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Load testing my AR-10/260 Rem.......

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13 years 5 months ago #7590 by Maximus
Did some load testing my AR-10T/260Rem the other day. It really likes the Sierra 100gr HP bullets. Recoil is not a factor. I was able to zap small rocks on the 200M berm with them..

Didn't bring my AR-10B/308 but I did have my Colt HBAR along for the ride. Just for some casual plinking with some 20 year old reloads. Both guns functioned perfectly with zero events. With the Iron sights on the HBAR I couldn't match the AR-10's accuracy but the HBAR is plenty accurate for the battlefield. One thing I did notice was the recoil spring vibrating after every shot. Boing,boing,boing.

Next time I go to the range I will take my M1A and my AR-10B/308 to fart around with. Having fun out here before it gets too hot! :woohoo:

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13 years 5 months ago #7630 by Edge
Do you know how fast your loads were going? Do any group testing?

How's the reliability?

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13 years 5 months ago #7631 by Maximus
Very reliable. My 223 reloads were made in 1991. No misfires or feed failures at all.

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13 years 5 months ago #7738 by woodnut
About the boing, boing, boing; Don't do anything about it ! You'll just have to accept it as that's what it does. Seriously, don't try any fixes; it ain't broke!
I have an AR10 in 260. With H4831SC and 140s, I get bug holes at 100 when the vel. is about 2750fps. Tried it out to 300 on a four inch pumkin. Smacked it every time !Had to use the third mil dot; but that's what theys fer, right ?

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13 years 5 months ago #7739 by Maximus
I'm just shooting up odds & ends to see what the gun likes best. So far it seems to like most everything. I'm using 4831sc & 4895 powders with various bullets. I really like this 260 Remington caliber.

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13 years 5 months ago #7741 by Edge

Maximus wrote: Very reliable. My 223 reloads were made in 1991. No misfires or feed failures at all.


You're firing 223 in a 260? :huh: :unsure:

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13 years 5 months ago #7742 by Edge
On a serious note, thank for the reports. I've been looking into getting one of these. May end up going with custom build from GA Precision instead.

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13 years 5 months ago #7746 by Maximus
223's in the Colt HBAR. 260's in the AR-10T

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13 years 5 months ago #7748 by BUILDING MY SASS

Maximus wrote: One thing I did notice was the recoil spring vibrating after every shot. Boing,boing,boing.

:woohoo:


There a couple of proven "fixes" for that...but I just put a bit of Mil-comm TW25B Gun Grease on my buffer spring...seems to quiet up a bit.... ;)
BMS

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