For Things That Go Bump in the Night- Suppressed 300 Blackout SBR Custom Build

[fedupflyer]

Are you waiting for a stamp on a can or haven’t gotten that far along?

No, I have all of the tax stamps and the suppressor in hand.
I am just doing a break in with chicken bones, fairy farts and tears of a virgin liberal.

Work and weather have gotten in the way of playing with my toys and I was trying to run the upper fairly hard before I start monkey with it. Think I might have about 100 rnds through it now.
Once I am satisfied with it overall ability I am gonna run some accuracy test at 100yds to see what it will do, then I will swap the current muzzle device for the dead air keymod and see how much I disturbed the accuracy.
Once that is done, I plan on running it in at least two 3-Gun outlaw style matches so that I can verify it runs like it is supposed to with the suppressor attached.
Then I can accept it as a HD gun.

Not OCD at all.

[Diamondback]

No, I have all of the tax stamps and the suppressor in hand.
I am just doing a break in with chicken bones, fairy farts and tears of a virgin liberal.

There are still a few of those around? O.O

Nice build, RTT! Just out of curiosity, does subsonic .300 get any benefit from a longer barrel? I'm toying with the idea of Blackout spare URG's for the 10.3" pistol I'm building and a 12.5" I'm penciling out...

You guys make me jealous, living in free places where you can actually USE magazines in your range testing, unlike my little slice of Fuddtard Hell.

[officerX]

There are still a few of those around? O.O

Nice build, RTT! Just out of curiosity, does subsonic .300 get any benefit from a longer barrel? I'm toying with the idea of Blackout spare URG's for the 10.3" pistol I'm building and a 12.5" I'm penciling out...

You guys make me jealous, living in free places where you can actually USE magazines in your range testing, unlike my little slice of Fuddtard Hell.

From my research 9” is the sweet spot. Which is why AAC made one that length, and why I bought it!

[RobertTheTexan]

There are still a few of those around? O.O

Nice build, RTT! Just out of curiosity, does subsonic .300 get any benefit from a longer barrel? I'm toying with the idea of Blackout spare URG's for the 10.3" pistol I'm building and a 12.5" I'm penciling out...

You guys make me jealous, living in free places where you can actually USE magazines in your range testing, unlike my little slice of Fuddtard Hell.

I may be wrong, but I believe a 9” barrel achieves close to full powder burn with subsonic 300. So if you’re wondering if there’s better accuracy to be had with a barrel longer than that, maybe, but I don’t think so. But I may be wrong. What I know is that the 300 subs’ sweet spot is a 100 yds and less. So at 100 yards I can hit my 8” plate all day. I get 75% hits on my 6” plate. If I bring that in to 50yd as I did today, I don’t really need to hold over, it was pretty dialed in all the way to 25 yds. Now if you step out to 200, your looking at around a foot or so of drop, 250-300 it climbs up to about 35”-39” of drop. Could you still do some damage? I suppose but it reminds me of lobbing 40mm grenades out of a M203 launcher. I haven’t measured the bullet drop of my subs out to 200 and 250, but those numbers are consistent with the research I’ve done. Supers are a different story as you already know.
Pack your grip, load granny in her rocker on top of the truck and move to a free state.


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[RobertTheTexan]

There are still a few of those around? O.O

Nice build, RTT! Just out of curiosity, does subsonic .300 get any benefit from a longer barrel? I'm toying with the idea of Blackout spare URG's for the 10.3" pistol I'm building and a 12.5" I'm penciling out...

You guys make me jealous, living in free places where you can actually USE magazines in your range testing, unlike my little slice of Fuddtard Hell.

You’ll find a lot of guys also running 7.5” and like me 8” barrels on the 300. Guys that KNOW stuff. That leads me to believe that there just isn’t a lot of accuracy to be gained from 7.5” to 9” or 8” to 9” especially at 100 and less with subsonic ammo. But if I’m smokin crack on that - someone just tell me. OfficerX is correct, AAC would know since they gave birth to the 300BLK.


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[Iraqgunz]

I'd be staking the castle nut/endplate if it were me.