First Boomer Shooter Build

Dustin Cantrell · Sep 11, 2013

I think I might have built the first one... Picked up a barrel from Doctor JJ tonight. Drove an hour and a half each way but I was determined to build this sucker tonight.

Boomer Shooter stripped lower
PSA stripped upper
Magpul MOE rifle stock
UCWRG grip stipple by myself
AP Customs 15" handguard
Satern 18" rifle fluted barrel (get one from Doctor JJ while you can!)
Seekins Precision gas block
Geissele SD-3G trigger
BCM BCG
BCM Gunfighter ambi charging handle
Rolling Thunder comp
Primary Arms Micro Dot

Matt1911 · Sep 11, 2013

Nice piece.

DoctorJJ · Sep 11, 2013

Looks great!

jtischauser · Sep 11, 2013

Wow that was quick!

Avezorak · Sep 11, 2013

I like it...

Cajun0007 · Sep 11, 2013

Very nice!

nikatkimber · Sep 11, 2013

Sweet!

scubor2 · Sep 11, 2013

You had a busy day. Nice rifle.

Dustin Cantrell · Sep 11, 2013

I test fired it today and got a rough sight in, though only at 50 yards. I've never had an adjustable gas block before. I turned it down until it failed to strip a round once from the mag and then turned it out half a turn. I was running bulk .223 Federal. It ran great.

The brake seems to work very well. I think most of the movement of the dot when I fire is due to the bolt going into battery. Fast double taps yielded all shots into a 3" circle at 15 yards.

Should I drop a little Loctite on the set screws holding the gas block on as well as the adjustment screws?

Wall · Sep 11, 2013

Dustin Cantrell said:
Should I drop a little Loctite on the set screws holding the gas block on as well as the adjustment screws?

yes, blue

jtischauser · Sep 11, 2013

You need to open the gas block until it lock the bolt back on the last round with some cream Puff ammo like PMC. Then guve it another half turn. Then stick your rifle and ammo in the fridge and get it down to about 40 degrees and see if it still locks back. I've had two guns go single shot in sub 50 temps when I set the gas at 80-100 degrees.

dennishoddy · Sep 11, 2013

Jesse Tischauser said:
You need to open the gas block until it lock the bolt back on the last round with some cream Puff ammo like PMC. Then guve it another half turn. Then stick your rifle and ammo in the fridge and get it down to about 40 degrees and see if it still locks back. I've had two guns go single shot in sub 50 temps when I set the gas at 80-100 degrees.

Depending on the powder you use this is correct.

Some powder gains or looses velocity when shot at cold/hot temps.

Wormydog1724 · Sep 11, 2013

That's why I lay my .50 cal rounds on a flat hot rock to heat up so I can make those 1.5 mile shots. Extra velocity for more distance and whallop.

Dustin Cantrell · Sep 11, 2013

Thanks, guys. I'll pick up some blue Loctite and do a little more adjusting and testing with Jesse's methods before I use the Loctite.

jtischauser · Sep 12, 2013

You don't have to refrigerate your gun and ammo but I thought you should know what pitfalls await the adjustable gas block. It's burned me twice in big matches.