Thursday, March 20, 2014

Savage 110 Custom Build



  • Savage 110 long action, polished raceways
  • PTG fluted bolt/extended baffle/tac handle
  • McGowen 20" barrel .308win
  • NSS nut and recoil lug
  • HS precision stock glass bedded to action
  • CDI bottom metal with AICS mags
  • Acu trigger (2lbs)
  • EGW 20moa mount, glass bedded to receiver
  • Vortex PST 4-16x50/vortex precision rings/switch view
  • Harris bipod

Accuracy with very old 175FGMM

Monday, March 17, 2014

MEGA 308 Barrel Review


I've been in the pursuit of a good 308 AR barrel for a while, trying to find the balance between budget, reliability, weight, and accuracy.  I've been through a few barrels, got rid of some for good reason, and not as good for others.


My most recent barrel was a Fulton Armory Titan 18.5" chrome lined lightweight barrel.  It had most of the features I wanted; rifle length gas system, 18.5", chrome lined for reliability, and very light 2lbs6.5oz.  It shot well enough for military standards, but I wanted to squeeze a little more accuracy out of my AR while still maintaining reliability.

Mega Recently came out with their line of 308 barrels that have a Sub MOA accuracy guarantee at 100yrds with match grade ammo.  What did I have to lose?  It was roughly the same price as the previous Fulton I had, and if it didn't shoot well enough, I could get my money back.  I decided to go with the 16" to try and match the weight of the fulton, and had to compromise on going back to a midlength gas system, which would be worth it if the accuracy improved.

Some Initial Observations:

After the barrel arrived, I looked it over.  One thing I noticed was the PRI adjustable gas block fit a little looser than I would have liked.  It was tight on all of my previous barrels, so I'm not sure if that will cause any future issues.

Another thing I noticed was that it fit pretty easy into my MEGA upper receiver.  I would have liked a little tighter fit as well (similar to JP where the have to freeze the barrel, heat the receiver to get things to fit).  It may not be a big deal, but just an observation.

While getting ready to assemble the rifle, I checked the headspace on my DPMS bolt. Dang! closed on the NO-GO Gauge.  I checked the bolt against the Fulton barrel, which headspaced fine.  I called MEGA and talked to one of their technicians, and they recommended picking up another bolt to verify the potential headspace issue.  I had been eyeballing a JP enhanced bolt for a while, so this was a good enough excuse to pick one up.  $165 and a few days later, I had the JP in my hands.  I checked the headspace, and it gauged fine with the MEGA barrel, sigh of relief.  (Interesting note, I couldn't get the JP bolt to close on the GO gauge in the Fulton barrel).  This makes me realize how much variability there can be while building these rifles, and how important it is to check these critical dimensions.

Range Review:

After getting everything together, I wanted to take it to the range and get some baseline data with some 175gr LC matchgrade ammo, as well as challenge the sub-moa guarantee MEGA had.  My scope was dialed in for the previous Fulton 18.5" barrel, so I figured it would still be pretty close with the shorter MEGA barrel....wrong.  I was shooting 16-18" higher than before.  This was pretty surprising since zero shift shouldn't have changed too much, but a few clicks on the scope got back on target.  I will be curious to chrono this barrel and see how it compared to the Fulton (not sure how the melonite coating will affect velocity)

I shot 4 groups total, one which completely missed the target (shooting high), one group to get me on target, and two groups to verify the accuracy.  Target results are below.

Group-3 (100yrds, 175gr LC Match, Caldwell Front rest/Rear Sandbag)
1.24MOA





Group-4 (100yrds, 175gr LC Match, Caldwell Front rest/Rear Sandbag)
0.789MOA


While I wasn't incredibly impressed with the first group, it was only slightly worse than the best group I ever got with the Fulton.  The Second group is what impressed me.  0.789MOA satisfied the MEGA Sub-MOA guarantee, so I know things should only get better with hand loads.

