True Velocity ammo available at Bimart.

[TTSX]

That is where the fal gas system excels. It is usually set to bleed off some gas even with lighter loads. It can be opened up to direct more gas to the piston if needed. An ar10 would need a large enough gas port to begin with to possibly work with lower pressure ammo.

I also do not believe it's a pressure issue. I believe it's a mass issue of the casing. We're trying to apply what we know works with brass and steel to a totally different material

Regardless, I would be willing to send you a few rounds to test out, so long as you post the results

 

[osprey]

I am not sure I follow you, wouldn't the lighter cases take less pressure to extract and eject? Or maybe the heated polymer is sticking to the chamber walls? I would think the extractor would be ripping rims if that were the case. I see cabela's is carrying this ammo, albeit at 59.99 for a box. My cabelas mastercard has a few hundred points built up so maybe I will buy a box in the name of science.

 

[TTSX]

Ejection 2 — True Velocity

www.tvammo.com

I may have been wrong about the gas setting, however this video explains the mass issue I'm referring to

 

[osprey]

Thanks for the link. It sounds like less gas or a heavier buffer may be the solution so an adjustable gas block may work on an ar10. Who wants to custom tune for this spendy ammo though? when there is plenty of brass and steel cased ammo readily available for much less $.

 

[Caveman Jim]

Here it is, what's left of 500 rounds of PCA ammo.
It's actually dark gray but the flash shows up like white.

 

[Local Loader]

Here it is, what's left of 500 rounds of PCA ammo.
It's actually dark gray but the flash shows up like white.

View attachment 1333126 View attachment 1333127 View attachment 1333128

Did you load those or buy them? If you loaded them, where did you get them?

 

[Caveman Jim]

I bought then online, PCA ammo is only sold as ammo.

 

[Prefontaine]

Damn. I bought a box two days ago at Bi_Mart and it was 39.77.

 

[ageingstudent]

Here it is, what's left of 500 rounds of PCA ammo.
It's actually dark gray but the flash shows up like white.

View attachment 1333126 View attachment 1333127 View attachment 1333128

Man that's weird looking

 

[Savage Jav]

The guy that showed it to me said that the target market is guys that carry a lot of ammo on person. Because of the greatly reduced weight. Also said that the gun should run cooler because the plastic does not conduct heat well.

I am neither an Operator nor a LARPER, so I'm out!

Nor carry alot of ammo