If you wanted to build a really accurate centerfire semi-auto, what would you build?


March 8, 2005, 09:46 PM
Build from a base rifle or build from parts. Pick a caliber, pick a rifle.

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March 8, 2005, 10:15 PM
Springfield Armory M1A! End of discussion. Take your pick:
Match ?
Super Match ?
Ultra Match ?
M21 Sniper ?
GYGS Carlos Hathcock Comemoritive "White Feather" model?
Chrome-Moly bbls?
Kreiger SS bbls?
Wood stock or Synthetic?
They will put together any set-up that you want!

March 8, 2005, 10:32 PM
M1A, .308

Or, M82A1, .50 Cal

March 8, 2005, 10:33 PM
As sold to Uncle Sam and his special ops guys by ArmsTech, LLC. A revamped Browning BAR sporter in .300 Win Mag, with one-piece McMillan stock, heavy stainless barrel, U.S. Optics glass, and detachable M1918 BAR magazine capability:


March 8, 2005, 10:34 PM
Damn - ya beat me to it.

March 8, 2005, 10:38 PM
Gewehr98, If that pic is a BAR, where did the gas system go??? :confused: :confused: :confused: :confused:

Chris Rhines
March 8, 2005, 10:52 PM
The most accurate semi-auto rifles made today are all built on the AR-10/AR-15 chassis.

I'd have Scott Medesha build me up one of his long-range AR-10s in 6.5-'08.

- Chris

March 8, 2005, 10:53 PM
Just like it was under the forend in the two-piece stocked BAR. The one-piece synthetic McMillan stock just makes for a more stable platform.

Unless you're confusing it with the older military M1918 Browning BAR. The gun pictured above is a reworked commercial BAR sporter, not the old WWI-WWII era full auto M1918, which is almost totally unrelated (save for the name).

El Rojo
March 8, 2005, 11:25 PM
No AR-15 .223? I will say it just because I can't really have one. I have to settle for the FAB-10.

March 8, 2005, 11:34 PM
Some months back someone had a picture of a semi-auto rifle that was chambered in 338 lapua.

I think the link said it ran about 5 grand or so. I did not keep the link for fear I might sell the house to be homeless and living at the shooting range with my new toy.

March 8, 2005, 11:46 PM
Rock River AR. 5.56

March 9, 2005, 12:47 AM
I'd go AR-15 in .223. It's the semi-auto with the best cost to accuracy ratio. This will probably require the least amount of gunsmith intervention. You could build from parts and save a few bucks. Depending on what you want such as barrel length (16, 20, 24, or something else), handguards (standard or straight through), trigger, barrel manufacturer, it may just be best to build from parts.

If you want to have some real fun, go with an M1 Garand. Get yourself a rack grade Greek issue from the CMP, have it reworked by a real gunsmith and get yourself a nice .308 Krieger barrel for it and a DGR stock. People will recognize the righteousness.

M14s are nice too, but it will cost a lot of money to get them anywhere near as accurate as an AR. We're talking about getting a good receiver from someone like Fulton Armory and rebuilding with milspec parts. Go with a Kreiger barrel and send it to McMillan to get it bedded into one of their stocks.

Now that I think about it, I really feel like rebuilding a Garand...

March 9, 2005, 01:16 AM
High end AR-15's will do 1/4 minute groups for a reasonable price. I know of no other centerfire semiauto's that will do that without CRAZY tweaking. Read The Rifle Shooter by David Tubb, in there he goes into the trials and tribulations of trying to get his SR-25 in 6.5-08 as accurate as can be... long story short he couldn't beat 1/2 min groups. "really accurate" is a relative term. If you mean MOA, you have a million options, 1/2 minute, a few, 1/4 minute, think words like "Fulton Armory, JP, and Medesha".


March 9, 2005, 01:28 AM
I'd want something like a SCAR-L in 6.5x39mm, w/ 20" HB.


March 9, 2005, 02:33 AM
Hmm, for shooting paper; AR-15

For serious business; M14 type rifle

March 9, 2005, 05:12 AM

White Oak Precision upper.

March 9, 2005, 09:01 AM
Seconded the WOP AR-15. Use the few grand saved over the other exotica to buy ammo and get really good at shooting the thing.

Quite frankly, a 1/2 MOA semi-auto is a pretty good rifle. An AR-10 in 6.5-308 or even modified for the 6mmX would be a nice rifle, capable of doing most anything most of us will ever actually use a rifle for (actually, the .223 is adequate also), but it won't come as cheaply as a .223/5.56 AR-15.

Bartholomew Roberts
March 9, 2005, 09:18 AM
The AR15 is tough to beat for ease of building and inherent accuracy of the finished product. If I were going to be the one building it, it would pretty much be the only option since anything remotely competitive with it would be much more complex to build to the same level of accuracy.

March 9, 2005, 10:40 AM
M1a in .250 Savage. It'd be odd, but very accurate.

