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Posted: 9/15/2012 2:05:56 AM EDT
| Anyone ever build a AR 10 in 260 if so what components and how did it preform? |
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DPMS REPR with a 24in Kreiger bbl.
performs amazing 
with the 140gr pills they are great long range rifles. I have been deer hunting with mine out to 700 fir a few years now and am still amazed how little hold over there is and how easy it is to shoot this round/rifle well. (dont call em ar-10's, someone will bust a nut  )
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I'll finally be able to put together my DPMS .260 early next month. I'll probably do a fairly detailed write up on building/reloading for it.
Parts list: DPMS A3 upper and LR-308 lower JP recoil eliminator brake JP adjustable .936" low-profile gas block JP extended FF tube JP enhanced bolt Kreiger 26" 1:8" twist SS barrel (.260 remington) Jard Adjustable trigger Magpul MOE stock (I may change this out with a fixed rifle stock–– this rifle started out as a 16" .308 carbine) Everything else is standard DPMS parts I have a NF NXS 5.5-22x56mm NP-R1 scope in a Larue LT-158 mount for it, and swap a harris 6-9 BRMS bipod around on several rifles (Larue QD mount). I'll be reloading using H4350, 140 Gr Amax's and 140gr Berger VLD's. If none of that works I have some 123 class bullets and some other powders to try as a backup plan. I'm giving the Redding bushing dies a go with a .288" bushing and RP brass. CCI 200 primers. My expectation is that it will be about 3/4 MOA or better for 10 round strings. |
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I'll finally be able to put together my DPMS .260 early next month. I'll probably do a fairly detailed write up on building/reloading for it. Parts list: DPMS A3 upper and LR-308 lower JP recoil eliminator brake JP adjustable .936" low-profile gas block JP extended FF tube JP enhanced bolt Kreiger 26" 1:8" twist SS barrel (.260 remington) Jard Adjustable trigger Magpul MOE stock (I may change this out with a fixed rifle stock–– this rifle started out as a 16" .308 carbine) Everything else is standard DPMS parts I have a NF NXS 5.5-22x56mm NP-R1 scope in a Larue LT-158 mount for it, and swap a harris 6-9 BRMS bipod around on several rifles (Larue QD mount). I'll be reloading using H4350, 140 Gr Amax's and 140gr Berger VLD's. If none of that works I have some 123 class bullets and some other powders to try as a backup plan. I'm giving the Redding bushing dies a go with a .288" bushing and RP brass. CCI 200 primers. My expectation is that it will be about 3/4 MOA or better for 10 round strings. I need to save up for a night force one of these days 
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Anyone ever build a AR 10 in 260 if so what components and how did it preform? I had GA Precision do mine, with DPMS AP4 receivers and a 22" Bartlein barrel that shoots superbly. I have a Geissele SSA trigger in it. I'm averaging .4"-.6" 5-round groups with 139gr Scenars, 130gr Berger VLD's, and 140gr Barnes Match Burners. H4350 and RL17 are the go-to powders so far, and I've tested N540, N550, H4831 as well. H4831 provided insane accuracy, but not enough velocity. I've shot a 9.25" 3-round group at 1000yds, with a non-adjusted wind shift that took the group from 3.5" out to 9.25". If I had held a little more into the wind when it kicked up, it would have been tight. It also shoots half-MOA at 500yds, so I'm very pleased with it. The rifle makes me butt hurt if I shoot any .75 MOA groups, which is the best I have been able to get with the 140gr AMAX's so far for 5-rounds. I'm going to work a load for the 129gr SST's as well and see what happens, as I got a deal on them in bulk. |
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LMT offers a barrel for their MWS308 rifle. You remove 2 bolts, swap out the 308 barrel, swap in the 260 Rem barrel, replace and torque the 2 bolts, and you're ready to shoot. Uses the same bolt and magazines seeing as how the 260 Rem case is based off of a 308 case.
I have one of the LMT's with a Premier 3-15 on top of it use to shoot long range precision matches with. It shoots in the .5's with 120gr AMAX's Bill |
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I sure do http://i27.photobucket.com/albums/c183/J75player/REPR.jpg recovered 140gr Berger VLD hunting from a MN whitetail front shot at about 400yards http://i27.photobucket.com/albums/c183/J75player/hunting/berger.jpg 5shot 100yard group with the hunting round above. http://i27.photobucket.com/albums/c183/J75player/shooting/P1090988a.jpg I would have to say you have a killer setup! I have read that in a gas gun, the 6.5CM would be a better choice, while the .260 is a better choice for bolt guns? I'm not much for AR10s but just wondering... |
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Quoted:
DPMS REPR with a 24in Kreiger bbl. performs amazing
with the 140gr pills they are great long range rifles. I have been deer hunting with mine out to 700 fir a few years now and am still amazed how little hold over there is and how easy it is to shoot this round/rifle well. (dont call em ar-10's, someone will bust a nut )yeah someone will bust a nut. For a reason. If you drive a Chevy 1500 and want transmission replaced your not going to order a transmission for a Ram 1500 are you? Simply put the parts are not interchangeable so it is not good idea to interchange the names. Right? |
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As far as the .260 Remington is concerned it is the best (overall) cartridge for: light recoil, long range accuracy, versatility in both l/r tactical and hunting roles one
could have in a AR-10/LR -260/308 platform rifle...IMHO. A very good runner-up would be 7mm-08, and of course for a bit more power the .308 Win/7.62x51mm. The .260 Rem. just has the best overall balance between the 7mm-08 & .308 cartridges IMHO. The 6.5mm CM has less Industry support for now and thus I would shy away from it for that reason and that it is a bit more expensive to reload for is another, etc. The other 6.5mm cartridges like 6.5x47mm, are heavy on their barrels and actions...and would shy away from them as well... Good Luck. |
