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    Gunsmithing Core 15 Rifle chamber issues

    Here's the deal. I can't seem to get a reply from the company so I will ask you all what your thoughts are. I know it isn't a precision rifle, but It is a new shooter looking to advance and getting a bad taste for rifles already. 16" barrel Carbine AR15 (their base model) from Core 15 Rifles...
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    I'm waiting for...

    I'll be happy when my 3k order of bullets in various calibers from various manufacturers gets here. I am down to my reserve ammo now! 2k and dropping!
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    An odd AR10 build?

    Well, the project is on hold for a bit while I am adopting my two stepdaughters. I have the block and tube in route, but the barrel- which will come from Blackhole weaponry- and the Handguard will have to wait until the DOD reimburses me for the adoption expenses. Might be a long delay, but the...
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    An odd AR10 build?

    Re: An odd AR10 build? They aren't replying to emails. Probably swamped
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    An odd AR10 build?

    Re: An odd AR10 build? I am about to order a barrel in .257Roberts for my LR308. To do so the smith needs a bit of info on the gas port. He needs the length and size. I told him to go with rifle length, but size is a mystery to me. I have been advised to look at other rounds similar and the...
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    An odd AR10 build?

    Re: An odd AR10 build? <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LRRPF52</div><div class="ubbcode-body">.257 Roberts was my grandpa's favorite caliber. He built his own rifle chambered in it, a Japanese Arisaka action. He was a master machinist and foreman...
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    An odd AR10 build?

    Re: An odd AR10 build? Sourced a barrel for about $350 all the smith needs is a port size. That I have no clue on. Any ideas out there?
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    An odd AR10 build?

    Re: An odd AR10 build? Well, in light of recent tragic events, I went out and picked up a whole rifle. Carbine actually, a DPMS base model in 7.62. I know something is coming and wanted to make sure I had one before then. I figure it will be used as is for a year or so (wife rule) then I can...
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    An odd AR10 build?

    Re: An odd AR10 build? <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: McCourt Munitions LLC</div><div class="ubbcode-body">257 Roberts has a bit too much body taper, you'll have better chances of making an AI version work. Port location, port size, gas volume...
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    An odd AR10 build?

    Re: An odd AR10 build? <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RufDog</div><div class="ubbcode-body">If the 257 cartridge was worth putting in an AR10 it would have been done by now. Now, if this is a romance cartridge brace yourself for a long drawn out...
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    (100YARD), Semi-Auto, 6groups, 30round SHOOTOUT!

    Re: SemiAuto, 6 groups, 5shot each, 30 round SHOOTOUT! <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jon Lester</div><div class="ubbcode-body">Make sure you have enough time to allow cool time and you will do great. Lack of time and patients is an Enemy of this...
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    An odd AR10 build?

    Re: An odd AR10 build? Big catch: Anyone care to post the measurement of the ejection opening on an AR10? I have been told the .257 case won't fit out through it. Big hindrance. I would like to build a SASS clone as I got to train on it on my last deployment. Maybe a longer tube though to...
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    (100YARD), Semi-Auto, 6groups, 30round SHOOTOUT!

    Re: SemiAuto, 6 groups, 5shot each, 30 round SHOOTOUT! <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: elfster1234</div><div class="ubbcode-body">Good luck deer hunting. I'm sure this post will be around for some time so the next time you get a chance to kick...
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    AR 15 Malfunction.

    Re: AR 15 Malfunction. I have had stuck rounds before from experimenting- unsuccessfully obviously- with neck sizing for an AR. Yeah, I know it wasn't the brightest idea. The solution was to pull the rounds apart, FL size them, and reload. I have used CCI Primers for years (most available)...
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    (100YARD), Semi-Auto, 6groups, 30round SHOOTOUT!

    Re: SemiAuto, 6 groups, 5shot each, 30 round SHOOTOUT! <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: elfster1234</div><div class="ubbcode-body">thos are some damn nice groups, but you are just short one group. sorry friend... see if you can do another target...
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    (100YARD), Semi-Auto, 6groups, 30round SHOOTOUT!

    Re: SemiAuto, 6 groups, 5shot each, 30 round SHOOTOUT! Ok I don't know if this counts, but what the heck, I'll post them up. They were taken last winter after my last deployment for an experiment I did for a article readers on another forum was interested in on light bullets out of fast...
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    Barrel break in? 1st AR-15

    Re: Barrel break in? 1st AR-15 I guess I'm an odd ball then. I follow this procedure for my new barrels 1. Clean the barrel. (boresnake works great) 2. Shoot 5 rounds, 1 minute apart with a boresnake in between each shot 3. Repeat step 2 twice more. 4. Shoot 5 within a minute then clean 5...
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    1/7 vs 1/8 vs 1/9 for a 5.56

    Re: 1/7 vs 1/8 vs 1/9 for a 5.56 I ran a test on my DPMS AR with a 1/9 barrel. I used 40gr bullets to see if throwing them out of a quicker twist (for the bullet weight) would hurt accuracy. I returned from the range with velocities in the 3400fps range and groups of about .375". It actually...
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    An odd AR10 build?

    I was yesterday looking at a forlorn 98 action and adding up the price to turn it into the heavy barreled varmint rifle I dream of. Boy, did it add up! I figure I will have over $1200 in it by the time I am done. So I look over at my current project- another Mauser- in my favorite caliber of...
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