My used M1a in .308 is my most consistently accurate rifle.

Essex County
March 9, 2005, 11:29 AM
My Colt H-BAR with good handloads will keep me happy.........Essex

Black Snowman
March 9, 2005, 01:51 PM
I'm saving up for an Oly Arms .243 WSSM upper. Owners on AR15.com have reported good luck with them. Relatively light and handy gun for something semi-auto and supersonic out to at least 1000 yards with the heavier bullets.

I'm using varminting as an excuse for getting it ;)

Duke of Lawnchair
March 9, 2005, 01:54 PM
MSTN or ADCO built SDM.

March 10, 2005, 11:50 AM
Start with the US Rifle Cal .30 M1, service grade from CMP, then build up to National Match grade.

What else could you want? A huge chunk of history, the 8-BLAM PING! Song of The Garand, in .30-06, so you are good out to rediculous ranges.

Or re-barrel with a really good Kreiger (sp??) in .308, and add the mag spacer block..WOOOO HOOO

March 10, 2005, 12:06 PM
Another vote for the BAR in 300 winmag...


Zak Smith
March 10, 2005, 12:43 PM
While you have to work and spend lots of $$$ to get more conventional rifles like the M14 to a certain level of accuracy, you'll be hard-pressed to build an inaccurate AR15 as long as you start with a good barrel and don't grossly screw up assembly.

Yes, it's basic "in your basement with instructions off the internet and $50 worth of tools from Brownells assembly", not the kind of extensive gunsmithing, fitting, and bedding required to get an M1 or M14 to the same level.

The AR10 is just the big brother to the AR15, basically identical in design. The same pattern holds. Start with a good barrel and you'll more than likely end up with an accurate AR10, everything else being "stock."

The AR10 also has clear advantages with regard to optics mounting ergonomics vs. an M1A.


March 10, 2005, 02:31 PM
M1A or BAR. Or both. Everything else is as common as a hammer.

March 10, 2005, 09:01 PM
M1As are pretty common around here, especially with anybody in Highpower over the age of about 40 or so. The AR-15s are what the top shooters use. And, quite frankly, as fun as it is to imagine needing a rifle to "reach out and touch something," most people will only ever use it for paper targets, rocks, steel or other inanimate fun things, so the .223 would be adequate. If you live in a really windy, wide open place, a 6.5mm on an AR-10/SR-25 platform would probably be a better alternative.

March 11, 2005, 08:37 PM
Hmm, you guys are making me want an AR10 really bad. :uhoh:

March 11, 2005, 09:18 PM
Can you say DRAGUNOV? .223 is okay for killing poodles and such, but ya gots ta have some lead in that bullet! {whispers} AR-15's SUCK! :neener:

4v50 Gary
March 11, 2005, 09:22 PM
Thanks GeWehr98. I've delved so deeply into blackpowder that I've lost track of the newest developments. I did not realize that the BAR has been militarized. :)

Just for the fun of it, in case you've ever wondered how the sporting BAR rifle works, click here and scrow down just a mite bit BAR operation (http://www.thefiringline.com/forums/showthread.php?t=11834)

BTW, if I were to build an action, I'd choose the AR-10 type action. Fewer parts & no gas piston bouncing back & forth. Gas impingment rules!

Zak Smith
March 11, 2005, 09:27 PM

My JP AR10 with lots of upgrades is for sale in the forum here...


March 12, 2005, 01:36 AM
It's been around long enough to see service in Bosnia.

I like the BAR because the gas system is amazingly similar to the M14's, mimicking the White method of self-regulation.

I have several AR-15 variants, but still can't get excited about an action that dumps it's exhaust back into the receiver. Of my 100+ guns, they're the ones that spend the most time hiding out in the safe. I spend a metric buttload of time cleaning my M16A2 after qualifications and when I had government-invited quality time in a certain tent city a short while ago. That sand over there is like nothing I had ever seen before. :(

Maybe an AR-10 variant with the new HK/Leitner-Wise/DSA gas-piston system? Do they make the conversion for the .308/7.62mm NATO versions?

March 12, 2005, 04:12 AM
Good AR-15s and AR-10s are doing 1/2MOA out of the box.

JP makes a sweet AR-15 that's 1/4MOA capable.

DPMS AR-10 shooters are reporting 1/2 to 1/4MOA groups too. Much as I like the KAC SR-25, it aparently is not quite as accurate as the much cheaper DPMS!

My choice would be a DPMS AR-10 in 6.5-08 or a JP CTR-02 in .223 shooting 77gr OTM.

March 12, 2005, 04:14 AM
To the shooter who suggested M82A1. Nope.

I've got one, and it's a great fun gun, but it's 1.5-3MOA at best so far.

To make it a semi, the barrel recoils. That means it's not welded to the upper. This makes it inaccurate sadly.

I would like to see the barrel o-ring'd ala H&K's Mk23 (on biiig steroids :) to help bring it down to maybe 1MOA.

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