18" vs 16" PTR-91...I am about to order one!


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crash32
December 25, 2008, 11:16 PM
I am about to order one right now and I have a choice between the 18" PTR-91 rifle or the 16" PTR-91 carbine.

I was wondering which one you guys had and if there is an accuracy difference between the two models? I think I would rather get the 16", but not if it is going to significantly influence my accuracy at 100 yards. What do you guys think?

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Deer Hunter
December 25, 2008, 11:24 PM
I would go with 18". I own a FAL with an 18" barrel and it's still very handy.

Min
December 25, 2008, 11:25 PM
I would get the 16" barrel.

crash32
December 25, 2008, 11:31 PM
So we have one vote for the 16" and one for the 18". I guess it comes down to a few things.

Will the 18" be noticeably heavier?
Will the 16" compromise accuracy?

Of course...which one looks cooler... a shorter evil rifle or a longer badass rifle haha.

Golden Hound
December 25, 2008, 11:35 PM
I go by the philosophy that a longer barrel is always better, personally, just because it's more manly. If it's too heavy, lift some weights, and then it will feel lighter as you get stronger. :p

Min
December 25, 2008, 11:39 PM
If you're going to get a PTR-91, it's because it is an evil black rifle, not because you are going to be a long-distance shooter with it.

16" barrel is evil. :)

crushbup
December 25, 2008, 11:45 PM
IMHO, the 18in barrel will still be quite handy, you'll get a tidbit of a velocity boost, and recoil will be somewhat reduced. I've never fired one with a 16in barrel, but whatever you do, never fire one with a G3 collapsible stock- it leaves a mark.

marktx
December 26, 2008, 12:06 AM
It's a lot easier to get different front hand guards for the 18" model and the overall length of the rifles only decreases by 1 1/4 inches with the 16" barrel.

Floppy_D
December 26, 2008, 12:17 AM
Given the heft, 18" is plenty small. That's a real tank, enjoy it as such.

jpwilly
December 26, 2008, 12:32 AM
Get the 16"!

Big Bill
December 26, 2008, 12:43 AM
Get the 18"!!! Size Matters!

crash32
December 26, 2008, 01:23 AM
What about accuracy? At 100 yards do you guys think that there would be any noticeable difference?? I know that this is not the world's most accurate rifle, but I'd still like for it to be somewhat accurate!

Bartkowski
December 26, 2008, 01:32 AM
There shouldn't be any difference in accuracy between the two. Accuracy has more to do with the barrel's quality and how rigid it is. I don't own either size gun, but if I were to buy one would get the 18".

The 18" would make the gun a little quieter and there would be a small velocity increase. Both of which are worth decrease in handiness to me.

chipp
December 26, 2008, 01:36 AM
18 is pretty short already I'm voting 18

stubbicatt
December 26, 2008, 09:35 AM
Get the 18" barrel. 16" is a little short for 308.

About long ranges, and some sort of limitation on range because the PTR is an "evil black rifle," I've shot prairie dogs with mine at 400+ yards. I haven't gone to 600 yet, but I have no doubt it will go that far readily.

FuzzyBunny
December 26, 2008, 09:52 AM
I would go with 18" but thats me.

Dr. Tad Hussein Winslow
December 26, 2008, 11:08 AM
I'd want a 20" at least, but 18 beats 16 any day for that chambering. The flash and blast are horrendous from a 16", not to mention increasing recoil.

Runningman
December 26, 2008, 11:25 AM
My vote is for the 18" .

Grayrider
December 26, 2008, 12:08 PM
Most gun makers use a 16 1/4" barrel for "16 inch" barreled guns, so you are talking 1 3/4" difference. I prefer the 18" as it is just barely longer and gives you a bit more velocity. Two of my FALs are 18", one 16".

John

crash32
December 26, 2008, 12:12 PM
"The flash and blast are horrendous from a 16"

Well, thats exactly what I want lol!!!! Even with that being said I think as of now I MIGHT go with the 18 inches, but the increased blast and flash from the 16" is sounding really cool right now :)

Dr. Tad Hussein Winslow
December 26, 2008, 12:18 PM
Then by all means, you need the 16"!! :)

Jaws
December 26, 2008, 04:06 PM
Get the 18". Unless you plan to clear rooms, there's no reason not to use the more speed that a longer barrel offers.

