300 whisper

pingi333 · Post by **pingi333** » Thu Dec 10, 2009 10:39 am

Anybody here of any body who has a 300 whisper/firearm barrel?

Thanks

hjustein · Post by **hjustein** » Thu Dec 10, 2009 11:15 am

yes.

Ive got an SBR AR built up in 300 whisper, and I am making a whisper barrel for my CZ-527.

What do you want to know?

CKOD · Post by **CKOD** » Thu Dec 10, 2009 11:54 am

I'm waiting for funding to accumulate, and I'll be ordering a 300 whisper AR barrel from a custom barrel maker sometime soon. I have the upper reciever and everything ready, just missing the barrel, and optics.

Gunsmith.JM · Post by **Gunsmith.JM** » Thu Dec 10, 2009 11:55 am

CKOD wrote:I'm waiting for funding to accumulate, and I'll be ordering a 300 whisper AR barrel from a custom barrel maker sometime soon. I have the upper reciever and everything ready, just missing the barrel, and optics.

If you don't mind me asking, who will you be using and what price are you going to pay for it?

pingi333 · Post by **pingi333** » Thu Dec 10, 2009 11:59 am

will any of you guys sell me their AR 300 Whisper barrel? Please. I will pay premium. I would prefer not wait till mid January to get one from Noveske or SSK.

PRETTY PLEASE

pingi333 · Post by **pingi333** » Thu Dec 10, 2009 12:03 pm

CKOD wrote:I'm waiting for funding to accumulate, and I'll be ordering a 300 whisper AR barrel from a custom barrel maker sometime soon. I have the upper reciever and everything ready, just missing the barrel, and optics.

I piked up a DPMS to build a dedicated 300 Whisper.

CKOD · Post by **CKOD** » Thu Dec 10, 2009 12:08 pm

Gunsmith.JM wrote:
CKOD wrote:I'm waiting for funding to accumulate, and I'll be ordering a 300 whisper AR barrel from a custom barrel maker sometime soon. I have the upper reciever and everything ready, just missing the barrel, and optics.
If you don't mind me asking, who will you be using and what price are you going to pay for it?

Dedicated technology, and it'd end up ~$460 with a threaded muzzle. But Thats a custom contour, (since it has a pistol position gas block). Not cheap, but I just spent ~450 on a noveske barrel for my 5.56 upper, so why should I cheap out on this?

Probably a little more then $460 now that I think of it, because I'm going to get him to pin my gas block in place (its set-screw at the moment, which I'm not a fan of, if it were split and a clamp on type, that'd be alright, but not just a set screw)

CKOD · Post by **CKOD** » Thu Dec 10, 2009 12:09 pm

pingi333 wrote:
CKOD wrote:I'm waiting for funding to accumulate, and I'll be ordering a 300 whisper AR barrel from a custom barrel maker sometime soon. I have the upper reciever and everything ready, just missing the barrel, and optics.

I piked up a DPMS to build a dedicated 300 Whisper.

DPMS upper or whole AR and you wanna do a second upper? When I first started all I could find was a cheap oly barrel on del-ton and 8 months later I canceled my order which hadnt shipped yet. (but they sure charged my card ASAP....)

pingi333 · Post by **pingi333** » Thu Dec 10, 2009 12:17 pm

Yeah, I picked up a whole DPMS rifle to do a build. Every barrel maker I called said no or wait till January. Model 1 sales said they have one in stock but they wont ship for 6 weeks cause they were backed up. Screw them.

hjustein · Post by **hjustein** » Thu Dec 10, 2009 3:16 pm

guys, I build barrels, including AR barrels.

I dont really advertise because I don't have the time to do a lot of them, but if anyone needs a whisper barrel built feel free to shoot me an email and I can most certainly get it made faster than what you are talking.

pingi333 · Post by **pingi333** » Thu Dec 10, 2009 5:12 pm

hjustein wrote:guys, I build barrels, including AR barrels.

I dont really advertise because I don't have the time to do a lot of them, but if anyone needs a whisper barrel built feel free to shoot me an email and I can most certainly get it made faster than what you are talking.

man, a couple of hours too late. I just picked a complete upper. Not what I was looking for but I guess I will have a spare upper. Then I commuted to buy another upper on ar15.com. I guess I will have 2 spare uppers.

Gunsmith.JM · Post by **Gunsmith.JM** » Thu Dec 10, 2009 7:44 pm

CKOD, you have a PM

L1A1Rocker · Post by **L1A1Rocker** » Thu Dec 10, 2009 9:08 pm

What would be a good length for an AR 300 whisper barrel?

Gunsmith.JM · Post by **Gunsmith.JM** » Thu Dec 10, 2009 9:25 pm

L1A1Rocker wrote:What would be a good length for an AR 300 whisper barrel?

I've heard anything from 7 to 16 but I have a 1-10, 16" bolt action which stabilizes anything up to 200gr in subsonic. Nice thing is that it throws a 150gr with some authority at close to 1900fps. Good enough for close range deer.

