Rifle barrel length question

[TSQUARE]

I understand a 16" barrel and an 18" barrel (same quality) in an AR platform, the 18" would be more accurate due to a longer sight radius. Is an 18" barrel more inherently accurate than a 16" in general. The reason I ask is the Tavor platform. It comes in 16" & 18" lengths, but the sight radius is the same. Will the 18" be more accurate in this case?

 

[jc5420]

Two different barrels with different accuracy potential. Pick one based on what you want, shorter, or a cat hairs more velocity.

 

[dennishoddy]

Yeah, the rule of thumb by pundits is around 100fps per inch.

 

[HiredHand]

Longer barrels are not necessarily more accurate than shorter barrels.

Yeah, the rule of thumb by pundits is around 100fps per inch.

That sounds wildly high for a rifle cartridge.

 

[doctorjj]

All other things being equal, and that's hard to actual do, but anyway, shorter barrels are more accurate due to less flex/harmonics since they will be stiffer.

 

[dennishoddy]

All other things being equal, and that's hard to actual do, but anyway, shorter barrels are more accurate due to less flex/harmonics since they will be stiffer.

Or tune your load to the harmonics of the barrel.

 

[Mkokc]

My 14.5" AR barrels will bang 18" steel all day long at 200 and 300 yards, never noticed any accuracy lost with those, and I don't mind having the shorter rifles, jmo

 

[TSQUARE]

I'm just curious. The bullpup tavor design is already short. I didn't know if going with an 18" was a "no brainer" since it would yield more accuracy but still be shorter than a 16" AR.

Sent from my Nexus 6P using Tapatalk

 

[Jwryan84]

I'm just curious. The bullpup tavor design is already short. I didn't know if going with an 18" was a "no brainer" since it would yield more accuracy but still be shorter than a 16" AR.

Sent from my Nexus 6P using Tapatalk

No diff I accuracy at all, and prob 75-100 FPS diff total, which is nothing. If you haven't shot a Tavor much it's really diff and a really heavy slut while off the shoulder. That along with the def upgrade of the trigger. Great rifle, but I'd look more toward the XM-95 which will cut some weight.

I had mine for a while and ran it in 2 run and guns, just too heavy to lug. Scoped with a 1-6 it shot well but the height over bore sucked on the VTAC wall. I had an aftermarket trigger that helped greatly but cost $350. I dumped it and built a lightweight AR that out preforms it in every category other than overall length.

 

[HiredHand]

I just saw that there are some complaints about the accuracy of the XM-95. It's also sounded like the SAR has so-so accuracy as well.