Jump to content

Best barrel length for .300 BLK pistol?


Recommended Posts

Mine is 10.5" it works great. I wouldn't mind it being an inch shorter. When you add a suppressor (6-8") you'll be at normal rifle length. You don't gain much velocity with an inch so I'd vote for the best deal you can get between 9"-10"

I got a really good deal on my barrel from Alpha Shooting Sports. It was on sale for $125 or something close. That's why I chose it.

If I had unlimited funds I'd probably get a Noveske 10.2"
Link to comment
I have the 9" AAC upper. It eats everything I feed it including some 175gr subsonics that most folks seem to have feed issues with. I have a YHM Stainless 7.62 Phantom suppressor and it works well. The can is 28 ounces and is tough to hold for long on any of my 16" Blackout guns.
Link to comment

Mine will be running a 9.5" barrel.

 

What barrel are you going with?

 

I've thought about a core15.com 9.5" but it has a 1:8 twist.  Should I be concerned about the 1:8 with heavy subsonics?  I typically use the 225gr Hornady in my 16" and it shoots great.

Edited by samson7x
Link to comment

I have a YHM Stainless 7.62 Phantom suppressor and it works well. The can is 28 ounces and is tough to hold for long on any of my 16" Blackout guns.

 

At the NRA show, they told me they will have a titanium QD version of that suppressor out by year's end.  I wish I could get the paperwork started on it now!

 

I run a 10.5 Alpha like Lumber_Jack, for the same reason.  I had an early AAC barrel in 10, but I had a squib and ruptured it.  I decided I would use a cheaper barrel from now on because of that possibility. 

Link to comment
  • 4 months later...

Ignore my initial statement about eventually getting a suppressor. Let's assume the only thing to be attached to the end of the barrel will be a Noveske KX3 (pig), if that even changes anything. 

 

The idea of going with a pistol is to keep it as small as possible. Something that will easily fit into a backpack would be nice. Reliability is also important, of course.  Has anyone with a 8.5" or 9" barrel noticed any issues with ammo? I would like the ability to use subs to supers, if at all possible. Am I asking and expecting too much? 

Edited by TripleDigitRide
Link to comment
[quote name="TripleDigitRide" post="1044914" timestamp="1381115050"] Ignore my initial statement about eventually getting a suppressor. Let's assume the only thing to be attached to the end of the barrel will be a Noveske KX3 (pig), if that even changes anything. The idea of going with a pistol is to keep it as small as possible. Something that will easily fit into a backpack would be nice. Reliability is also important, of course. Has anyone with a 8.5" or 9" barrel noticed any issues with ammo? I would like the ability to use subs to supers, if at all possible. Am I asking and expecting too much?[/quote] Honestly, with pistol length gas, adjustable block, AND a pig, you should be able to shoot any length you want that's commercially available. (Even without the pig, but gas block might need more adjusting) I would look at all available. Core15 - 9.5" Noveske - 8.2" Alpha Shooting Sports - 8.1" CMMG - 8.5" AAC - 9" Rainier Arms - 8.5" (several options) Availability varies, some are in stock, some aren't. Also if you buy a Noveske it should come with a non-adjustable block, but should run both subs and suppers (according to them), I'd put a pig on just for added pressure (and looks :D) Edited by Lumber_Jack
  • Like 1
Link to comment

I have an 8.5" McGowen on order to build my 300 BLK pistol when our uppers and lowers get in. Mine will be threaded as I plan to shoot it mostly suppressed.  I went with 8.5 to keep it as short as possible with the suppressor on it, but yet from what I read allow it to function properly if it isn't.  I hope to have everything up and running by the end of the year.

Link to comment

Anyone know how much additional length the Pig adds to the overall length?

 

About 2.5".

 

I would suggest running an adjustable gas block regardless of what configuration you have or caliber you have. A lot of guns these days are over gassed and the easiest and cheapest cure for that is an adjustable gas block. Here is a write up on the issue of over gassed guns:

http://www.tngunowners.com/forums/topic/56496-over-gassing-an-ar-and-the-problems-is-causes/

 

An adjustable gas block is not only about being reliable but also about recoil. A lot of recoil from an AR comes from the bolt and buffer hitting the back of the buffer tube. If you adjust the gas system so it barely hits the back of the buffer tube the recoil will be recduced. It also helps with reliability because a properly gassed gun also runs cleaner because the bolt remains locked longer and doesn't unlock until the pressure drops inside the barrel.

Link to comment
They add weight and dialing back the gas will reduce the felt recoil just the same.

Use standard parts first that way you don't end up with a upper or lower that will only work with its mate. The best thing about the 300 is you are supposed to be able to toss any upper on any lower and have it run.
Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

TRADING POST NOTICE

Before engaging in any transaction of goods or services on TGO, all parties involved must know and follow the local, state and Federal laws regarding those transactions.

TGO makes no claims, guarantees or assurances regarding any such transactions.

THE FINE PRINT

Tennessee Gun Owners (TNGunOwners.com) is the premier Community and Discussion Forum for gun owners, firearm enthusiasts, sportsmen and Second Amendment proponents in the state of Tennessee and surrounding region.

TNGunOwners.com (TGO) is a presentation of Enthusiast Productions. The TGO state flag logo and the TGO tri-hole "icon" logo are trademarks of Tennessee Gun Owners. The TGO logos and all content presented on this site may not be reproduced in any form without express written permission. The opinions expressed on TGO are those of their authors and do not necessarily reflect those of the site's owners or staff.

TNGunOwners.com (TGO) is not a lobbying organization and has no affiliation with any lobbying organizations.  Beware of scammers using the Tennessee Gun Owners name, purporting to be Pro-2A lobbying organizations!

×
×
  • Create New...

Important Information

By using this site, you agree to the following.
Terms of Use | Privacy Policy | Guidelines
 
We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.