Will a fluted bartlein #3 (heavy sporter) suffer with a can at 17 inches?

[Nivium]

Looking to get a heavy sporter (#3) contour bartlein SS barrel in 308. Will be run with a TBAC dominus or magnus nearly 100% of the time. Going to be fluted and cut to 17.5 inches so diameter and shoulder will be fine for threading. But, my concern is that with a fluted sporter, it might not be stiff enough to keep precision without messing up the harmonics when the can is hanging off the end, but with a 17 inch bbl, might not be a problem.

Any experience with a similar setup? Any notable POI shift or loss in accuracy resulting from the relatively lightweight barrel with a can? The purpose is to cut weight, and my rough maths say I will save more weight with a fluted #3 than with a 16 or 18 inch carbon fiber sendero or sendero light bbl, and I'll save (a little) money. I'm happy to be corrected on that.

Thanks in advance

 

[b6graham]

will a normal #3 work well enough for threads at 17" instead of the normal #3b?

are you cutting a longer #3 down from like 24/26" barrel?

 

[Nivium]

will a normal #3 work well enough for threads at 17" instead of the normal #3b?

are you cutting a longer #3 down from like 24/26" barrel?

According to bartlein, a normal #3 heavy sporter will be fine for threads at 17". I'm avoiding the #3b for weight purposes.

It will be a standard #3 blank (starting at 26 inch, I think) chambered, cut to 17.5 inches, and threaded.

 

[b6graham]

According to bartlein, a normal #3 heavy sporter will be fine for threads at 17". I'm avoiding the #3b for weight purposes.

It will be a standard #3 blank (starting at 26 inch, I think) chambered, cut to 17.5 inches, and threaded.

that's what i figured you were doing

 

[samson7x]

I have a 22" fluted #3 threaded 5/8-24 and its perfectly happy being suppressed. Not that it matters, but mine is 300wm, not 308.

 

[M_R_Woodard]

20 inch #4 mullerworks 10 shots at 100 yards with a Harvester Evo. About the same as a bartlein 3b.

 

[cooper_257]

I have ran a Bartline 3b at 24" with heavy deep spiral fluting and a suppressor. It works awesome. A #3 contour at 17.5" would be stiffer and will work great suppressed.

 

[XTREM HTR16]

I would flute it. Cool is always king.

 

[holy cow]

If you are going with a #3 contour that short I would not waste the money in fluting it. Back in the day I used to have just about all my barrels fluted. People can say what they want but my opinion is all it does is empty the wallet.

 

[Slowshot18]

On short barrels, fluting is not going to remove much weight. There is aggressive fluting that is actually pretty cool from LRI, but not sure if you can use it on a thinner profile barrel. The cost to weight reduction on fluting did not make sense in my eyes when I could just buy carbon and maybe be in the same weight range.
But, I did end up building a 16.5" 6 creed with a bartlein #3b.
Weight of full length 3B barrel blank: 4 lbs 7.7 ounces
Weight after chamber, chopped to 16.5", and muzzle thread: 2 lbs 14.6 ounces

Another short barrel for reference from my experience: 18" Bartlein carbon varmit contour, chambered in 6.6 PRC
Before chamber and thread: 2 lbs 12 ounces
After chamber and thread: 2 lbs 7 ounces