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Post by shelbydaniel on Feb 15, 2016 15:04:20 GMT -8
So I have been itching for an AR platform Grendel since shooting my buddies and I found on Snipers Hide. Here are the basic specs:
Aero lower Elfmann 3 gun trigger Magpul Miad Ace stock Black hole 264 lbc 22" SS barrel TYPE 1 BCM KMR15 rail Jp 6.5 bolt <----guessing it's not a TYPE 1 PRI heavy BCG PRI charging handle Aero Upper
The seller told me the prior owner ran 300 thru it with no problems, and he ran 30 thru it with no problems. After receiving it and properly mounting my Vortex PST, I had problems getting the SST Hornady to chamber, then on the 5th shot the JP enhanced extractor broke...
The Hornady brass on 3 of the 5 rounds was bulged near the bottom of the case. I called JP and they told me they don't make a Type 1 bolt so I'm assuming that buying a 7.62x39 bolt will most likely fix the issue. I find it hard to believe anyone ran 300 rounds thru it with no problems. Thoughts?
Thanks!
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Post by GLSHOOTER on Feb 15, 2016 16:22:04 GMT -8
Someone was less than honest with you. If you are bulging cases you probably have a TYPE II bolt. Measure the bolt face depth and let us know. DO NOT SHOOT THIS UNTIL YOU KNOW!!!!!!
Greg
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Post by shelbydaniel on Feb 15, 2016 16:44:08 GMT -8
This JP bolt is definitely .136 so I ordered a 7.62x39 bolt from RGuns. Hopefully this will fix it. I'm with you, somebody had to have known the gun had issues. If not the seller, the original builder. I think the buck got passed to me. Funny thing is it was grouping sub moa even with the wrong bolt so BHW makes a fine barrel. I hope to have a really nice Grendel after this is sorted. I'll let you know after I get the new bolt.
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Post by GLSHOOTER on Feb 15, 2016 16:46:43 GMT -8
This JP bolt is definitely .136 so I ordered a 7.62x39 bolt from RGuns. Hopefully this will fix it. I'm with you, somebody had to have known the gun had issues. If not the seller, the original builder. I think the buck got passed to me. Funny thing is it was grouping sub moa even with the wrong bolt so BHW makes a fine barrel. I hope to have a really nice Grendel after this is sorted. I'll let you know after I get the new bolt. I've been shooting that bolt. It will do fine for you. Greg
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