Highest round count

Mine is at about 3200.

2k and it's been flawless with various mags as well. no double feeds either...again flawless.

Mine is magazine sensitive. It will not run colt magazines but will run any poly magazine perfectly.

texcl2 said:

Mine is magazine sensitive. It will not run colt magazines but will run any poly magazine perfectly.

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i've got elander usgi steel mags and fn usgi along with brownell usgi mags. the usgi mags run like butter...likewise the poly mags work great too. hell i've even painted the brownell mags black and caked it on too and still no issues. wonder if i'd have same issues with colt mags.

I've got some catching up to do. Somewhere around ~1,200 total rounds I think.

The only actual colt mags I have are 20rds and they've worked fine. All other USGI (think they are Blackhawk and D&H brand) have also been without issue.

The colt 20 rounders are different, they fit. Its the new 30rnd gi colt mags that dont. I think the mag catch is too wide.

~300 no problems. I only have m3 pmags.

about 600 rounds, 2 double feeds shooting PMC 55g FMJ out of Brownell USGI Mag on my last trip out. No problems previously with same mags or Pmags

Put the suppressor on and shot out to 400 yards today, then ran the V-drill a few times. I am about 1 second slower on the V-Drill with the RDB than my match AR. I run the VDrill clean in about 4.5 to 5.0, today I was at 4.52. I was 5.64 with the RDB.

18 shots in 5 targets from the low ready. The VDrill from the Man: https://youtu.be/TuNSB9jkpyQ

Added 450 rounds this week, all suppressed pushing the round count up to 3650.

Question: for those who have had high round counts and no failures, did you thoroughly clean and lube your barrel and action prior to operating the gun the first time? Did you clean and lube your gun there after regularly, sporadically, or none at all? Thanks.

Bullpup777 said:

Question: for those who have had high round counts and no failures, did you thoroughly clean and lube your barrel and action prior to operating the gun the first time? Did you clean and lube your gun there after regularly, sporadically, or none at all? Thanks.

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I tore it down completely, degreased everything and then lubed with Lucas Oil Extreme Duty and reassembled. I checked it every 250 rounds and then did a complete tear down, clean and lube again each 1K after that.

Top rail screws loosening is not really a failure, but that is all I have had happen on mine.

Thanks for your info. What do you recommend striping it down with and do you recommend loltite on the mounts? Mini14s are far more accurate when cleaned and lubed from the factory. Just wondering if reliability and accuracey are improved for the RDB if cleaned and lubed from the factory as well.

Bullpup777 said:

Question: for those who have had high round counts and no failures, did you thoroughly clean and lube your barrel and action prior to operating the gun the first time? Did you clean and lube your gun there after regularly, sporadically, or none at all? Thanks.

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i cleaned the bore prior to first shoot and always after each range session or before shooting again. made sure the bolt was coated but other than that the gun is pretty low maintenance. maybe a light application on gun grease on the bolt housing and that's it.

Bullpup777 said:

Question: for those who have had high round counts and no failures, did you thoroughly clean and lube your barrel and action prior to operating the gun the first time? Did you clean and lube your gun there after regularly, sporadically, or none at all? Thanks.

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Ran a boresnake down barrel, shot the snot out of it. Accuracy at 100 yards is around 1.5-2.0 inch, with 77 grain SMK handloads and haven't had any functional problems. Top rail came loose but Loctite seems to have fixed that. Only have around 300 rounds thru it but I'm happy with it. Cleaned it once now I need to go put another thousand or so to see if it gets dirty as when I cleaned it, it wasn't very dirty at all..

Bullpup777 said:

Thanks for your info. What do you recommend striping it down with and do you recommend loltite on the mounts? Mini14s are far more accurate when cleaned and lubed from the factory. Just wondering if reliability and accuracey are improved for the RDB if cleaned and lubed from the factory as well.

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I use Lucas Oil Contact Cleaner. It is close to non-chlorinated brake parts cleaner, no residue and totally strips off everything, including water.

I get the best accuracy with the lighter bullets, which makes sense with the lighter profile barrel.

Loctite, yes, that is probably the best bet. I will probably use something in the 600 series.

Thanks Markco and Hberret - really appreciate the info.