I'm looking for a couple of dummy 6.5 grendel rounds to test my build with safely. All I have are live rounds and no reloading equipment yet. Can anyone make me a couple of dummy rounds for testing a build? (Like snap caps.)
WTB: 6.5 grendel dummy rounds (2)
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Originally posted by babue View PostYou could just remove your firing pin and test cycle everything.
Don't do it. Guys have seized their AR15's up that way in the past.Last edited by LRRPF52; 02-22-2016, 02:49 PM.NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
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6.5 Grendal snap caps are available
check out www.harbourarms.com
They have 6.5 grendal snap caps. think they are listed as 6.5 AR.
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Originally posted by LRRPF52 View PostThat can lock a gun up since the cam pin is no longer clocked by the firing pin. If the cam pin rotates and moves radially away from the bore center when the bolt goes into battery, it seizes up the bolt in the extension.
Don't do it. Guys have seized their AR15's up that way in the past.
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Originally posted by pontoon View PostI'm looking for a couple of dummy 6.5 grendel rounds to test my build with safely. All I have are live rounds and no reloading equipment yet. Can anyone make me a couple of dummy rounds for testing a build? (Like snap caps.)
I take several different factory ammo samples, ranging from both Horandy's, to PPU, to AA 123gr Scenar, to PF 120gr Scenar-L, to some of my dummy cartridges, and I seat them in the chamber deeply.
I then hold the barrel muzzle up and see if the cartridge will fall out with gravity. If it does, I then check the throat length with longer-loaded dummy cartridge to make sure I have a good throat, not some Roy Weatherby abortion with insane jump.
If the cartridge does not fall freely with gravity, I lightly tap the extension in my palm. If it falls freely then, I look at the ogive for any evidence of kiss from the lands, which I usually never see.
If it doesn't fall freely with a tap, it tells me that we have some engagement with the lands, and once I push it out with a rod carefully, I inspect and color the ogive with black marker to repeat the test, measuring how much land engagement there is. Most new barrels will have tool marks in the lands that can be abrasive at first, and need polishing.
If the throat is so short that it is jamming the lands to the point you would need to mortar the gun, it needs additional finish reaming. I've seen that on 2 barrels that were cut with an unknown reamer.
I have not had this happen with AA, PF, or Lilja barrels.NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
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