Q&A Ballistic Advantage E:14 - .300 Blackout Barrel Dwell Time

In this episode of Q&A with BA: Clint answers an excellent question about dwell time and Sarah startles Clint with the growing intensity of her fall fever!
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Have you seen our previous video? E:13 - The Best 18” .223 Wylde Barrel • Q&A Ballistic Advantag...
Other Q&A with BA Videos:
E:1 - BA Pencil Barrel Offerings • Q&A Ballistic Advantag...
E:2 - Taper Pins vs. Coil Pins • Q&A Ballistic Advantag...
E:3 - Gas Block Location • Q&A Ballistic Advantag...
E:4 - Barrel/Buffer System Combo • Q&A Ballistic Advanatg...
E:5 - Barrel Harmonics with Pinned LoPro • Q&A Ballistic Advantag...
E:6 - Adjustable Gas Blocks on BA Barrels • Q&A Ballistic Advantag...
E:7 - All About the BA Hanson??? • Q&A Ballistic Advantag...
E:8 - When to Replace Rifle Parts • Q&A Ballistic Advantag...
E:9 - 5.56 Nato or .223 Wylde??? • Q&A Ballistic Advantag...
E:10 - Where to Use Loctite • Q&A Ballistic Advantag...
E:11 - 9mm Barrels, Modern Series Only? • Q&A Ballistic Advantag...
E:12 - Pumpkin Spice Target Crowns • Q&A Ballistic Advantag...
Thanks for watching!

[@BeanoNoir]

Cartridge chamber pressure is the same (SAAMI 55,000psi), there is simply a larger volume in the bore due to the larger caliber. This means for every inch of bullet travel, the volume increases significantly faster than a .223 cal barrel. A larger volume occupied by a similar amount of gas results in significantly lower pressures behind the bullet as it travels the length of the barrel. That is why the gas is harvested earlier in the barrel where the pressure is nominally closer to where it would be in a .223. The not often mentioned benefit is a reduction in wear on Gas blocks, keys and rifling due to the lowered pressure related erosion. I know this is essentially what you were saying, but some could misconstrue that there is significant headroom when reloading this cartridge, where there definitely is not.

[@nemsisbusa]

“Cocaine is a hell of a drug” Rick James

[@honkyheath]

More Sarah videos, please

[@chrissheathewoodguy]

ok, question time, you sell a 16 inch barrel with a carbine gas port. so will this help with making the fire arm shoot softer or better. trying to make a pick to order.

[@ClangandBang]

Y’all answered my question and then some, thanks! As far as fall goes, Alabama hasn’t gotten the memo that fall has started. I will be super excited when it does, maybe not as much as Sarah, but close. To me fall means football (War Eagle), cold weather, hunting season, bonfires, and jackets (for bigger handguns.) Y’all are awesome, keep up the good work.

[@BallisticAdvantage]

Hey there! Thanks so much, we are so glad that you found this answer helpful! 😊 Please shoot me an e-mail with your contact info so that we can send you some fun stuff! [e-mail]

[@ClangandBang]

Ballistic Advantage email is sent. 👍🏻

[@MrEunderwood]

Weagle Weagle!! What buffer weight are you running?

[@paulgvb4]

Yes I’m decorating with squirrels.

[@cudan2941]

😂😂

[@gsmithy7995]

@ballistic advantage hopefully you can help I have the 8.5 modern 300 blackout barrel and shooting 135 gr fiochi it will not lock the bolt back I have it on a faxon upper with a adjustable gas block wide open with a mill spec buffer and spring, yet it will cycle with 110gr reloads with 18.4-18.9-19.4gr of win296 I don’t want to touch the gas port if I don’t have to . I’m kinda at a loss since I have a 10.5 BCA pistol barrel that will cycle subs which this will not

[@glock23fan50]

Just stay with 1 or 2 bullets weights 125,135, or 147. I cut 4 coils off my buffer spring for similar issues and not mess with gas block and its kicking... Good luck , just late to the party lol

[@bartowpd342]

New to 300 blk, what’s the best barrel length. Personal defense and not hunting.

[@rickg3317]

I’m celebrating by building my first 300 blk AR using the 14.5” BA barrel that I bought a few weeks ago 😃

[@AlphaRomeoOneFive]

Good on you Rick! That's exactly how you celebrate it right there!

[@harleysoftail7107]

What’s the best-meaning better terminal ballistics, 556 grain weights, high pressure rounds-a 16 inch stainless steel BA barrel can handle without misfunctioning? 77 grain 556 too much pressure for 223 Wylde??

[@Watup4430]

Is a barrel break in necessary or is it nothing to worry about?

