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Hi,

Probably going to need to replace my barrel soon.

Currently using an 18", 1 in 8.

Is an 18" inch barrel better? (ranges out to 400 yds.)

Thanks.

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Doesn't matter. If 400 is your max I'd consider a 14.5".

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Better? Maybe, maybe not.

Different? Almost certainly.

 

A shorter barrel should give you a little less velocity, a little more noise, a little less weight up front (assuming same barrel profile), 2" easier to maneuver in tight quarters and 2" cooler looks (IMO).

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The difference in velocity is going to be basically negligible between the two lengths. 16" will be a tad lighter and easier to maneuver; 18" lets you run a rifle-length gas system, which generally lets you get a slightly softer recoil impulse. Depends on which of those you value more.

 

Personally, I tend to prefer an 18" barrel with rifle-length gas. I've never found it to be too unwieldy, and the weight isn't too big of a concern if you don't have a heavy profile. But far better shooters than me have plenty of success with a 16" or 14.5" (or even shorter).

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I prefer a 16” barrel, for me it seems easier to swing towards targets, I previously had an 18” and find no accuracy difference or to much velocity loss when shooting out to longer distances with the shorter barrel.

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I've run 20" barrels like forever and they are in no way a handicap! All 556X45MM has going for it is velocity, might as well get what you can!!!!

 

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13 hours ago, kurtm said:

I've run 20" barrels like forever and they are in no way a handicap! All 556X45MM has going for it is velocity, might as well get what you can!!!!

 

What he said.  :cheers: 

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I have an 18" rifle gas and a 16" mid gas and always grab the 18"

The 18" shoots smoother and once the buzzer goes off, I don't feel the weight at all. 

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I'm running a double fluted 18" barrel and I'll tell you what, it is light and fast for a 18" gun. I've found that the rifle length gas really smooths out the recoil impulse. With that said, I would like to build a short rifle with a 13.7 or 14.5 for the one club I shoot at. There is nothing but bays, I think the farthest is something like 125? But I have shot my 18 and dont really feel at any disadvantage running it, just want to try something new.

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