Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
Native Establishments, GregP, rufusone1, Walker_clint, brisket
62006 Registered Users
Top Posters
dogcatcher 81860
stxranchman 52092
RWH24 44568
rifleman 44194
BOBO the Clown 42274
BMD 40617
bill oxner 38696
Big Orn 37484
txshntr 34383
sig226fan (Rguns.com) 31256
facebook
Forum Stats
62006 Members
46 Forums
430359 Topics
5932388 Posts

Max Online: 16728 @ 03/25/12 08:51 AM
Topic Options
#6094525 - 12/21/15 08:54 AM 300BLK Sub-Sonic Accuracy?
dredd Offline
Tracker

Registered: 04/26/10
Posts: 929
Loc: Dallas / Fort Worth Area
What would be considered an acceptable accuracy for the 300BLK in an AR Platform?

My latest batch netted about 1.25" groups at 80 yards.
(20 to 80 yards is my current "Kill Zone" for this application)

Details:
AR Platform
16" Barrel with .125 Port
Carbine Length Gas System
Omega Suppressor

200/gr Lapua Sub-Sonic Boolits moving at 1050/fps
Loaded .031 off of the lands.
H4198 Powder
Home Made Brass (all Winchester and Annealed before sizing)

Shooter Error... (Excuses)
It was a bit windy Saturday. LOL

I really don't know what would be considered an obtainable accuracy for this application.
This is my first venture into Sub-Sonics.

It's not like I have much room to play with FPS like I normally would developing a Super Sonic round.

It will hit a pig in the head at that distance.

Do I call it good, or keep playing with it?

I do not feel like trying 20 different Powders & such.

Thanks.

Top
#6094672 - 12/21/15 10:01 AM Re: 300BLK Sub-Sonic Accuracy? [Re: dredd]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 2801
The question is it good for you. It sounds like it is. Only you can determine what your time is worth

Top
#6094860 - 12/21/15 12:05 PM Re: 300BLK Sub-Sonic Accuracy? [Re: Cleric]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 21549
Loc: Texas
Originally Posted By: Cleric
The question is it good for you. It sounds like it is. Only you can determine what your time is worth


Yup, if it is accurate enough for your intended purposes with the gun and ammo load it up and have fun
_________________________
Guidelines / Rules of Conduct
http://www.texashuntingforum.com/rules.htm

RULES for using the TRADING POST
http://www.texashuntingforum.com/forum/u..._PO#Post1959111

Top
#6095933 - 12/21/15 11:51 PM Re: 300BLK Sub-Sonic Accuracy? [Re: dredd]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 10820
Loc: Lewisville, TX
I tell my customers if the sub sonic ammo shoot 1.5" or better at 100, then that's good. I have shot a few 1/2" groups with a tuned sub sonic load, though, so they can be made to shoot better. Shooting out of a bolt gun is easier to get the accuracy. AR's you have to use the right powder to get it to also cycle. Subs are a heavily reduced load to make a certain speed, and can be a little finicky on what they like. You are taking an efficient round, and making it inefficient as a sub load. There are a few tricks to getting them to work better, though.
_________________________

www.DallasReloads.com
Type 01 and Type 06 FFL

Top
#6096008 - 12/22/15 05:32 AM Re: 300BLK Sub-Sonic Accuracy? [Re: dredd]
dredd Offline
Tracker

Registered: 04/26/10
Posts: 929
Loc: Dallas / Fort Worth Area
Thanks for the numbers, Chad.

I didn't know if I was way off target or acceptable average.

Everything functions correctly with this current load and seems to be shooting clean.

I didn't want to mess things up chasing an unreasonable goal.

Top



© 2004-2016 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide