My new build

[DNP]

Double up on the chain, or put some really heavy stuff on that one. 

[ebbiv]

On 5/1/2022 at 6:33 PM, shooterrex said:

Got out this afternoon. Robbed a scope off another rifle.

The Hornady black doesn't lock back on an empty mag. Locking on the BCG not the bolt.

The Hornady Match does most of the time.

I only ran 35 rnds through it.

Gas block may not be sealed up yet or I might have to open the gas port up a bit. I didn't measure it before assembly.

Getting velocity's in the 2630 range out of both loads.

Very windy today. Wind was actually blowing my targets around so the groups sucked.

 

its dry, and tight,  take the bolt apart, soak in oil overnight,  clean it up, then oil it heavily, clean and oil the buffer and spring, and that should do it.  had this problem with my 308, i just didn't realize what wet meant, its oil till it looks like too much and then some more.  Also look closely at bcg with maginfying glass and if there any marks that catch the finger nail, smooth with some emory cloth.  if is ejecting between 3-430 its not a gas issue. and heres a good article on buffers, because once you start messing aorund there like many do you wind up with even more issues,  i've never had anything but stock buffers in my guns and never had an issue nor do i believe in fancy ones as most of the time fix you think it provided is really just hiding the real issue

 

https://www.arbuildjunkie.com/ar-15-buffers-and-buffer-springs-basics/#:~:text=rifle receiver extensions.-,AR-15 Buffers and Buffer Springs – What Does the Buffer,it more enjoyable to shoot.

[shooterrex]

2 hours ago, ebbiv said:

its dry, and tight,  take the bolt apart, soak in oil overnight,  clean it up, then oil it heavily, clean and oil the buffer and spring, and that should do it.  had this problem with my 308, i just didn't realize what wet meant, its oil till it looks like too much and then some more.  Also look closely at bcg with maginfying glass and if there any marks that catch the finger nail, smooth with some emory cloth.  if is ejecting between 3-430 its not a gas issue. and heres a good article on buffers, because once you start messing aorund there like many do you wind up with even more issues,  i've never had anything but stock buffers in my guns and never had an issue nor do i believe in fancy ones as most of the time fix you think it provided is really just hiding the real issue

 

https://www.arbuildjunkie.com/ar-15-buffers-and-buffer-springs-basics/#:~:text=rifle receiver extensions.-,AR-15 Buffers and Buffer Springs – What Does the Buffer,it more enjoyable to shoot.

There was plenty of lube. This is a new caliber for Wilson Combat barrels. They don't always get gas ports right on new products. It might just be not broken in yet. The gas block may not be sealed up yet. I am still in the discovery phase of why it isn't running 100%.

[98Z5V]

9 hours ago, ebbiv said:

its dry, and tight,  take the bolt apart, soak in oil overnight,  clean it up, then oil it heavily, clean and oil the buffer and spring, and that should do it.  had this problem with my 308, i just didn't realize what wet meant, its oil till it looks like too much and then some more.  Also look closely at bcg with maginfying glass and if there any marks that catch the finger nail, smooth with some emory cloth.  if is ejecting between 3-430 its not a gas issue. and heres a good article on buffers, because once you start messing aorund there like many do you wind up with even more issues,  i've never had anything but stock buffers in my guns and never had an issue nor do i believe in fancy ones as most of the time fix you think it provided is really just hiding the real issue

 

https://www.arbuildjunkie.com/ar-15-buffers-and-buffer-springs-basics/#:~:text=rifle receiver extensions.-,AR-15 Buffers and Buffer Springs – What Does the Buffer,it more enjoyable to shoot.

His build is on the AR15 platform.  You can put those things together and run them bone dry, and they'll cycle.  It's not on the .308AR platform.

[Youngwolf1996]

For DNP Specialist. I have found you are linked to CROMUSA.com. The website is not working and when you go to it you're spammed to a fake website and not able to access anything including tracking an order. Is there anyone that can provide a contact number for CROM or someone that can provide information to help with contacting about the order that was placed. I have tried multiple times to contact through email and getting no response. I have paid quite a bit on the cromusa.com website. Didn't know how to get ahold of someone so hopefully you can help.

[JBMatt]

1 hour ago, Youngwolf1996 said:

For DNP Specialist. I have found you are linked to CROMUSA.com. The website is not working and when you go to it you're spammed to a fake website and not able to access anything including tracking an order. Is there anyone that can provide a contact number for CROM or someone that can provide information to help with contacting about the order that was placed. I have tried multiple times to contact through email and getting no response. I have paid quite a bit on the cromusa.com website. Didn't know how to get ahold of someone so hopefully you can help.

Their server got hacked and they're addressing the issue.  Should be taken care of soon.

[DNP]

2 hours ago, Youngwolf1996 said:

For DNP Specialist. I have found you are linked to CROMUSA.com. The website is not working and when you go to it you're spammed to a fake website and not able to access anything including tracking an order. Is there anyone that can provide a contact number for CROM or someone that can provide information to help with contacting about the order that was placed. I have tried multiple times to contact through email and getting no response. I have paid quite a bit on the cromusa.com website. Didn't know how to get ahold of someone so hopefully you can help.

Not sure where you decided I am connected, or how it pertains to this topic. No more connected than anyone on this forum.  Email info@cromusa.com, start a thread in their section here…would be a good start. I don’t have any special info about phone numbers or other contact info.

[shooterrex]

.0660 drill bit fits w/a little wiggle.

.0690 bit won't go in 

@98Z5V

Edited May 6, 2022 by shooterrex

[shooterrex]

[shooterrex]

Gas port is now .081

I'll see how that works tomorrow.

Scope and mount showed up and are installed.

[JBMatt]

Your speeds are right in the ballpark for what I see through 18" barrels here.  Yours might be just a couple feet faster.  How did they group?  So far every gas gun I've put both factory Hornady loads through patterns like a shotgun.  But at least they're worth the brass.

[shooterrex]

It was very windy and I was shooting off the hood of my jeep without a good rest. Groups were not that good and I didn't even take any pics. There were a couple with bullets touching then a flyer 3" away. If I get a chance this weekend I'll get some groups from sandbags.

[98Z5V]

6 hours ago, shooterrex said:

.0660 drill bit fits w/a little wiggle.

.0690 bit won't go in 

@98Z5V

WAY too small, brother.  Glad to see it's 0.081" now.  That might solve the whole thing.  What's the buffer weight, again?

24 minutes ago, shooterrex said:

It was very windy and I was shooting off the hood of my jeep without a good rest. Groups were not that good and I didn't even take any pics. There were a couple with bullets touching then a flyer 3" away. If I get a chance this weekend I'll get some groups from sandbags.

That small-ass gas port will fuk your groups all up, big time.  Gun isn't doing what it needs to do in the very first place, and that affects the bottom line on what your accuracy will be - the gun is already struggling, so you won't see any fantastic groups.  Hope that makes sense.  Try the same ammo again, now, and see if your groups are any better.

[98Z5V]

Just now, 98Z5V said:

What's the buffer weight, again?

@shooterrex, disregard.  Rifle recoil system, so you're 5.2~5.4oz.  You're where you need to be. 

[shooterrex]

It runs fine now. Bolt locks back just fine. New scope is on. There is 2- 5 shot groups @ 87 yds. Eld match.

[98Z5V]

Keep working with that, brother - that gun is doing what it needs to now.  

[jim3326]

On 5/2/2022 at 10:05 PM, 98Z5V said:

If my shiit works right, in my brain and experience, then you need a gas port diameter that's 0.085" MINIMUM, and possibly up to 0.090".  Check your gas port, brother, and let me know what it is now. 

Reading this, it sounds like I need to open mine up a tad. 18" Criterion mid-length, .75 journal w/ .076 gp, 8 11/16" dwell.

[98Z5V]

2 hours ago, jim3326 said:

Reading this, it sounds like I need to open mine up a tad. 18" Criterion mid-length, .75 journal w/ .076 gp, 8 11/16" dwell.

Yep, for sure.  18" midlength with 0.750" journals need 0.085", and they'll eat anything.

[ebbiv]

On 5/4/2022 at 10:05 PM, 98Z5V said:

His build is on the AR15 platform.  You can put those things together and run them bone dry, and they'll cycle.  It's not on the .308AR platform.

Regardless they all love oil, the 15 is essentially a shrunken 10, same concept and while less critical oil wise over a 10 it can’t hurt.  I would start there because its easy and safe

[shooterrex]

29 minutes ago, ebbiv said:

Regardless they all love oil, the 15 is essentially a shrunken 10, same concept and while less critical oil wise over a 10 it can’t hurt.  I would start there because its easy and safe

The only change was a larger gas port and now it runs fine. Must have had enough oil in the first place.

[shooterrex]

@98Z5V

Edited July 25, 2022 by shooterrex

[98Z5V]

7 minutes ago, shooterrex said:

@98Z5V

Completely forgot you were the guinea pig on the WC ARC barrel, brother!   COMPLETELY!!!  

True to WCs offerings, the damn gas port was too small.  Expected, these days - the barrels are badass, but they need to fire the "engineer" that tells them what the gas port size needs to be. 

Where's that other know-it-all guy that was in here?  He hasn't been on here in awhile...   gladly...