[@BallisticAdvantage]

Hey Kaden, great question! Make sure to keep watching and see if Clint answers 😊 -Sarah @BA

[@ChristopherTenney]

Where can I learn more about fine-tuning rifles? I have problems with arthritis and shoulder issues and want to find tune my different rifles to make them easier to shoot by reducing recoil and muzzle slip. I e different Power recoil springs vs buffer weights vs. lower Mass bolt carrier groups vs. adjustable gas blocks, Etc thank you. PS the majority of my barrels are ballistic advantage.

[@BallisticAdvantage]

Hi Christopher! Thanks so much for this fantastic question. Clint and I were unable to answer this one... but it just so happens that Batman and Robin made a special appearance for our Halloween episode last week and they answered your question! In case you haven't seen it yet- kzbin.info/www/bejne/b5OslWyGr66IfJo

[@BallisticAdvantage]

We hope you find the answer helpful! Also, please send me an e-mail with your contact info so that I can send you some fun stuff! [e-mail]

[@nerilionel2877]

Are you guys planning on making 300 HAMR barrels?

[@gregdepot]

Did you imply that would offer a superlative gas block factory pinned? Also curious on your thoughts of at ear DB changes from just a buffer change out if you have any suppressed at ear metering experience. The gun in question is a 13.7 .750 Hanson barrel, it seems to be conservatively gassed currently there is a Dead Air Sandman K on it. Sorry for the ultra specific question when things are case by case.

[@BallisticAdvantage]

Hey Greg! Thanks for the great question- we don't specific at all! Keep watching to see if Clint answers 😊 -Sarah @BA

[@FNPNick]

I'm getting a 16" 300 BLK barrel from you guys. What buffer weight and spring weight do you guys recommend with it? I have a FA BCG I'm putting in it.

[@SteakLavaTumsSword]

So I get the big reasons for pistol gas on 300blk barrels are reliability and accounting for range of projectiles/loads (subs/supers), but if one knew for certain they would only be using supers, on say an 11.5" or 12.5" barrel, would a carbine gas system be on the table, or is that still in the territory of potentially finicky?

[@BeanoNoir]

Carbine length tend to only be finicky in my experience when using subs with lower than 200grn bullet weight, or if using commercial ammo, lower than 220 grn bullet weight. There is more than one way to tune a fiddle, going pistol length is just the easiest.

[@gsmithy7995]

Well I’m open for suggestions the 8.5 modern pistol barrel I just got won’t cycle 135gr suppers or 200 gr subs

[@SteakLavaTumsSword]

@@gsmithy7995 smear peanut butter on the bolt

[@AlphaRomeoOneFive]

I love my 8.3" 300blk Hanson barrel. Hands down my favorite gun I own! Great video and question/topic as usual!

[@BallisticAdvantage]

Thanks bud! -Sarah @BA

[@shizims]

Do you run it suppressed? What weight buffer?

[@AlphaRomeoOneFive]

@@shizims I believe it's just a standard 3oz buffer, can't remember for sure. From everything I've read and personally experienced with BA Hanson barrels, their gas ports are on point so buffer weight isn't as huge of a deal. It's cycled everything perfectly from 110-220 grain. I'm running a Dead Air Sandman S can on it, it's a nasty little setup!

[@dabonehead101025]

How was the reliability with the various loads? How was the accuracy and range of that barrel? I just purchased it and I’m starting to second-guess myself for not purchasing a 10.3 inch barrel.

[@AlphaRomeoOneFive]

@@dabonehead101025 I haven't tried shooting it past 100 yards. Otherwise, accuracy is great out of it.

[@chupacabra304]

Looking into one of these for an upper, and good on the marketing team gal for her enthusiasm

[@evanr.6171]

Will the Superlative Arms Bleed Off gas block cause a decrease in velocity?

[@BallisticAdvantage]

Hi Evan, great question! Make sure to stay tuned and see if Clint answers 😊 -Sarah @BA

[@SweatyWelder68]

I normally run Faxon but back in the day when shit was hard to obtain I ended up with a Ballistic Advantage barrel and it is the Bees knees!!!Bad ass!16" pencil..

[@jaimecortez3601]

Clint what's the gas port size on a 8.5" BA performance barrel and what buffer should i use?

[@christopherpeppers278]

Can we get a 13.7 Hansen profile 300 black out barrel, please?

[@gregdepot]

Christopher Peppers i have the 5.56 version its an interesting length in my case as an SBR

[@danny12904]

What buffer weight 10.5 300blk

[@noretreat2074]

Keep watching to see if I ask a question

[@skotrod]

The crazy ones are the best ones!

[@randyrichardson4364]

8.6 creedmoor barrels in the works?

