrade kit,, as I was cleaning and inspecting, I found 1/2 of the claw extractor sheared off, and the rest very nasty and sharp... so emailing Wilson Combat, and calling them tommorow,, they may be closed for Thanksgiving.. as a shameless Wilson Combat acolyte,, dammit all to hell! and no, I'm not worth a damn posting pictures either,, and my daughters can't come help the old bastard...