PSA -PA10 Question

[widowmaker972]

I have a a PA10 upper with a matched PA10 lower SR25, been using ASC SR25, 20 round mags.  When I load the mag with 7.62x51, chamber a round, and pull the trigger,  I get nada and the bolt locks up,  I have to take a hammer and pound on the charging handle back to get the round out of battery.  This does not happen with .308 Win.  What's the deal?,  I thought 7.62x51 and .308 win were the exact same round with the load being the only difference.  Help !

[98Z5V]

Very, very, very tight chamber - or some bad reloads with a compressed shoulder.

 

What barrel are you using, and what ammo are you using?

[edgecrusher]

Very, very, very tight chamber - or some bad reloads with a compressed shoulder.

What barrel are you using, and what ammo are you using?

And just as important, has this been headspaced?! And whose bcg are you using?

[washguy]

And dont pound on the charging handle....or let a range master do it....ask me how I know :)  Wash

[survivalshop]

 Why not Mortar the rifle , to eject , just make sure, if its equipped with a collapsable stock , that is collapsed all the way , before you do it .

 

 Head Space needs to checked , as said . 

 

 What does the Barrel read , as far as caliber ?

  

 What 7.62x51 ammo are you using ?   What 308 ammo ?

Edited January 28, 2015 by survivalshop

[Robocop1051]

I say maybe head space, or.... either the barrel or the bolt is AR10 and the alternate is DPMS.

[Dport257]

I have a PA-10 and was under the impression only AR10 mags would work, such as PMAG10s, not SR25 mags. 

[98Z5V]

4 hours ago, Sldavenport1 said:

I have a PA-10 and was under the impression only AR10 mags would work, such as PMAG10s, not SR25 mags. 

PMags and SR25 mags are the same pattern.  It's the Armalite AR-10 mags that are different.  Well, not the newer AR-10 A-Model, which is made to take the PMags.

[Dport257]

Ah, okay, I was confused.