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Posted: 8/29/2016 7:46:52 PM EDT
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Looking forward to build a spr kind upper with a custom 18” inch barrel, rifle gas system. I will shoot with a suppressor and that is why I prefer a naturally short gassed rifle gas. I want the barrel to be stiff for both accuracy and suppressor POI shift reasons. I am not happy with my current 20" FN made barrel. Its government profile is not stiff enough. I am deciding among the three profiles but can’t make my mind:
SPR profile; 2.35 lbs National match profile (Ø.97” under handguard and Ø.750 gas block); 3.1 lbs Semi bull profile (taper from Ø.97-.93” under hand guard and Ø.875 gas block, Ø.860 to muzzle); 3.3 lbs I know the heavier one is also stiffer, but, decisions are difficult to make. Someone help me to get the semi-bull profile out of my mind. I'm afraid it is too heavy. Which one to pick for mostly bench shooting and occasion hike in the woods ? Thank you for your time. |
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If I ever planned carrying my rifle more than just to and from a bench, I would choose the SPR profile. If you're not wanting to achieve maximum accuracy and barrel life, go with a reputable barrel maker and the bull profile.
The SPR is plenty stiff enough for a can. Personally, I wouldn't want anything heavier than a SPR, but that's me. Lot's of people shoot bull profiles, Molon has posted excellent results of his. I just feel it paints the rifle in a corner, and looses some of it's handiness. Again, just my preferences. |
| Just remember... accuracy comes from the quality of the rifle bore, chambering, and muzzle crown/threads. The weight of the barrel/profile ONLY changes the amount of droop with a silencer attached and how many rounds you can fire before it gets hot enough to effect accuracy and must be allowed to cool. Heavy weight does NOT equal more accuracy. |
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If you don't need one of those specific profiles for the ops Inc 12th suppressor or to comply with competition rules etc. I'd just get one of the Larue 18" barrels.
The Larue is Mid-length but for a suppressor I'd be running an adjustable gas block anyways. (SLR rifleworks sentry 7 .450 spacing fits the Larue barrel) Anything over 2.5 or so lbs for an 18" barrel is too heavy imho. The rifle becomes heavy to lug around and even worse to shoot. |
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