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building my 1st AR 308


dbwalker

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Hi all,

well I have been researching & planning my 1st 308 for over a year & I finally broke down & dropped the cash, I'm building the lower from a Juggernaut tactical lower & the upper will be coming from JP rifles, a duel charging upper reciever with an 18" barrel, with the exception of the lower receiver everything is pretty much all JP stuff, topping it off with a Vortex 6-24x50 PST scope, I decided to go at this build with absolutely no budget & just get what I want, been working to hard for to long to not treat myself on this one.

 

a question to all regarding ammo, what are you running & what do you like about it, what ammo have you had problems with, this rifle will be mostly a bench gun reaching out as far as I can & occasional hunting gun, but quite often I just want to have fun shooting cheaper plinking ammo like I do on my ar15s, so I'm now researching ammo for the rifle, looking to load up on some cheap yet reliable plinking ammo & also load up on quality long range ammo.

 

thanks for any & all input

DB

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Welcome to the forum DB. Ammo selection is a process we all have to go through to find out what each barrel likes. Most people tend to agree the Federal Gold Medal Match 168gr is a good choice. Do you reload or will you be buying off the shelf ammo?

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Welcome from Iowa. Here is some better priced quality 175 grain stuff;

 

 

http://usarmorment.com/ammunition-c-1/308-762x51-c-1_227/federal-gm762m2-762-175-gr-sierra-match-500-round-case-p-2303.html

 

https://www.targetsportsusa.com/federal-gold-medal-308-win-ammo-175-gr-smkhp-gm762m2-p-3017.aspx

 

https://massammo.com/massammo.com/american-eagle-7-62x51-175gr-xm118lr-500-round-case-loose-pack/

 

Here is some remanufactured stuff from Freedom Munitions, about as cheap as you can get 175 SMK's;

 

https://www.freedommunitions.com/308-Win-175-gr-HPBT-Match-p/fm308h175r-c0480.htm

 

I shot my best group ever with a batch of this I got last summer but the latest batch hasn't been as good, could be just me though.........

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Welcome from AZ !

The scope you are choosing is very nice ! JMHO stick with the 168gr bullets.

 

I had been considering Millett & Sightron but I have a Vortex Viper 6.5-20x44 and have been so happy with it I decided to stick with the brand

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Hi all,

well I have been researching & planning my 1st 308 for over a year & I finally broke down & dropped the cash, I'm building the lower from a Juggernaut tactical lower & the upper will be coming from JP rifles, a duel charging upper reciever with an 18" barrel, with the exception of the lower receiver everything is pretty much all JP stuff, topping it off with a Vortex 6-24x50 PST scope, I decided to go at this build with absolutely no budget & just get what I want, been working to hard for to long to not treat myself on this one.

 

a question to all regarding ammo, what are you running & what do you like about it, what ammo have you had problems with, this rifle will be mostly a bench gun reaching out as far as I can & occasional hunting gun, but quite often I just want to have fun shooting cheaper plinking ammo like I do on my ar15s, so I'm now researching ammo for the rifle, looking to load up on some cheap yet reliable plinking ammo & also load up on quality long range ammo.

 

thanks for any & all input

DB

 

 

hello, i built an AR15 using 2 Juggernaut uppers - a 5.56 and a 6.8, and built a Juggernaut lower. be aware you may run into some difficulty with their gear. other lowers will not fit the uppers in the AR15 versions, altho Juggernaut claims "milspec". the only pistol grip that would fit without alot of filing,carving, screwing around with is DPMS. you may also need shims to "clock" the rails. also the rails do not true up with the upper, i.e. both rails were an RCH proud of the upper.

 

that being said, they do produce beautiful machine work,,,just be aware you may need to do some smithing to make it all work and look good,,,and from what i experienced all of their stuff is proprietary even tho they claim "milspec". perhaps the AR10 is different. I disassembled everything built using Juggernaut except the lower and sold it all. for the price you pay you could use Mega Arms and have money left over,,,an inexpensive Anderson lower will fit all my AR15 Mega uppers. just a heads up, your mileage may vary

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  • 1 month later...

update:

I finally got started on the lower a couple days ago, ran in to a couple speed bumps with the Juggernaut jig kit but in the end it is now a 100% lower, I just finished test fitting most of the lower parts & fitting it to the upper, the JP trigger is just a hair snug in the trigger cavity "easy fix" going to sand it a bit with some 220, the JP duel charge upper fits extremely snug to the lower "rear take down pin was a bit tough to get through the first time" I would call that a good thing myself, no gaps at all. the JP silent capture spring fits great without using the retaining pin, when charging both chargers it feels very smooth & the trigger is very short & clean after adjusting it.

so far so good, hopefully it stays that way after the paint process, I picked up a couple cans of dura-coat od green that I'm going to paint the hand guard & lower /upper receivers with

still waiting on the scope from Optics Planet "back ordered" they say it should be there on the 24th

I picked up quite a bit of ammo "thanks all for the input" a 100 rounds each of a four different brands of match grade good stuff varying in 168 grain & 175 grain, also 400 of some Norma USA 150 grain for plinking fun

, I will update more as this gets finished up & hopefully be giving a range report in a couple weeks.

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