Issue with new Ruger AR 556

[bill gass]

Problem I'm having is its not feeding steel case ammo,brass case no problems.
At first I thought mag issue -nope happened with all 4 mags(factory 5rd, 2 LAR 10rd and a magpul 5/30).
Steel case ammo was Barnul and mfs, brass was federal and ppu.
Any advice??
Thanks

 

[Trinimon]

Couldn't resist.

What's happening? Is it double feeding? Is it not ejecting spent cases? Is it slamming into the side of the round halfway up the feed ramps?

I recall reading that MFS steel case ammo was underpowdered? Not sure about Barnul stuff.

 

[bill gass]

It's not stripping the second round from the mag,looks like the bolt is running across the top leaving a gouge on the case. Hence I thought mag issue.

 

[crashcollins]

Under powdered ammo! bolt isn't travelling fully to the rear to pick up the next round. Break it in a bit with good ammo ( few hundred rounds maybe) then lube it up good and try the cheap stuff again.

 

[rkm456]

Why not just run brass case if steel is giving you issues? It's not like there's a huge savings shooting steel.

 

[hawkmp9]

Don't use steel. I won't use it in my Ruger ar-556. There's a few topics in the forum about steel cased AR ammo.
The only time I experienced what you're describing was with specific mags.
As stated before. Brass cased ammo is better quality and minimally higher cost.

 

[dacron]

Some semi autos don't like steel, nothing you can do really but use brass.

 

[bill gass]

Thanks guys, guess I shouldn't have bought 500rds when they were on sale lol. Just couldn't resist lol. I'll try again after more break in period with brass cased ammo.