Ruger SFAR issues

[Tonopah]

I pulled my 308 Ruger SFAR 16” out of the back of the safe, removed the OEM muzzle brake and installed a Keymo brake. Attached a Dead Air Sandman to it and went shooting. The OEM gas block was still set at 3. Shooting was problematic. Mostly failures to eject at all or only partial ejection.

I set the gas block to 2 but the same thing happened pretty much the same way. I set it to 1 and it was better, but far from reliable.

I removed the suppressor and set the gas block back to 3. Rifle shot fine. Dropped it back to 2 and had problems with ejection again. This rifle probably only had 50 rounds through it, all on the factory supplied initial gas block setting of 3, and functioned fine before I put it in the back of the safe a couple of years ago.

The serial number on this rifle is 563-04587 so it was “shipped in 2022.”

By the way, the rifle is quite accurate as I had no trouble at all hitting 200 and 300 yard plates from an unsupported standing position — when it did shoot.

Should I order and install a Superlative gas block or just continue to shoot it on setting 3 with no suppressor for a while and see if the rifle somehow magically “breaks in”?

 

[RockAndSage]

I pulled my 308 Ruger SFAR 16” out of the back of the safe, removed the OEM muzzle brake and installed a Keymo brake. Attached a Dead Air Sandman to it and went shooting. The OEM gas block was still set at 3. Shooting was problematic. Mostly failures to eject at all or only partial ejection.

I set the gas block to 2 but the same thing happened pretty much the same way. I set it to 1 and it was better, but far from reliable.

I removed the suppressor and set the gas block back to 3. Rifle shot fine. Dropped it back to 2 and had problems with ejection again. This rifle probably only had 50 rounds through it, all on the factory supplied initial gas block setting of 3, and functioned fine before I put it in the back of the safe a couple of years ago.

The serial number on this rifle is 563-04587 so it was “shipped in 2022.”

By the way, the rifle is quite accurate as I had no trouble at all hitting 200 and 300 yard plates from an unsupported standing position — when it did shoot.

Should I order and install a Superlative gas block or just continue to shoot it on setting 3 with no suppressor for a while and see if the rifle somehow magically “breaks in”?

What was it lubed with? How much, and where?

 

[RockAndSage]

What was it lubed with? How much, and where?

Also, IIRC, going from setting 3 to setting 2 actually reduces the gas, right?

 

[43.6N]

For your gas block, is “3” wide open? And “1” most restricted?

Here are a few follow up questions from 20years of working around and “tuning” ar15’s and AR10’s:

How far was brass ejecting? Any pattern to the ejection? Does your bolt ejector plunger work? Extractor claw is clean? Good tension on the extractor? Any chipping or premature wear on your bolt lugs?
What does your buffer system look like? What does the buffer weigh? Does the spring have a color painted on some of the coils?

 

[43.6N]

Mostly failures to eject at all or only partial ejection.

Describe this with a little more detail please.
Maybe pictures if you have them.