I used to have a 1-8, 11.5" AR15 barrel (had a pinned custom faux XM177 flash-hider for legal length) which was absolutely great for everything up to 240's. Although they did start to show partial signs of instability out around 200yds. The 11.5" was much easier to load subsonic but I still had the flexibility of using a pretty wide range of powders, unlike the ultra-short barrels (flash of unburnt powder).

redtazdog · Post by **redtazdog** » Thu Dec 10, 2009 10:22 pm

L1A1Rocker wrote:What would be a good length for an AR 300 whisper barrel?

Funny you ask as I talked to JDJones the master of the 300 whisper
2 days ago and asked him the same question.
JD said a 10" to 16" barrel is best for suppressor use but he has made
them as short as 8" for customers that dont care about stability past
100 yrds.

J Krammes · Post by **J Krammes** » Fri Dec 11, 2009 12:01 am

redtazdog wrote:
L1A1Rocker wrote:What would be a good length for an AR 300 whisper barrel?
Funny you ask as I talked to JDJones the master of the 300 whisper
2 days ago and asked him the same question.
JD said a 10" to 16" barrel is best for suppressor use but he has made
them as short as 8" for customers that dont care about stability past
100 yrds.

Did you guys talk twist rate?

Jeremy

redtazdog · Post by **redtazdog** » Fri Dec 11, 2009 12:15 am

J Krammes wrote:
redtazdog wrote:
L1A1Rocker wrote:What would be a good length for an AR 300 whisper barrel?
Funny you ask as I talked to JDJones the master of the 300 whisper
2 days ago and asked him the same question.
JD said a 10" to 16" barrel is best for suppressor use but he has made
them as short as 8" for customers that dont care about stability past
100 yrds.
Did you guys talk twist rate?

Jeremy

I had the twist rate talk with him around 15 years ago when i made my
first barrel purchase from him.

-k- · Post by **-k-** » Fri Dec 11, 2009 9:33 am

[/quote]I used to have a 1-8, 11.5" AR15 barrel (had a pinned custom faux XM177 flash-hider for legal length) which was absolutely great for everything up to 240's. Although they did start to show partial signs of instability out around 200yds.[/quote]

I would go with a 7 twist for the 240gr bullets.

CKOD · Post by **CKOD** » Fri Dec 11, 2009 9:42 am

-k- wrote: I would go with a 7 twist for the 240gr bullets.

Have you seen 1 in 7 around anywhere? Most blank makers Ive seen sell down to 1 in 8 in .308 dia barrel blanks, but not 1 in 7.

Artful · Post by **Artful** » Fri Dec 11, 2009 9:57 am

CKOD wrote:
-k- wrote: I would go with a 7 twist for the 240gr bullets.
Have you seen 1 in 7 around anywhere? Most blank makers Ive seen sell down to 1 in 8 in .308 dia barrel blanks, but not 1 in 7.

http://www.pac-nor.com/barrels/

30 (.308") twist rates (bold = standard twist barrels)
2 groove 16"
3 groove 6.50" 7" 7.50" 9" 10" 12" 13" 14" 15"
4 groove 10" 11"
5 groove 4" 7" 8" 9" 10" 11" 12" 13" 15" 17" 18"
6 groove 8" 14"
Polygonal 8" 10" 12"

in 3 groove and 5 groove they make 1:7
heck they make a 1:6.5 in 3 groove and a 1:4 in 5 groove

CKOD · Post by **CKOD** » Fri Dec 11, 2009 10:21 am

Holy s--t, 1 in 4? Time to make an underwater rifle that also shoots alright above water too

because that projectile is going to be 4" long.

redtazdog · Post by **redtazdog** » Fri Dec 11, 2009 11:02 am

-k- wrote:

I used to have a 1-8, 11.5" AR15 barrel (had a pinned custom faux XM177 flash-hider for legal length) which was absolutely great for everything up to 240's. Although they did start to show partial signs of instability out around 200yds.[/quote]

I would go with a 7 twist for the 240gr bullets.[/quote]

I had a 1:7 and sold it because in made small holes shooting 240's at
300 yrds ( bullets dont tumble when shooting at a solid target.
The 1:8 I have is stable past 300 through paper and tumbles
like I want if the target is more solid like a thick cardbaord box
or plywood.

CKOD · Post by **CKOD** » Fri Dec 11, 2009 12:02 pm

redtazdog wrote: I had a 1:7 and sold it because in made small holes shooting 240's at
300 yrds ( bullets dont tumble when shooting at a solid target.
The 1:8 I have is stable past 300 through paper and tumbles
like I want if the target is more solid like a thick cardbaord box
or plywood.

Sounds just right, what was the muzzle velocity of those loads? I was planning on 1 in 8 for my barrel, and definitely want it to be stable though the suppressor, but tumbling when it hits something is fine by me

-k- · Post by **-k-** » Fri Dec 11, 2009 12:51 pm

I don't want to put a bullet sideways through my can, while you don't have to worry about it.

Bullets will not be stable in a liquid at anywhere near the RPM we are talking about. Therefore they should have the same tumble from a 7 or 8 twist if you are shooting game.

Artful · Post by **Artful** » Fri Dec 11, 2009 1:41 pm

Actually the 240 SMK in my 1:8 will tumble in game better than the same bullet in 1:7 twist as it's just marginally stable - I haven't tried shooting beyond 100 M with mine to see if it's still stable.