BRT OPTIMUM Barrels

[WEK207]

Still planning on picking up one of Clint's SPR barrels and a SOLGW NOX, but I've also been thinking the MPR might be worth swapping into one of my other rifles.

Will some of these models be produced for some time?

[Clint]

Here are some OPTIMUM Chrono results to share:

Ammo was slightly older batch IMI M193 55gr FMJ that has shown proper velocities in the past.

Temp was 38F

16" MPR - 3084 fps - This is similar to or slightly better than other 16" barrels we've tested.

11.5" CQB - 2778 fps - Check.

9.0" PDW - 2546 fps - This is a seriously useful velocity from the very compact barrel. This upper cycles very nicely, just like the larger 11.5 CQB.

[Clint]

Nice shooting!

Accuracy should get even better throughout the break-in process and be settled in by 200 rounds.

Finally got out to start shooting the MPR barrel and I'm pretty happy with it. The conditions were horrid, -4 degrees and -30 Realfeel, with the wind in my face. I set a target between 55-60 yards(50 yard marker is under a snow berm, I made sure to exceed it), and started dialing in the scope. I threw several very hasty 3-shot groups while checking how the scope tracks before making a final adjustment and throwing a final 5-shot group. It's a great start, esp in such nasty conditions. Ammo was 62gr bthp handloaded, and this 30 minute range pit stop takes 1st place as the most painful range session of my life. Final group was .397 center to center according to my calipers (I measured outside edges and subtracted .223).
Attachment 55833
Attachment 55834
Attachment 55835

[WEK207]

Clint,

Will your 16" MPR barrels be returning at some point?

[Clint]

Clint,

Will your 16" MPR barrels be returning at some point?

Yes, we're starting on a new run now.


These are grouping nicely with the Federal 75 TMJ

100 yards from a bipod, shaky reset and mil-spec trigger in 28 degree weather.

[Clint]

New BRT OPTIMUM LPR and MPR barrels are available for pre-order.

Coupon code PRE will get you a complimentary Micro Pin Gas block.

BRT OPTIMUM LPR 16" EXT
BRT OPTIMUM MPR 16" EXT




Coupon code PRE will get you a complimentary Micro Pin Gas block.

[Jsp10477]

Just saw that you’re using a 5/8x24 threaded muzzle. Awesome. I’ll be giving one of these a try.

[Clint]

Just saw that you’re using a 5/8x24 threaded muzzle. Awesome. I’ll be giving one of these a try.

The large threads are an important part of the overall profile.

[Jsp10477]

I’ve been using ARP barrels and wanting to pick up a couple extras but he seems to be moving away from the 5/8x24 threaded muzzles and moving to more light weight profiles in 5.56/223wylde. The larger muzzle size does seem to help with accuracy for lighter weight bullets with less bearing surface.

[jerrysimons]

Thought about adding NP3 to the barrel extensions?