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I really like that you face lapped and bedded the barrel to the receiver. In terms of accuracy, how the barrel mates to the receive has always been the only weak point of the AR. Curious what kind of groups you'll manage with that barrel/mate combo.Finally got my SPR/DMR build all put together for matches:
View attachment 7699225Upper Reciever
Lower Receiver
- BCM M4 Upper Receiver
- BCM BCG MPI Auto
- BCM MCMR 15”
- 18” 1:7 Douglas SPR Contour CLE Match Chamber
- Superlative Arms 0.75” AGB Bleed-Off Solid
- Rifle Length Melonited Gas Tube
- Area 419 1/2-28 Hellfire Adapter
- TBAC DOMINUS-CB
- Upper Receiver face lapped and barrel bedded with Loctite 620
Optics
- SBR’ed Lower
- Magpul UBR Gen 2
- Carbine Spring
- H2 buffer
- Larue MBT
- Surefeed Mags
- Badger Ordnance COMM 34mm 20moa Tan
- Badger Ordnance COMM J Arm Tan
- Badger Ordnance COMM Micro Sight Mount Plate
- Aimpoint H2
- Nightforce ATACR 4-16x42 MIL-C
Thanks, I was pretty surprised how uneven the receiver face was from anodizing. I chose Loctite 620 because it’s a high strength, high temp resistant retaining compound. Specifically designed for bonding cylindrical parts.I really like that you face lapped and bedded the barrel to the receiver. In terms of accuracy, how the barrel mates to the receive has always been the only weak point of the AR. Curious what kind of groups you'll manage with that barrel/mate combo.
Only thing I would add to your already insanely nice build is a bubble level or anti-cant device, it starts to make a difference past probably 400 yards. I recently switched to the Accuracy First one. Can't recommend it enough.
I like that pad you put on the Magpul UBR (I'm a huge fan of that butt stock)... does it get in way of the charging handle at all? Looks like its clear of the pull range. I might have to add one of those to mine.Finally got my SPR/DMR built and all put together for matches:
View attachment 7699225Upper Reciever
Thanks, got some 1/8” thick foam padding from Michaels and secured it with E6000 glue. It does not get in the way of the CH.I like that pad you put on the Magpul UBR (I'm a huge fan of that butt stock)... does it get in way of the charging handle at all? Looks like its clear of the pull range. I might have to add one of those to mine.
thanks
Really nice rifles. I'm impressed how civilian hot-rodders improve the capability of shooters, rifles, and optics for the farther ranges (300-600/700) but notice they ignore the close-in / fast engagement using the same rifle/scope (sometimes with suppressor) combo.
I suppose the average line-doggy infantryman / SOF shooter should OWN anyone and everything he sees out to 300, but I've been around civilian and military shooters long enough to know that's just not true.
I guess match designers are trying to stress the distant/small target shot, as these guns seem to be getting long and heavy -- certainly more than a triggerman at the squad and ODA level would want when you consider in-house and in-the-village three block war fire and maneuver and cover and concealment. More like self-loader sniper-light, with a belt-o-bags and a tripod.
You can certainly be over-magnified. My first experience with that was my first civilian 3-gun match after coming off two assault SF ODA commands. My brother handed me a loaner AR with a Leupold 3.5-10. Great for any/everything past 150 -- but 25-50 and in, with multiple targets and quick exposures I completely missed (didn't engage) a target around 25 yards from me simply because I swung past it trying to engage a full array of other targets. Ha ha missed / you suck (did not engage) score and time penalties, but I was not pleased with my own performance coming from a duty position where I was paid to do that kind of thing.
By definition a near-ambush is within hand grenade and small arms range -- and some of these rifles are long(er) and heavier than reasonable for the full-spectrum fight from 25 to 600. Probably OK if you're always in the support element and never have to be an assaulter, close-in, or have to fight out of a vehicle.
Grumpy old man -- sure Boomer.
Here's a typical Army combat practice to exercise the whole rifleman concept:
Start at 500, prone, against an E-type. 10 shots in two minutes. Repeat at 400. Here you get maximum benefit from magnification.
