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10/4/2016 12:17:43 PM EDT
I have the PSA (colt mag) lower on order.  i plan on building a pistol, but could also do a rifle....dependent on the expectation of accuracy.

So with a 9mm build, if i wanted good groupings at 50yrds, what length barrel do I need?  

I may or may not get a suppressor for it later.  I assume that with a can I need a shorter barrel though.



10/4/2016 1:18:13 PM EDT
[#1]
There is a great thread here in the last 6 months where a user did some scientific accuracy testing.  Look for it.  I'd link it but I'm on my phone.  

I have a
1. Relatively new build with a 10 inch barrel (SBR).
2. Inexperienced shooter
3. Red dot, non magnified
4. Good ammo.

I can put rounds in about 1 inch at 25 yards if I do my part.  I'm sure someone better (hell, just about anyone else) can do the same or better.
10/4/2016 2:52:51 PM EDT
[#2]
Quoted:
I have the PSA (colt mag) lower on order.  i plan on building a pistol, but could also do a rifle....dependent on the expectation of accuracy.

So with a 9mm build, if i wanted good groupings at 50yrds, what length barrel do I need?  

I may or may not get a suppressor for it later.  I assume that with a can I need a shorter barrel though.



View Quote




I run a 5.5" Ballistic Advantage barrel and get fist sized 10 shot groups off had with Federal red box 115 FMJ and a Vortex Razor Red dot at about 35-40 yds
10/4/2016 4:21:39 PM EDT
[#3]
I am leaning toward the 5.5" ballistic advantage barrel.  That or the psa 7.5".  I IM'd ballistic advantage a couple of questions.

Going to do a little more reading.
10/4/2016 7:47:38 PM EDT
[#4]
balloo93... my 16" 9mm PPC has a nitrided barrel of unknown manufacture with about 600 rounds through it... with factory Win Ranger Lawman 147 flat point, will put 5 shots under 1 3/4" at 50yd...using a Vortex Spitfire 1x and a factory trigger
10/5/2016 1:21:38 AM EDT
[#5]
Quote History
Quoted:
balloo93... my 16" 9mm PPC has a nitrided barrel of unknown manufacture with about 600 rounds through it... with factory Win Ranger Lawman 147 flat point, will put 5 shots under 1 3/4" at 50yd...using a Vortex Spitfire 1x and a factory trigger
View Quote

Where'd you get the barrel?
10/5/2016 1:35:07 AM EDT
[#6]
~1.5" at 50yd:for 9mm steel cased ammo

go to 4:30

10/5/2016 9:00:03 AM EDT
[#7]
Russell... came from MAS Defense
10/5/2016 9:42:50 AM EDT
[#8]
Quote History
Quoted:
I am leaning toward the 5.5" ballistic advantage barrel.  That the psa 7.5".  I IM'd ballistic advantage a couple of questions.

Going to do a little more reading.
View Quote

IM replied.

-Tony @ BA
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