aero .308 build short stroking

duuuuuuce · December 27, 2015

No marks that I can tell, posted a pic for reference. Gas port on barrel is measuring .0781 I don't know how exact that is but a 5/64 bit fits extremely snug.

unforgiven · December 27, 2015

Changing the recoil system is not expensive brother.Might want to try that before you drill.Just sayin.

duuuuuuce · December 27, 2015

What type of spring and buffer should I get? What's difference between the H3 and whatever the other one is?

duuuuuuce · December 27, 2015

And why would it work with the heavier grain ammo?

duuuuuuce · December 27, 2015

UPDATE*

Drilled gas port out to .090 and it ate all re match grade ammo and the cheap 149 grain federal. It was raining rather hard so I only loaded /3 mags with 3 rounds a piece and bolt locked back on each one. 100% success rate.

I am hesitate to say it's fixed but till next range trip it would appear as if it is.

washguy · December 27, 2015

UPDATE*

Drilled gas port out to .090 and it ate all re match grade ammo and the cheap 149 grain federal. It was raining rather hard so I only loaded /3 mags with 3 rounds a piece and bolt locked back on each one. 100% success rate.

I am hesitate to say it's fixed but till next range trip it would appear as if it is.

You're welcome LOL machine gun smiley Wash

392heminut · December 27, 2015

UPDATE*

Drilled gas port out to .090 and it ate all re match grade ammo and the cheap 149 grain federal. It was raining rather hard so I only loaded /3 mags with 3 rounds a piece and bolt locked back on each one. 100% success rate.

I am hesitate to say it's fixed but till next range trip it would appear as if it is.

Nice! Sounds like you found the problem!

blue109 · December 27, 2015

Damn xcaliber ....good thing your gas port sizes are such a closely guarded industry secret! I'd hate for any other barrel makers to stumble across them and try them out.

392heminut · December 27, 2015

Damn xcaliber ....good thing your gas port sizes are such a closely guarded industry secret! I'd hate for any other barrel makers to stumble across them and try them out.

ROFLMAO!!!!!!!!!!!!!!!

washguy · December 27, 2015

Damn xcaliber ....good thing your gas port sizes are such a closely guarded industry secret! I'd hate for any other barrel makers to stumble across them and try them out.

I think what the deal is....the port sizes are so closely guarded that they cant look at the data to drill em out .....one more time...beware of the vendor that pimps their stuff on ebay....especially gun stuff and double that on barrels shot in the foot smiley Wash

duuuuuuce · December 27, 2015

LOL Maybe they should take a little insight from the people on this forum so it would all work the first time.

Thanks everyone for the help and pointers.

Made it allot easier diagnosing what was wrong!

shepp · December 27, 2015

I missed the X-caliber barrel the first time, good call guys. Sounds like your gtg Duce!

duuuuuuce · December 27, 2015

Yessir, good group of guys on here, looks like I'll be sticking around. ?

duuuuuuce · December 27, 2015

I think what the deal is....the port sizes are so closely guarded that they cant look at the data to drill em out .....one more time...beware of the vendor that pimps their stuff on ebay....especially gun stuff and double that on barrels Wash

LOL now that's funny but honestly the quality of the barrels are not to bad. You would think barrel manufactures would go a little bigger on there port sizes to make sure stuff like this don't happen.

What does to big of a port effect? My gun felt a little smoother with it opened up and the shells weren't ejecting huge distances (just a few feet) so I'm guessing it's not over gassed now.

Pewpewdynamics · December 27, 2015

I am having the same issue (kinda) I have an aero lower using there tune, buffer, and spring. A 14.5 ballistic advantage barrel (carbine gas) seekins adjustable gas block. I think mine may be over cycling? Bolt will not lock back on empty mag. If I hold the bolt catch in the catch position the bolt will catch every time. It ejects every round but doesnt pick up the next one. I have tried different magazines. The bolt is also leaving dents in the back of my lower. Any ideas? I am also running a saker brake. I am sure that adds more back pressure.

washguy · December 27, 2015

Duuuuce you gotta read the thread from xcaliber on gas port size secrets in Jts thread to get the jest of the jokes....but then again its a waste of time but good for giggles

their rep reported here some crazy talk bout gas port sizing being trade secrets that are worth big money so to speak...he is tripping in that thread....lol

Wash

duuuuuuce · December 27, 2015

Yeah I briefly read through it, I saw the x-caliber guy post and all you guys jumped on him, I got a good laugh outta it.

Just need to get a .308 bore sight and a bipod and I'll get this baby sighted in and get some grouping pics @ 100yds.

duuuuuuce · December 27, 2015

I am having the same issue (kinda) I have an aero lower using there tune, buffer, and spring. A 14.5 ballistic advantage barrel (carbine gas) seekins adjustable gas block. I think mine may be over cycling? Bolt will not lock back on empty mag. If I hold the bolt catch in the catch position the bolt will catch every time. It ejects every round but doesnt pick up the next one. I have tried different magazines. The bolt is also leaving dents in the back of my lower. Any ideas? I am also running a saker brake. I am sure that adds more back pressure.

Read what survivalshop said on the first page last post. Sounds like he will be able to help you/your problem is in the buffer tube and accessories. Maybe he will chime in later to get you on the right track.

blue109 · December 27, 2015

^^Few guys had that issue. I would search around the Aero build threads.

Edited December 27, 2015 by blue109

Pewpewdynamics · December 28, 2015

^^Few guys had that issue. I would search around the Aero build threads.

Sorry but can you tell me how to get to that section? I am new to the site and can't seem to find it. I'm using a mobile device.

shepp · December 28, 2015

Sorry but can you tell me how to get to that section? I am new to the site and can't seem to find it. I'm using a mobile device.

click the magnifine glass atop the page, pretty sure there's a post on it in this section in the first five pages.

also so welcome and feel free to post up in the intro section

duuuuuuce · December 28, 2015

^^^ Do what he said. More knowledgable than me on these topics.

Edited December 28, 2015 by duuuuuuce

shepp · December 28, 2015

Sorry but can you tell me how to get to that section? I am new to the site and can't seem to find it. I'm using a mobile device.

now that you say that, my hey talk about that in the thread on the ex caliber barrels don't they?

washguy · December 28, 2015

isnt this one of the aero probs that 98z had and solved? http://forum.308ar.com/topic/11236-98zs-aero-precision-rifle/#comment-148140 Wash

jtallen83 · December 28, 2015

No marks that I can tell, posted a pic for reference. Gas port on barrel is measuring .0781 I don't know how exact that is but a 5/64 bit fits extremely snug.

Looks like X-caliber has a one size fits all approach to gas ports, that pretty close to where mine started life.

Looking forward to seeing how yours groups, mine spreads a bit when the heat is on.