At 300, one minute, two five-round magazines prone, but starting 25 yards behind the berm, rush up, and assume firing position and begin shooting. Premium on ability to engage, change mags, and re-assume position and natural point-of-aim.
At 200, again rush the berm and shoot two mags of five in 50 seconds, kneeling. Mid-range magnification will help, long and heavy don't.
At 100, rush the berm and fire one mag standing, one kneeling in 40 seconds. High-end magnification and a heavier rifle are not going to help.
Your last single magazine of ten is shot standing against two booger-eater E-type silhouettes near shoulder-to-shoulder. When it's time to score there have to be five holes in each target -- anything more and the lower hits are dropped, Anything less and those are misses. You get 4 seconds at 75 yards. 3 seconds at 50 yards. Two seconds at 25. Done. Long and heavy rifles suck for shooting close and fast.
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An M4 or M16 with an ACOG is the standard (this is an Army course of fire). A Marine M27 or MK12 SPR? Oh HELL YEAH, I'd take that. A 7.62 HK M110A1? The 6X would be great, especially at the longer ranges, but the recoil and recovery in anything but prone is going to be sporting.
Some of the rifles in this thread that almost call for a tripod? Good luck wit dat.
So, not meaning to sound like the fun police, some guys might want to consider balancing nth-degree precision with handling.
Just my 2 cents. I like winning gun games like anyone else -- but I also call bullshit on course designers for straying into live action role playing and saying it's real-world relevant. I've never been to a shooting match where paying contestants get to shoot at each other.
Here's what a formal match looks like (from the 2018 Army Championships, without ACOGs). Imagine this with your DMR/SPR:
Uh -- oh, never mind.An M4 or M16 with an ACOG is the standard (this is an Army course of fire). A Marine M27 or MK12 SPR? Oh HELL YEAH, I'd take that. A 7.62 HK M110A1? The 6X would be great, especially at the longer ranges, but the recoil and recovery in anything but prone is going to be sporting.
Some of the rifles in this thread that almost call for a tripod? Good luck wit dat.
Really nice rifles. I'm impressed how civilian hot-rodders improve the capability of shooters, rifles, and optics for the farther ranges (300-600/700) but notice they ignore the close-in / fast engagement using the same rifle/scope (sometimes with suppressor) combo.
I suppose the average line-doggy infantryman / SOF shooter should OWN anyone and everything he sees out to 300, but I've been around civilian and military shooters long enough to know that's just not true.
I guess match designers are trying to stress the distant/small target shot, as these guns seem to be getting long and heavy -- certainly more than a triggerman at the squad and ODA level would want when you consider in-house and in-the-village three block war fire and maneuver and cover and concealment. More like self-loader sniper-light, with a belt-o-bags and a tripod.
You can certainly be over-magnified. My first experience with that was my first civilian 3-gun match after coming off two assault SF ODA commands. My brother handed me a loaner AR with a Leupold 3.5-10. Great for any/everything past 150 -- but 25-50 and in, with multiple targets and quick exposures I completely missed (didn't engage) a target around 25 yards from me simply because I swung past it trying to engage a full array of other targets. Ha ha missed / you suck (did not engage) score and time penalties, but I was not pleased with my own performance coming from a duty position where I was paid to do that kind of thing.
By definition a near-ambush is within hand grenade and small arms range -- and some of these rifles are long(er) and heavier than reasonable for the full-spectrum fight from 25 to 600. Probably OK if you're always in the support element and never have to be an assaulter, close-in, or have to fight out of a vehicle.
Grumpy old man -- sure Boomer.
Here's a typical Army combat practice to exercise the whole rifleman concept:
Start at 500, prone, against an E-type. 10 shots in two minutes. Repeat at 400. Here you get maximum benefit from magnification.
At 300, one minute, two five-round magazines prone, but starting 25 yards behind the berm, rush up, and assume firing position and begin shooting. Premium on ability to engage, change mags, and re-assume position and natural point-of-aim.
At 200, again rush the berm and shoot two mags of five in 50 seconds, kneeling. Mid-range magnification will help, long and heavy don't.
