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Post by Babaganoush on Feb 27, 2013 16:48:49 GMT -8
Good to know, thanks. Where is a good place to source the clamshell holder? While I don't know of a specific Clamshell Upper Block for the Sportical, (which I have one of), there is this: www.dpmsinc.com/223556-Panthertrade-Receiver-Claw_p_1120.htmlThe product description does mention barrel mounting as one of the functions this vice mounted block supports. It looks beefier than most of this type I've seen. David
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Deleted
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Post by Deleted on Feb 27, 2013 17:03:29 GMT -8
Good to know, thanks. Where is a good place to source the clamshell holder? While I don't know of a specific Clamshell Upper Block for the Sportical, (which I have one of), there is this: www.dpmsinc.com/223556-Panthertrade-Receiver-Claw_p_1120.htmlThe product description does mention barrel mounting as one of the functions this vice mounted block supports. It looks beefier than most of this type I've seen, but no pins. David DON'T, I repeat DON"T try mounting a barrel with this. That is advice from some one who has been there done that.
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Post by Babaganoush on Feb 27, 2013 17:11:54 GMT -8
DON'T, I repeat DON"T try mounting a barrel with this. That is advice from some one who has been there done that. Yeah - I wasn't too certain about this, but your large red type and caps seem to place a totally different emphasis on it. I take it your experience was with a forged upper, and not a billet?
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Post by Deleted on Feb 27, 2013 17:14:51 GMT -8
Good to know, thanks. Where is a good place to source the clamshell holder? While I don't know of a specific Clamshell Upper Block for the Sportical, (which I have one of), there is this: www.dpmsinc.com/223556-Panthertrade-Receiver-Claw_p_1120.htmlThe product description does mention barrel mounting as one of the functions this vice mounted block supports. It looks beefier than most of this type I've seen, but no pins. David DON'T, I repeat DON"T try mounting a barrel with this. That is advice from some one who has been there done that.
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Post by Babaganoush on Feb 27, 2013 17:34:23 GMT -8
Sounds like another example of the axiom "Good judgment comes from experience. Experience comes from bad judgment."
I'd heed Rich's advice, Matt.
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mattri
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Post by mattri on Feb 27, 2013 18:40:54 GMT -8
Sure thing- anyone have a lead on the part I should use and where to pick it up?
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Post by Babaganoush on Feb 27, 2013 21:37:58 GMT -8
Sure thing- anyone have a lead on the part I should use and where to pick it up? Matt, It's certainly couldn't hurt to call DPMS and ask them. After all, they assemble those things and they should be able to tell you what they used to secure the uppers. David
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mattri
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Post by mattri on Feb 28, 2013 4:29:09 GMT -8
Will do.
While I'm swapping barrels I was thinking about going with a free floating handguard. How much of an accuracy improvement is that usually worth?
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Post by Babaganoush on Feb 28, 2013 10:00:00 GMT -8
Will do. While I'm swapping barrels I was thinking about going with a free floating handguard. How much of an accuracy improvement is that usually worth? I can't quantify that with a "minutes of angle" answer, as all rifles are different in the area of free floating. Having said that, it makes sense that removing any external forces that would press against your rifle's barrel would also remove some level of inaccuracy. Virtually every shooter on this forum will tell you that a free floated AR barrel will shoot with fewer flyers and hold better groups. Free floating removes one more variable from your shot preparation. If you'd like to read some examples, there is plenty of evidence on some of the boards where people have written about their experiences replacing their hand guards with free float tubes. In my case, I've never owned an AR without a free float tube, and they all shoot sub-moa. My .223 will shoot 1/2 or 1/4 moa if I control caffeine intake, and my .264LBC shoots roughly 3/4 moa. As usual, YMMV. David
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Post by GLSHOOTER on Feb 28, 2013 10:58:09 GMT -8
My experience in the old days was I would see about 1/2-1 MOA smaller groupings with the FF tube over the standard set up. Now that was the OLD DAYS. Barrels are shooting far better now and even the regular rigs are stellar at times. My goal would be 1/2 MOA with a new one. Getting a full MOA out of one would be very difficult IMHO.
Greg
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mattri
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Post by mattri on Feb 28, 2013 15:46:35 GMT -8
Thanks. I pillar bed all my bolt guns and make sure the barrel is floated, but new to the ar scene so didn't know if it mattered much.
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mattri
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Post by mattri on Feb 28, 2013 16:17:07 GMT -8
Ok it turns out the Sportical is a carbine length gas system, and the barrel has an od of .642". So would this barrel be a good fit? www.blackholeweaponry.com/catalog/product_info.php?cPath=22&products_id=34It would keep the same length gas system correct? If I used the stock hand guard for now would it be a pretty straight forward swap? Would I need a different gas block?
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Post by GLSHOOTER on Feb 28, 2013 20:57:39 GMT -8
Ok it turns out the Sportical is a carbine length gas system, and the barrel has an od of .642". So would this barrel be a good fit? www.blackholeweaponry.com/catalog/product_info.php?cPath=22&products_id=34It would keep the same length gas system correct? If I used the stock hand guard for now would it be a pretty straight forward swap? Would I need a different gas block? It will fit. You will need a new GB. The gas system will swap fine. Greg
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