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lapriester

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Reply with quote  #26 
There's strong rifling to the groove. Then it goes away and returns at the very last few thousands before the muzzle, There is also a faint groove in line with the second external barrel step. I couldn't get a picture of that one.

BIGGDAWG, about 1 1/4"+ would have to be cut off. Wouldn't that have a negative effect on rifle function with rifle length gas? I heard something about that somewhere. Take off too much and function suffers?
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Moleman

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Reply with quote  #27 
I wonder if they did a piloted crown cutter or piloted center that screwed that up. 
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lapriester

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Reply with quote  #28 
Hadn't thought of that.  That certainly would do it.  Especially if the pilot was under sized.  Anyway, I have an email in to the folks at ar15part.com with pictures.  Let's see if they respond.  The blem sales page described this as having a flush index pin but the barrel was serviceable otherwise.  But, they also said sale was final.  I think it might be a toss up...we'll see.  $69 isn't going to break the bank no matter what.  :-)  LOL, maybe I'll just hack it off with my cutoff saw and diamond blade and crown it like I've cleaned up crowns on M1 Garands.  With a round head brass screw big enough, my drill and valve grinding compound.  Or maybe send it to BIGGDAWG if he thinks shortening it 1.5" or so won't effect function.
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Rifter

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Reply with quote  #29 
Quote:
Originally Posted by lapriester
There's strong rifling to the groove. Then it goes away and returns at the very last few thousands before the muzzle, There is also a faint groove in line with the second external barrel step. I couldn't get a picture of that one.

BIGGDAWG, about 1 1/4"+ would have to be cut off. Wouldn't that have a negative effect on rifle function with rifle length gas? I heard something about that somewhere. Take off too much and function suffers?

I'm certainly no expert, but you ought to be able to plug the current port and drill a new port.  Pretty sure Bruce has done that sort of thing in the past, but either way he could tell you if its viable.

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lapriester

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Reply with quote  #30 
What the hell BIGGDAWG, PM me your address and I'll send this dog to you. I'll put what I pay for shipping Priority inside plus the $25. Check OK? You can dribble it to the bank.😉 I see that PSA sells a rifle gas 18" Grendel so to make sure we get past the flaws just take 2" off. Target crown will suffice. In the end just a bit over $100 invested so why not. I read I might have to drill the port open a bit (someone said to .104") but I've done that before and I have an adjustable going on it anyway.

But, before I do I want to wait for a few to see if the seller answers my emails. Who knows, they are might actually make good on this, refund and pay for shipping too. I may turn blue holding my breath for that.😨
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lapriester

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Reply with quote  #31 
So they decided to send me a first quality barrel instead of the scratched SST blem I recently ordered as compensation. But, when adding it up with no refund it actually ended up costing me more than just buying one to begin with. Not cheap like I wanted for certain. $80 + $90 with shipping. So, I pointed it out to them and they offered a refund on return so, bottom line, I get a 1st quality barrel for $90 shipped and a refund of $70. With me paying for return shipping it's basically $120 for the new 1st quality barrel. Not great but better than a $70 tomato stake or a kick in the shorts. I'm thinking I'll refrain from purchasing there again.
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RangerJoe

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Reply with quote  #32 
They should have let you keep the blemished barrel - at least you could have had BD cut and recrown it.
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lapriester

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Reply with quote  #33 
They offered that but I have absolutely no use for it and, the risk there was something else wrong was unacceptable to me. Flush index pin, concentric rings in the muzzle, add maybe inproperly installed barrel extension with bad headspace or some other serious defect I can't see mid bore. Plus it may have ended up miserably inaccurate thus an $80 tomato stake. What do they say? If the deal looks too good to be true it probably isn't. At my age I should have known better. LOL.
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bbbrownfield

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Reply with quote  #34 
You can still shop there, but for sure don't buy any more of their "bargains".
They are generally pretty good and fair people or they wouldn't have taken back the tomato stake. You did the right thing- in my years I've bought my share of barrels and guns that made better garden ornaments. And they were all "bargains" [biggrin]

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lapriester

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Reply with quote  #35 
Yeah, well, the worse part is the almost $40 in total shipping I'm eating in this "deal". They may be able to ship for a flat $9.99 but return shipping was $18 for me. Even Parcel Post it was over $17. The USPS is such a rip off.😡🤬
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lapriester

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Reply with quote  #36 
I got the replacement barrel today.  Honestly, it looks like it's worth the extra I paid in the end.  We'll see how it shoots.  If it shoots as good as my 18" Type I Grendel I'll be very happy since that one shoots index fingernail groups at 100.  This being a 20" it will no doubt produce higher velocities with the same load.  Though, accuracy, not velocity is my bottom line goal.  Being a heavier profile barrel will probably be a negative for me for anything but stand hunting.  
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lapriester

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Reply with quote  #37 
Well, it's an upper now. Sure looks good I'll say that. Now to see if it shoots as good as it looks. The extractor is a bit hard on case rims like my type 1 bolt was before I removed the enhance ring and filed the extractor edges. It's not as bad so I think I'll just clean up the extractor sharp edges on this one before I shoot it. It's leaving two cuts on the rim as the extractor snaps over. That's an easy fix.
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lapriester

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Reply with quote  #38 
Got that newest Grendel upper out for testing today with some throw on iron sights. I bought some Hornady Black ammo to have factory ammo to shoot. What crap ammo. Weak and even with the gas block wide open the bolt would only lock back 50% of the time. Accurate though but grossly under powered. Switched to H335 and 8208XBR reloads. Perfect function. Only shot at 50 yards with the irons and bad eyes. No surprise the best load was the same in this upper as my Type 1 upper. 28.5gr XBR, 100gr Ballistic Tips, 450 primers. 27.5gr H335 was a close second. I added a pic of the XBR target. The barrel from AR15parts shoots pretty decent. Ignore the fliers created by the blind dude and iron sights. And a local ground squirrel made the mistake of standing up against the bank I was shooting at. He flew about 25' in the air when I dead centered him at 50 yards. 😁

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Jaron

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Reply with quote  #39 
I've heard bad things about Hornady Black, but never used it.  This seems to confirm a lot of it.
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lapriester

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Reply with quote  #40 
Yeah, my reloads are not really very hot. No signs whatsoever. But I didn't have a single malfunction. The Hornady even felt wimpy, about a third less recoil. The only thing it had going for it was the ELDX bullets. It shot pretty accurate but a full inch lower at 50 yards than the reloads with 28.5 XBR. On ejection it went to about 4 o'clock like my loads but, about 2 ft shorter distance. It would eject snd feed but almost never locked back the bolt after the last round. Truthfully I've never much liked ANY Hornady factory ammo. None of it has ever compared to my reloads and I reload with pretty basic tools. Everyone had to convince me to buy a Hornady Headspace Comparator Kit to measure bump. Needed it for the custom GPC sizer.
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sleddoc

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Reply with quote  #41 
I heard through the grape vine that there were barrels coming from the j a pan company that were hammer forged that are full of defects. These are being made for all kinds of companies , the metal it self is soft. Is it hammer forged? Usually these barrel wont have any stamping on them either.
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