At 100, rush the berm and fire one mag standing, one kneeling in 40 seconds. High-end magnification and a heavier rifle are not going to help.
Your last single magazine of ten is shot standing against two booger-eater E-type silhouettes near shoulder-to-shoulder. When it's time to score there have to be five holes in each target -- anything more and the lower hits are dropped, Anything less and those are misses. You get 4 seconds at 75 yards. 3 seconds at 50 yards. Two seconds at 25. Done. Long and heavy rifles suck for shooting close and fast.
![]()
An M4 or M16 with an ACOG is the standard (this is an Army course of fire). A Marine M27 or MK12 SPR? Oh HELL YEAH, I'd take that. A 7.62 HK M110A1? The 6X would be great, especially at the longer ranges, but the recoil and recovery in anything but prone is going to be sporting.
Some of the rifles in this thread that almost call for a tripod? Good luck wit dat.
So, not meaning to sound like the fun police, some guys might want to consider balancing nth-degree precision with handling.
Just my 2 cents. I like winning gun games like anyone else -- but I also call bullshit on course designers for straying into live action role playing and saying it's real-world relevant. I've never been to a shooting match where paying contestants get to shoot at each other.
Here's what a formal match looks like (from the 2018 Army Championships, without ACOGs). Imagine this with your DMR/SPR:
Wouldn't we all!In the end, personally, I’d probably be better off if I stopped building rifles and just train my ass off with one.
It's a barrel tuner from PSD, it helped... A little. I was just telling @FatBoy that it's hard to pinpoint the sweet spot since that particular one is so light, but it helped shrink groups for me on some factory ammo I used to run
@Phatcow I have been kicking around the idea of running the SPR at local PRS matches. I went back and looked at old match booklets and about 75-80% of the targets are between 300-700 yards. I definitely think it would be manageable and more enjoyable than running a hot rodded bolt gun.
I got the Guardian match at GTI in November that I made the decision to run the SPR. There are 3 stages that have unlimited round count and the SPR/DMR would be better suited than a bolt for lugging around the old nuclear facility. It’s about 5lbs lighter than my AI AX.
Local gun club was supposed to start SPR/DMR matches this month, but looks like it got postponed to January.
Ran barricade, tank trap, and cattle gate drills this afternoon. One round per position and move. Also had a 1/4 MOA group at 515yards
View attachment 7722919
View attachment 7722920
Most of the matches here are also 2-3 shots per position, with different targets. I practice with only shooting a single shot per position to get more reps with building and breaking position to increase my efficiency in building a solid position. In my experience building a solid position quickly and getting the first shot off for that position is the biggest difference in amateurs and pros. Probably should throw some target transitions in there from the same position, might make it 2 per position next weekend. Thanks for the advice @Phatcow !That's awesome. Only thing I would add is a shot timer if you have it, or even a cellphone timer would work. I think the biggest game changer for me was practicing getting into position and breaking the first shot within 30 seconds. Also, for me, usually the matches I shoot are 2-3 shots per target and move; that's usually a good thing for us gassers for follow ups on any misses. So having a few targets or positions be at least 2 hits would be great practice too. Otherwise that set up and group looks easily game winning. Let us know how it turns out if you get to run it!
How much of a difference did it make? And does tuning handloads make it obsolete?It's a barrel tuner from PSD, it helped... A little. I was just telling @FatBoy that it's hard to pinpoint the sweet spot since that particular one is so light, but it helped shrink groups for me on some factory ammo I used to run
So I got the tuner back when I was shooting a lot of factory - Federal gold medal match 77 gr OTM. My rifle would average about .6-.7 without the barrel tuner... And this is where most of my groups fell even with the tuner. However, there were a couple repeatable settings that completely opened the groups up to over an inch, and a setting or two that brought the groups down to under half an inch...How much of a difference did it make? And does tuning handloads make it obsolete?
Barrel specs? Where is the match at?@Phatcow I have been kicking around the idea of running the SPR at local PRS matches. I went back and looked at old match booklets and about 75-80% of the targets are between 300-700 yards. I definitely think it would be manageable and more enjoyable than running a hot rodded bolt gun.
