SJC Titan Compensator on Precision AR 308

[mosquitoshooter]

Hello folks,
I am building yet another precision AR 308. Will be using a 26" Bull Krieger barrel (308 Obermeyer) with the Mega Maten MKM Keymod receiver set. Geiselle Match Trigger. JP low mass bolt carrier group. Magpul PRS stock, etc. So, needless to say, the utmost accuracy out to several hundred yards is what i am trying to achieve. I will likely have $3,500 into this build when its all said and done.

With that, there are theories that "compensators" can negatively affect accuracy. Do you beleive this? I have never built a precision rifle with a "compensator". I have built many with "Muzzle Brakes" however that are tack drivers with Krieger barrels. Since "compensators" put downward pressure on the barrel do you think i would be crazy to go with the SJC Titan Compensator with this precision build? Otherwise I can go with a trusty surefire suppressor adaptor/brake.

Thoughts would be appreciated as I am not an expert on barrel harmonics.

Also, i will post another question but if you know anything about .936 adjustable gas blocks, i am curious. I am looking for one and I dont like how the JP blocks dont have adjstment screws that "lock" in place. I am now starting to read about SLR. I have never heard of them before and a year ago i searched high and low for the block design that they seem to have. Are they the best blocks if one is looking for a .936 adjustable block that "locks" the adjustment screw in place? Syrac doesnt have one in the .936 size.

 

[InkedIan]

well, the bullet has left the barrel before the brake has any affect on the rifle so it's all personal preference. I like my surefire brake(non socom) because it stops all muzzle jump.

 

[mosquitoshooter]

well, the bullet has left the barrel before the brake has any affect on the rifle so it's all personal preference. I like my surefire brake(non socom) because it stops all muzzle jump.

Thanks for your feedback. That is what my common sense and long held belief has told me. However, i have recently read things like, "even though the bullet has left the barrel, the gases that follow and actually pass the bullet on its way out can actually still affect accuracy. And, if there is "turbulence" in those gases due to a compensator, bad muzzle crown, etc, it can affect accuracy".

 

[InkedIan]

Thanks for your feedback. That is what my common sense and long held belief has told me. However, i have recently read things like, "even though the bullet has left the barrel, the gases that follow and actually pass the bullet on its way out can actually still affect accuracy. And, if there is "turbulence" in those gases due to a compensator, bad muzzle crown, etc, it can affect accuracy".

If you think about it a brake is kinda like a suppressor it the fact that it uses baffles to divert gases away from the bullets path and why some people think they see an accuracy increase with a suppressor(also do to the added weight on the barrel). So I wouldn't think there would be any way it would hurt accuracy unless there was another problem.

 

[dlouie87]

I run a SJC in my .223 and in my Jp .308. It's been a very effective brake in reducing recoil and muzzle rise but let me warn you.... people will HATE shooting around you. As long as you are behind the rifle or the shooter when he is shooting, it's not that bad.

Here is a cool little article as well:
AR15 Compensators pt.2

Off topic, I have a barely used JP brake (took off the LRP-07) and a benny hill rolling thunder for a .308 if you are interested. Just pm me so we don't clutter this thread.

 

[bunsen27]

I have both the JP and SJC and really have not noticed any differences in them performance wise. Both work great, especially when coupled with an adjusted gas system, and both are LOUD. I wouldn't fret over the JP adjustable gas block screw not being "locked". You can Loc-Tite it or use some Vibra-Tite to help retain it if you feel the need to. I have over 3k rounds each through two different JP adj gas blocks and the screws haven't moved from where I set them, and they have no thread locker/sealant on them. Other than that I recall the SJC is just a touch longer than the JP.

 

[mosquitoshooter]

Thanks guys, i do hear the sjc Titan will allow me to see my own poi as it is very effective!

 

[LocoGringo]

I had a SJC on a 3-gun rifle and it was STOOOOPID loud. It was also super effective at keeping the muzzle down for fast follow up shots. For a precision rig, why? The first shot should be all that is necessary until everything settles down for another precision shot. Why make it louder for you and other shooters close to you? A good target crown is all that is really necessary unless you plan on suppressing in the future.

I have a PRI adjustable on my precision .308 (Fulton Armory Criterion barrel, .936 gas block seat) and it works great. It does not spontaneously self-adjust. In fact, the carbon from being shot infuses itself through the threads of the adjustment screw (if you don't do much adjustment once you've gotten it dialed in) and locks it in place. No need for any type of adhesive for locking the adjustment screw in place.

 

[InkedIan]

I was second guessing myself on my comment earlier. I found some interesting videos that may prove my theory wrong. I've never had any negative effect on accuracy but this makes me think it's possible because of the pressure of the air being pushed out of the barrel by the bullet as it leaves.

High Speed Video of 50 Caliber from Barrel - YouTube

Slow Motion Schlieren Imaging of Gun Shot Intermediate Ballistics - Aimed Research - YouTube

1 Million FPS Slow Motion video of Bullet leaving barrel - YouTube

 

[mosquitoshooter]

I was second guessing myself on my comment earlier. I found some interesting videos that may prove my theory wrong. I've never had any negative effect on accuracy but this makes me think it's possible because of the pressure of the air being pushed out of the barrel by the bullet as it leaves.

High Speed Video of 50 Caliber from Barrel - YouTube

Slow Motion Schlieren Imaging of Gun Shot Intermediate Ballistics - Aimed Research - YouTube

1 Million FPS Slow Motion video of Bullet leaving barrel - YouTube

Very cool videos! I'm gonna try to prove or debunk this theory when I get it built. I will test both ways and report back. Thanks for the help

 

[InkedIan]

Very cool videos! I'm gonna try to prove or debunk this theory when I get it built. I will test both ways and report back. Thanks for the help

You more than likely get a POI shift with adding a brake, but will it affect the accuracy of your rifle idk.