Maverick223
December 26, 2008, 08:29 PM
Out of any .308 I would go with a longer barrel, at least 18" preferably 24"...I want a 32" barrel.:D

Martyk
December 26, 2008, 09:18 PM
Cmon now... this is rifle country... all you guys know that the longer barrel is more accurate (of course the quality has to be there). I picked up my PTR91 Perimiter Rifle w/ 18" fluted match barrel a few weeks ago. It is an awesome rifle. The .308 cartridge with the 18" barrel is going to give you better velocity, better accuracy and ballistics. If you ever want to shoot beyond 100 yards, the 18" barrel's difference will only be amplified. Are you planning to reload? If you are, you will want to also invest in a port buffer to (almost eliminate) brass damage. It shoots smooth & sweet. I'm really surprised at how comfortable it is for a .308. You can shoot this rifle all day.

Good luck w/ your decision and have fun w/ your PTR.

crash32
December 26, 2008, 10:37 PM
Thanks for the input guys, it was very helpful. I was actually 50/50 which was killing me until I found out that Atlantic Firearms is 100% sold out of both the 16" and 18" and CDNN only had the 16" which made my decision easy!

Atlantic Firearms
December 27, 2008, 08:36 AM
The PTR rifles are great you will be happy wiht the PTR 91 K !!!

HankC
December 27, 2008, 09:28 AM
Get a 16" if you like a fire ball muzzle blast. Get 18" if you want a more efficient 308.

Lloyd Smale
December 27, 2008, 09:53 AM
absolutely false. A shorter stiff barrel will allways outshoot a longer one when it comes to accuracy. Less vibrations and whip in a shorter barrel. that is why most bench rest competitors use a short heavy barrel.


--------------------------------------------------------------------------------

Cmon now... this is rifle country... all you guys know that the longer barrel is more accurate (of course the quality has to be there). I picked up my PTR91 Perimiter Rifle w/ 18" fluted match barrel a few weeks ago. It is an awesome rifle. The .308 cartridge with the 18" barrel is going to give you better velocity, better accuracy and ballistics. If you ever want to shoot beyond 100 yards, the 18" barrel's difference will only be amplified. Are you planning to reload? If you are, you will want to also invest in a port buffer to (almost eliminate) brass damage. It shoots smooth & sweet. I'm really surprised at how comfortable it is for a .308. You can shoot this rifle all day.

Good luck w/ your decision and have fun w/ your PTR.

Martyk
December 27, 2008, 07:30 PM
Then why don't they use a 12" barrel? And why are "6 guns" with long barrels (above 4") made. And how about the Thompson Contender, has anyone told them?

You can't change physics. The reason that the longer barrel is more accurate (velocity issues aside) is because it offers additional rifling engagement which will improve bullet stabilization. Barrel whip is a misnomer. A longer barrel has more steel which will in turn dampen harmonics.

I don't shoot competition so I don't know about your claim that competition shooters prefer short barrels. It may be the case for certain types of events or cartridges but that's a far reach to make a general claim that shorter is better than longer.

Hold on I just checked with my wife.... Yep, she confirmed.. longer is better :D

Happy New Year !!

Dr. Tad Hussein Winslow
December 27, 2008, 07:42 PM
Well, both are true. More rifling engagement from 1" on equals more stabilization - up to a point, then gets severely diminishing returns. A shorter barrel coming down from 35" or 40", let's say, provides more stiffness - up to a point, then gets severely diminishing returns. That's why neither extreme is the best; the optimal is somewhere in between. Evidently, with a *sporter weight* barrel, the optimal point comes in at right about 21.75" for best accuracy. Intensive research has confirmed that the goldilocks point is somewhere right about in there. With heavier barrels, it's a bit longer, at 24 inches or more, depending upon HOW heavy the barrel is. It's a complex calculus of interconnected and competing factors affecting accuracy. But you CAN generalize:

For barrels between 1" and 15", a longer barrel will tend to be a bit more accurate, ceterus paribus.

For barrels between 20" and 40", a shorter barrel will tend to be a bit more accurate, ceteris paribus.

For between 15" and 20", it's about a wash - I don't know if you can even say.

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