[BTCCA4]

Took my new RDB out for its first range day! Mucho fun!!
First impressions are as follows..
The night before, I took it apart, cleaned, lubed & ran a bore snake through it. Then off to my local indoor range the next day. No optics yet, so I used a set of Magpul plastic flip up sights at 25 yards using Federal 55 gr 5.56 FMJ out of the green ammo can. That pup is a lot of fun! I noticed the cases were coming out with bent necks & after about 20 rounds I had a FTF. Live cartridge ejected with a bent neck & mashed bullet, so I went 1 click lighter on the gas setting. Spent casings looked much better, but still slightly bent rolling on the workbench. Went 1 more click lighter, now the spent brass looks perfect.
Overall, shot about 90 rounds with nice groups @ 25 yards. Zero issues after the gas adjustment. Mags & mag release worked flawless. Amazing trigger. Can't wait till next week!

 

[IamScotticus]

When you say lighter, were you turning the gas valve CW or CCW from shooter point of view? How many clicks from full CCW is your sweet spot?

 

[BTCCA4]

From the shooter's POV, I went 2 clicks CW. (what the manual calls "less gas").
Sorry, I did not bottom it out to get a reference point either way.

 

[IamScotticus]

Youre probably within the typical 5 clicks from full CCW range.
Keep us informed.
Just keep adding new comments to this post.

 

[BTCCA4]

Will do! Range day is Sunday for me.

 

[BTCCA4]

So week 2 with the RDB went just like the first. Shot 60 flawless rounds in between pistol shooting. Feeding, ejecting & running like a pro. Federal 5.56 ball ammo from the ammo can. Loving it!

 

[Specialist05]

In my humble opinion, these edges need to be smoothed due to catching on the shell rim and shell body.

 

[IamScotticus]

Yeah, KT usually does that when they get them for service.