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Posted: 10/19/2006 6:09:54 AM EDT
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OK...what are the secrets? What matters? I know there is more that goes into assembling a top performing upper than just snapping the pieces together and torquing the barrel nut on...what are they!?! Assume all top shelf parts are being used. What are the secrets behind: - torquing a flash suppressor on - torquing the barrel to the upper receiver - matching the bolt/carrier group to the barrel - headspacing - etc. Any books or DVDs that cover assembly for performance? I am buying top of the line products (Noveske KX3, Krieger barrel, Vltor block, DD lite rail, LMT enhanced bolt/carrier, and Les Baer upper) and wish to complete the entire assembly as a family project. |
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 WTF kind of rounds are you shooting with that? A 1:7 will stabilize 100grain bullets, and I dont see many using those. The most common HEAVY bullets are 80gr - and 1:8 barrels shot those just fine. The majority of people want to shoot bullets they can actually load in a mag, and for most, that means 77gr and under. 1:8 is a great twist for this. ETA - "ALL bullets"? 40gr nosler bt's in a 1:6.5 ??? |
See below:
No - sometimes that is exactly how it goes. The absolutely key is using a quality match barrel, that has been headspaced appropriately. Then, ensureing it is free floated. That is 95% of the job. Beyond that... as was stated - a bare crown with a match cut is best, and if you want a muzzle device, from most testing the vortex is best in the accuracy department. It is also self tightening so it can be loose. There is no secret to torquing a barrel. Some little tricks, that are arguable... like using locktite around the barrel extension to bed it to the upper receiver.... Your achieving 1/2 MOA are mostly affected by using a quality free floated match barrel, handloading all kinds of different bullets, powders, and primers, until you find what she likes.... and practicing like crazy to be able to even shoot 1/2MOA. Do you handload? Can you already avg .5MOA with a match gun? Your patience and skill level will have every bit as much impact as the weapon. |
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well, it can be pretty easy. I bought one of early RRA uppers in 2002 or 2003. It has a Wilson barrel chambered to Wylde specs. I added a free float tube from Ameetec. It will group 3 rounds under a dime easy as long as they are high quality rounds. If I shoot 5 rounds, it might open up a bit, but its more likely due to me... I can even shoot cheapie 45 grain HP Winchester White box under 3/4 inch with an 1 in 8 twist barrel. If you really wanted to take it to the next level. Go with a 16" bull barrel. .223 or Wylde chamber. Free float tube of course. |
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