Why 18 1/2" ?

[ogonzalez13]

Why do people cut there 308 and other caliber rifle barrels to 18.5" and not say 18 or 19? Why I ask, Why? Is it some sort of magic voodoo length? I understand why 16.25" or 16.5", for the, just in case reason, or the, be on the legal safe side reasons, but why the hell 18 and a half?

Thanks.

 

[Graham]

Re: Why 18 1/2" ?

I did mine so it would be 20" OAL with a 1.5" brake.

 

[ogonzalez13]

Re: Why 18 1/2" ?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Graham</div><div class="ubbcode-body">I did mine so it would be 20" OAL with a 1.5" brake.

</div></div> I figured someone would say this. That only brings me to my next question, why 20" Why did you feel the need to get to 20" OAL. Does the rifle just balance better at that length?

 

[Graham]

Re: Why 18 1/2" ?

I wanted 16" of rifling. And yes, it balances the way I want it to at that length with the contour I have.

 

[Jmilera]

Re: Why 18 1/2" ?

18.5 balanced better with my contour barrel and stock. The .5 inch left was done by Nolo in Laredo just in case I wanted to redo my crown or thread it at a later date. He likes to leave a little room to play with,

 

[Terry Cross]

Re: Why 18 1/2" ?

Because if you take 18.5 and multiply it times 2.7 then add 157, then divide by the square root of 9, you get 68.983333333333333333333333333333333333333333333333333333333333333333333333333333333333.... which many speculate is the most snipery number in existence.

No magic or special length. I build a lot of 18.75" .308s. They shoot fast and accurately. With a suppressor mounted, they are the same length or shorter than a factory 26" gun. It just happened to be where I compromised on length, velocity and handling. I do things and choose mods to my rifles that I think cumulatively make them unique to KMW. One could also ask the "Why" question about some of those. I also absolutely LOVE the number 68.983333333333333333333333333333333333333333333333333333333333333333333333333333333333.... as it evidently makes the rifles shoot very F&*^ing accurately.

Have a safe week.

 

[BGE541]

Re: Why 18 1/2" ?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Terry Cross</div><div class="ubbcode-body">Because if you take 18.5 and multiply it times 2.7 then add 157, then divide by the square root of 9, you get 68.983333333333333333333333333333333333333333333333333333333333333333333333333333333333.... which many speculate is the most snipery number in existence.

No magic or special length. I build a lot of 18.75" .308s. They shoot fast and accurately. With a suppressor mounted, they are the same length or shorter than a factory 26" gun. It just happened to be where I compromised on length, velocity and handling. I do things and choose mods to my rifles that I think cumulatively make them unique to KMW. One could also ask the "Why" question about some of those. I also absolutely LOVE the number 68.983333333333333333333333333333333333333333333333333333333333333333333333333333333333.... as it evidently makes the rifles shoot very F&*^ing accurately.

Have a safe week. </div></div>



This is too good, now we all know the secret barrel length.

 

[gstaylorg]

Re: Why 18 1/2" ?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BGEFIVEFOURONE</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Terry Cross</div><div class="ubbcode-body">Because if you take 18.5 and multiply it times 2.7 then add 157, then divide by the square root of 9, you get 68.983333333333333333333333333333333333333333333333333333333333333333333333333333333333.... which many speculate is the most snipery number in existence.

No magic or special length. I build a lot of 18.75" .308s. They shoot fast and accurately. With a suppressor mounted, they are the same length or shorter than a factory 26" gun. It just happened to be where I compromised on length, velocity and handling. I do things and choose mods to my rifles that I think cumulatively make them unique to KMW. One could also ask the "Why" question about some of those. I also absolutely LOVE the number 68.983333333333333333333333333333333333333333333333333333333333333333333333333333333333.... as it evidently makes the rifles shoot very F&*^ing accurately.

Have a safe week. </div></div>


<span style="color: #FF0000">
This is too good, now we all know the secret barrel length</span>. </div></div>


Just make sure you don't drop one of those "3s" when measuring...or it'll never work.

 

[wslowik]

Re: Why 18 1/2" ?

Isn't min. legal barrel length in Canada 18"? I think I remember this when I was researching why a lot of short barrels for M14s were 18.5" and that was the reason I found.

 

[Beef82]

Re: Why 18 1/2" ?

I wanna say Canada regulates rifles the same as shotguns, overall length matters, barrel length doesn't. Seems odd, but you can buy a short barreled pump shotgun as long as the overall length exceeds 26", the real oddity to me, is you can't shorten one, has to be manufactured that way. Semi-autos must have 18" tubes.