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DPMS REPR with a 24in Kreiger bbl. performs amazing
with the 140gr pills they are great long range rifles. I have been deer hunting with mine out to 700 fir a few years now and am still amazed how little hold over there is and how easy it is to shoot this round/rifle well. (dont call em ar-10's, someone will bust a nut )yeah someone will bust a nut. For a reason. If you drive a Chevy 1500 and want transmission replaced your not going to order a transmission for a Ram 1500 are you? Simply put the parts are not interchangeable so it is not good idea to interchange the names. Right? no... more like haveing some guy get pissed off because someone says "chevy truck", because ford made the first truck, so only fords can be called trucks
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(dont call em ar-10's, someone will bust a nut )Put him on ignore; life is nicer. Are you reloading or using factory ammo? i'v done all reloading for my .260. I was lucky enough to discover the Berger VLDs right away so that is what i have used the most. but have ran several hornaday bullets as well. but the Bergers have been fantastic |
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I sure do http://i27.photobucket.com/albums/c183/J75player/REPR.jpg recovered 140gr Berger VLD hunting from a MN whitetail front shot at about 400yards http://i27.photobucket.com/albums/c183/J75player/hunting/berger.jpg 5shot 100yard group with the hunting round above. http://i27.photobucket.com/albums/c183/J75player/shooting/P1090988a.jpg I would have to say you have a killer setup! I have read that in a gas gun, the 6.5CM would be a better choice, while the .260 is a better choice for bolt guns? I'm not much for AR10s but just wondering... supposedly the CM is better in guns with mag length restrictions for loading the VLDs. but i THINK that the Berger 140VLDs are about the longest practical bullet for either .260 or CM, and I load them just fine. (2.810 for my load) |
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People who think the Creedmoor is better in a gas gun for loading VLD-shape pills haven't loaded for .260 in a gas gun. I also load the VLD's to 2.810", and even 2.815", or 2.800" which is SAAMI, and have zero issues. I can feed those COALs from the PMAGs too.
There is plenty of room for the VLD's, Scenars, 142gr SMK's, AMAX's, and Match Burners in the .260 Rem AR. I have .100"+ of exposed bearing surface on the 130gr VLD's, so I'm not even close to burying the ogive into the neck. What I have seen is guys having feeding problems with the Creedmoor in the AR10 because it has a shorter base-to-shoulder length, and isn't like a .308 case, which the AR10 was built around. The .260 Rem has the same base-to-shoulder length, same shoulder angle, and feeds well. Some AR10 smiths think it feeds even better than the .308, so go figure. The 6.5 CM is a necked down Hornady 30 TC, which IS a very efficient cartridge, but maybe not ideal for the AR10 magazine and feed ramps. 
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I'll finally be able to put together my DPMS .260 early next month. I'll probably do a fairly detailed write up on building/reloading for it. Parts list: DPMS A3 upper and LR-308 lower JP recoil eliminator brake JP adjustable .936" low-profile gas block JP extended FF tube JP enhanced bolt Kreiger 26" 1:8" twist SS barrel (.260 remington) Jard Adjustable trigger Magpul MOE stock (I may change this out with a fixed rifle stock–– this rifle started out as a 16" .308 carbine) Everything else is standard DPMS parts I have a NF NXS 5.5-22x56mm NP-R1 scope in a Larue LT-158 mount for it, and swap a harris 6-9 BRMS bipod around on several rifles (Larue QD mount). I'll be reloading using H4350, 140 Gr Amax's and 140gr Berger VLD's. If none of that works I have some 123 class bullets and some other powders to try as a backup plan. I'm giving the Redding bushing dies a go with a .288" bushing and RP brass. CCI 200 primers. My expectation is that it will be about 3/4 MOA or better for 10 round strings. I need to save up for a night force one of these days It's a good and a bad thing. On one hand, you have a fantastic optic. On the other, you're leery to buy anything "lesser" ever again (and your wallet hates you). I'm now at 3 NXS's. The only thing I don't like is the lack of FFP options from NF. It hasn't been an issue with the 2.5-10x and 3.5-15x models because I can run them at max zoom without any real issues most of the time. We'll see how it goes with the 5.5-22x, though. I'm a little worried about how mirage will play out. I hope I don't run into any issues with the Berger VLD's and seating depth. A lot of people seem to think they're picky about it. I honestly hope the Amax's shoot as good or better. ~$10 difference per 100 bullets. |
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People who think the Creedmoor is better in a gas gun for loading VLD-shape pills haven't loaded for .260 in a gas gun. I also load the VLD's to 2.810", and even 2.815", or 2.800" which is SAAMI, and have zero issues. I can feed those COALs from the PMAGs too. There is plenty of room for the VLD's, Scenars, 142gr SMK's, AMAX's, and Match Burners in the .260 Rem AR. I have .100"+ of exposed bearing surface on the 130gr VLD's, so I'm not even close to burying the ogive into the neck. What I have seen is guys having feeding problems with the Creedmoor in the AR10 because it has a shorter base-to-shoulder length, and isn't like a .308 case, which the AR10 was built around. The .260 Rem has the same base-to-shoulder length, same shoulder angle, and feeds well. Some AR10 smiths think it feeds even better than the .308, so go figure. The 6.5 CM is a necked down Hornady 30 TC, which IS a very efficient cartridge, but maybe not ideal for the AR10 magazine and feed ramps. http://accurateshooter.net/pix/260REM.png http://ammoguide.com/gfx/agnews/0807/65creedmore.gif Well said and to the point. |
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