I will update this review when I get some more sample data and experience with this barrel, but for now, I am very happy with the purchase.  
  • Not overly expensive
  • Good material
  • Great accuracy


OD Ruger 10/22

Build Details
  • Receiver: Standard Ruger 10/22
  • Bolt: 10/22 with Volquartsen Firing Pin and Extractor
  • Charging Handle: Rimfire Technologies 1-piece charging handle
  • Trigger Group: Volquartsen
  • Stock: Hogue OD Green
  • Scope Mount: Tactical Solutions
  • Scope Rings: Warne 1"
  • Scope: Vortex Crossfire 4-12x40 AO
  • Barrel: Tactical Solutions 16", Fluted with 1/2-28 Threads
  • Bipod: Harris



MEGA BILLET AR15 Custom Build


Build Details:
  • Receiver: MEGA Billet Receiver Set
  • Bolt Carrier Group: Daniel Defense
  • Barrel: Daniel Defense Light Weight Midlength Gas
  • Gas Block: PRI
  • Flash Hider: Smith Enterprise Vortex 1001V
  • Rail: Noveske NSR 13.5
  • Stock: Magpul CTR
  • Rear Sling Mount: Noveske QD End Plate
  • Front Sling Mount: Wilson 10/2 QD
  • Grip: Magpul MIAD
  • Charging Handle: BCM Gunfighter Mod 4
  • Extended Bolt Release: Phase 5 EBRV2
  • Trigger: Geissele SSA-E
  • Front Sight: Troy
  • Rear Sight: Troy
  • Scope: Burris Vortex Viper PST 2.5-10x32
  • Vortex Switch View Lever
  • Accuracy 1st Scope Level
  • Mount: Larue Tactical LT-158 10MOA
  • Magazine: PMAG
  • Other: CMMG Stainless Evolution 22lr kit for training - See Review Here



Rock River CAR15





Build Details:
  • Receiver: Rock River Arms
  • Stock: Magpul CTR
  • Magpul ASAP Plate (for the MS2 Sling)
  • Trigger Guard: Magpul enhanced trigger guard (aluminum)
  • Grip: Magpul MOE
  • Charging Handle: BCM Gunfighter Mod 4
  • Extended Bolt Release: Phase 5 EBRV2
  • Trigger: Geissele SSA
  • Front Sight: Troy
  • Rear Sight: Troy
  • Scope: Burris XTR 1-4
  • Mount: Larue Tactical LT-104
  • Magazine: PMAG
  • Rail: Troy TRX Extreme 11.0
  • Barrel: Daniel Defense Midlength
  • Gas Block: YHM Lo-Pro
  • Forward Grip: Magpul AFG
  • Flash Hider: Smith Enterprise Vortex 1001V
  • Other: CMMG Stainless Evolution 22lr kit for training - See Review Here

MEGA MATEN Custom Build






  • Receiver: MEGA MATEN MKM Extended
  • Bolt Carrier: DPMS
  • Bolt: JP Enhanced
  • Stock: Magpul CTR
  • Noveske QD End Plate
  • Grip: Magpul MIAD
  • Charging Handle: BCM Gunfighter Mod 4
  • Trigger: Geissele SSA-E
  • Safety Selector: Battle Arms Development
  • Extended Bolt Release: Phase 5 EBRV2/308
  • Front Sight: Troy (not pictured)
  • Rear Sight: Troy (not pictured)
  • Scope: Vortex Viper PST 2.5-10x32
  • Vortex Switch View (not pictured)
  • Accuracy 1st Scope Level
  • Mount: Larue Tactical LT-112 20MOA mount
  • Magazine: PMAG 7.62
  • Barrel: MEGA .308 16" 416Stainless - See review here
  • Gas Block: PRI Adjustable - See review here
  • Forward Sling Mount: Wilson 10/2 QD
  • Flash Hider: Smith Enterprise Vortex 1000V (old style)
  • Bipod: Atlas



100yrds, 175LC Match
This is a DPMS LR-308 AP4 w/ the following Accessories/Mods:

  •  Stock: Magpul CTR
  • Magpul ASAP Plate (for the MS2 Sling)
  • Grip: Magpul MIAD w/ Grip Wedge
  • Charging Handle: BCM Gunfighter Mod 4
  • Trigger: Geissele SSA
  • Extended Bolt Release: Phase 5 EBRV2/308
  • Pins: KNS Anti walk/rotate pins
  • Front Sight: Troy
  • Rear Sight: Troy
  • Scope: Burris XTR 1.5-6x40 (w/ Hunter Turrets)
  • Mount: Larue Tactical LT-104
  • Magazine: PMAG 7.62
  • Rail: Troy Daniel Defens Lite 12" Rail
  • Barrel: DPMS AP4 reprofiled by ADCO
  • Gas Block: PRI Adjustable - See review here
  • Forward Grip: Magpul AFG
  • Forward Sling Mount: Daniel Defense
  • Flash Hider: DPMS Phantom Hider

BEFORE


AFTER