Recommend second caliber barrel?

[Darreld Walton]

Getting back to the AR upper, though, one rig that I'd like to check out a lot closer is the 25-45 Sharps, produced by these folks, http://srcarms.com/

[Former Cav]

built one in 6.5 Grendel, like the dime size groups at 300 yds.

what loads are you using?
what barrel /upper do you have?
see my write up about the 6.5 Grendel "progress" above.
Thanks

[barretcreek]

Really ????? Pray tell , in which pistol was it introduced in ?0
Chris

.300 B/O introduced as .300 Whisper by J.D.Jones for the Contender.

My alternative upper is a 7.62X40 Wilson. They had a sale on barrels when they switched over to the Ham'r. 30/30 ballistics from an AR 15.

[PeteDavis]

6.5 Grendel!

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Pete Davis

[lyman]

the 300 blackout--very expense--I'ts a pistol round !!--most 7.62x39 ar's are usually prone to BAD MAGS--i'VE NEVER HAD A PROBLEM--ASC 20 rounders

no it is actually a rifle round, for suppressed

[Former Cav]

built one in 6.5 Grendel, like the dime size groups at 300 yds.

what load are you using for that? I have only one load out of 30 that will get me down to 13/16 inch (5 round group). And that is Varget which is not recommended as you can not get enough in the case to go faster then 2350 with a 123 SST bullet.