[@BallisticAdvantage]

Hey Randy! Thanks the question- keep watching to see if Clint answers 😊 -Sarah @BA

[@bigger62265]

Can anyone confirm the gas port hole on the 6" 300aac modern series barrel? Did he say ".110 or a little smaller"?

[@josh2711]

That is what he said. Is your build locking to the rear? I’m having trouble with my 6 in

[@bigger62265]

@@josh2711 Thanks Josh, yes it’s cycling but it’s sort of hit or miss and I def need some more range time with it. .110 should be more than a sufficient size which is also a head scratcher. I installed the 6” with an AP gas block and pistol length tube. Im also using a VLTOR A5 buffer/stock set up. I only shot it suppressed with sub rounds. It would cycle sporadically, sometimes correctly feeding the next round sometimes not. It was about 50/50 on final round bolt hold open. 🤷‍♂️ My first thought was to open up the port hole a little more vs changing buffer weights, but I went ahead and put in a lighter A5 buffer that I have yet to try. I was also getting a pretty consistent ejection between 4 and 5 o’clock. It felt like the sub loads didn’t have enough juice to move the bcg with sufficient force to allow time for ejection and for the next round to properly seat itself. Another range day will hopefully be enough to get it dialed in.

[@josh2711]

@@bigger62265 I haven’t tried subs or suppressed yet, I’ve only ran supers Unsuppressed. But hearing .110 to .120 had me thinking that my gas block probably just wasn’t perfectly aligned. The AP low profile gas block needs about a 3/32 of an inch gap after the shoulder. After I got it lined up enough to lock the bolt to the rear, the AP gas block was flush if not ever so slightly protruding past the smooth barrel onto the threading. I have read that guys have better luck with clamp on gas blocks, but I was able to get the AP to work.

[@josh2711]

@@bigger62265 also I had wondered about bcg and buffers and springs. I took apart all my lowers and used a scale to find the lightest ones. I ended up with a standard PSA bcg, a sig pistol spring, and sig buffer. That still didn’t get a bolt lock for me. Now it functions with a standard PSA pistol lower, and I’m going to build an Aero lower for it at some point. The only time I lost reliable cycling was when I put my green hex mags on instead of pmags. I wanted a color difference for 300. Im hoping the cycling problem was caused by a Ruger charging handle that was tight. The handle was also difficult to install in my sig pistol and PSA pistols. Edit: the buffer was a 2.9oz carbine buffer

[@bentley4l]

Is 300 BO useless when not suppressed?

[@mobilesolutionsfl]

That chick is so animated. All channels need a woman like this!!

[@BallisticAdvantage]

Awe thanks 😊 -Sarah @BA

[@mobilesolutionsfl]

Sarah.... My bad, didn't mean to refer to you as, "This chick." I know your name now. 👊👊👊

[@medicmike4906]

Its all about the squirrels for me personally!

[@BallisticAdvantage]

haha, oh good! 😊 -Sarah@ BA

[@dirktucker77]

Sarah. I have a sister, named Sarah. You literally look and act just like her!! Not even joking.

[@DecotFamilyShooters]

Sarah says comment... we comment! We start fall with IDPA match HolidayHavoc!

[@joncardell]

She’s a live wire. Good topic, by the way.

[@BallisticAdvantage]

Haha, thank you! -Sarah @BA

[@vorant77]

The silliness is strong with that one....

[@BallisticAdvantage]

D Gatch, hey there! I know... I just can't help it 😊 -Sarah @BA

[@275Vet-RLTW]

Hunting deer!

[@humorlessclown]

I watched like 5 of these straight through and I never even wanted to build and fine tune a rifle to the bullet it’s firing before... but now I do and totally will if that keeps more of these hilariously adorable videos coming. “Do you know any 250 lbs vegans???” 🤣🤣

[@georgeshorter142]

I’m drinking dry squirrels 🐿

[@jasminebebe3455]

I know why you hired her....

[@SweatyWelder68]

COFFEE GIRL IS ANNOYING BUT THOSE BARRELS ARE DOPE N A MUG!

[@solomike68]

You know the little one is the most dangerous

[@elwhastrummer]

Too much coffee..? Definitely entertaining though.

[@BackwardTravisty]

"Every sheath needs a sword." Game of Thrones

[@RBWVETDOC]

Ur adorable. The fella with the beard too...

[@shojus]

Stay FIRSTY my friends!

[@scottto7074]

Ya can't watch this lady....

[@trevorhenderson3349]

You both need to go get a room before making a video. Dang.

[@olddirtybooger]

Heavy metal halloween show is my favorite way to celebrate fall.