I got the Guardian match at GTI in November that I made the decision to run the SPR. There are 3 stages that have unlimited round count and the SPR/DMR would be better suited than a bolt for lugging around the old nuclear facility. It’s about 5lbs lighter than my AI AX.
Local gun club was supposed to start SPR/DMR matches this month, but looks like it got postponed to January.
Ran barricade, tank trap, and cattle gate drills this afternoon. One round per position and move. Also had a 1/4 MOA group at 515yards
View attachment 7722919
View attachment 7722920
18” 1:7 Douglas SPR Contour Compass Lake Engineering Match Chamber. Reciever face is lapped and barrel bedded.Barrel specs? Where is the match at?
Given your parameters I’d choose a .223 carbine, I mentioned some reasons why I’d choose a .223/5.56 earlier in the thread as it applies to DMR matches. Those reasons can also carry over to training and ”SHTF” scenarios because you can carry a lot of .223 and it’s still cheaper than .308/6.5 CM/etc…. I would recommend .223 Wylde because it works as an AR-15 barrel chamber, it’ll shoot .223 REM and 5.56 NATO match ammo well.Im looking to build my first SPR for matches and training courses with the after thought of a SHTF. I know its opening a can of worms becuase everyone is different. I just want to be able to learn at training and be competitive in a match. Picking the right caliber is my hard part. What do training courses like hatcreek or ridgeline or CR2 recommend you use for their SPR/DMR courses? I used to shoot FTR with my bolt gun so I dont really know what Im getting myself into. Is Wylde the way to go and then build the rifle with a CLE barrel and Rifle gas system? Is a different caliber worth looking at?
Thanks. I was only thinking 18in to be able to use the heavier 69gr or 72 to get that extra umph at distance. And Then running rifle gas system to keep it as smooth as possible for follow up shots. I would rather have a nice accurate upper for matches and training and then maybe build a second upper with shorter barrel etc for the home defense. Maybe thats wrong though. I tend to over think everything.Given your parameters I’d choose a .223 carbine, I mentioned some reasons why I’d choose a .223/5.56 earlier in the thread as it applies to DMR matches. Those reasons can also carry over to training and ”SHTF” scenarios because you can carry a lot of .223 and it’s still cheaper than .308/6.5 CM/etc…. I would recommend .223 Wylde because it works as an AR-15 barrel chamber, it’ll shoot .223 REM and 5.56 NATO match ammo well.
It’s hard to go wrong with a CLE barrel, they have the reputation that they do for a reason. Since this is supposedly a “do-all” rifle, I’d recommend a 16” ML gas barrel, you’ll still have plenty of velocity to hit targets at 600 yards while still keeping the package nimble. A pretty good recipe for an all purpose rifle is below, it’s not the end all be all of lists but if you know what you’re doing you’ll be able to hang in DMR matches, do carbine training, and have a decent package when society folds up.
16” CLE ML 1:7 twist .223 Wylde
BCM MCMR 13” rail
Vltor MUR-1a
BCM BCG
a good forged lower
BCM grip
Geissele SSA-E
BCM SOPMOD MOD 1 stock
Vortex Gen III 1-10
quality one piece mount
Offset folding iron sights
What gas block are you using and how is the clearance? I have a 15” mk16 I was thinking of using on a SPR build but worried about the slim ID.Current build. Waiting on the Vortex LHT 4.5-22; EOTech on it for testing. Shooting great at 100, need to test it at longer ranges still.
Intent is a secondary shooter platform for team prs-style matches (think: TTG Sniper Challenge).
I’m using a Mk16 with an SLR non adjustable underneath. .750 with enough clearance.What gas block are you using and how is the clearance? I have a 15” mk16 I was thinking of using on a SPR build but worried about the slim ID.
Did this match happen? Says you're from VA so close to me in MD.I'm doing a gasser precision match on my farm this fall and really looking forward to shooting small targets with these gassers. Bunch of my buddies have been building SPRs, 6ARCs, 6.5Gs, etc. so it will be fun to see what they have come up with....