OMG! Try making a decision about an 18" SPR barrel!!!

[Cameron]

I was at the range the other day chronoing some loads and calculating dope for my 16" Recce build and I was thinking about my other 16" that really doesn't get much range time, it got me to thinking about re-barreling it, as I have two that have 16" barrels and are pretty much identical otherwise, one is a Daniel Defense complete upper that has a Lothar Walther Stainless LW50 .223 Wylde chamber 7" twist and a matched bolt, and the other has a Colt HBAR 5.56NATO chamber and 9" twist, the barrel came from a Colt 6721.

Daniel Defense 16" Recce build


Colt HBAR that I want to put an 18" barrel in


So I am looking to re-barrel the Colt with an 18" SPR type barrel like Noveske's, White Oak's, Rainier Arm's (Shilen) UltraMatch, JP Enterprises Supermatch or some other stainless match type 18"

I was wondering if anyone has info or opinions on the various options like Noveske’s Match Mod 0 chamber and intermediate length gas system versus the .223 Wylde chamber and mid-length gas in the others or a 8" vs. a 7" twist. I will probably top it with a Leupold Mark 4 3.5-10x40mm LR/T M3 Illuminated Scope when the budget allows. I would like the Daniel Defense 12.0 Life rail to cover the gas block and I am not sure if the Noveske "intermediate" gas will be too long. It will be used for rifle and 3-gun competitions, I'm not really looking for a military SPR clone.

So any thoughts on the chamber, the twist rate, muzzle device etc would be appreciated, and may help anyone else looking to dump 77gr happy pills into targets at 800 meters.

I had never seen these before but is will mean I would effectively have rifles exactly like Rainier Arms CQB, Recon and SPR uppers. It would have saved me a lot of time and money if I had seen them earlier!

Anyone want a Colt 16" HBAR barrel let me know...

Cameron