300 Whisper Owners... Please sound off!
 

We are having a huge number of people that click here and move on without posting. Please take a second and post about your 300 Whisper (or clone), what you use it for, and your experiences with the round...

From the statistics I have running it looks like we have had about 1000 people come to this forum and we only have two posts...

I get the first real/non quoted post on the new thread!!!

I just received my Model1sales 300-221 A.K.A. whisper 16" CAR, A2 flashhider, Free Float Handguards, A3 Flat-top upper, jard single stage 1.5# trigger.

From the old forum :
--Chris

I have two:
A custom 1:8 AR 16" platform w/AAC can
I am curently building a 1:6.5 twist 16" folding stock on a Savage action. Barrel is in, just need to get the action to Marty.

1/8 AR gun here as well. Built on a DPMS lower, using M1S flat top upper.

http://img.photobucket.com/albums/v3...15parts037.jpg
http://img.photobucket.com/albums/v3...ogsleep016.jpg
my 308, but is the blueprint for my 1:6.5 whisper

Hi;
First post. I'm intrigued by this round and it's family. I ordered a barrel from Fox Ridge (TC) for my Encore just today.
I'm looking for something quiet to hunt whitetail in my back fields. Each year they build more and more homes in the area. Not that what I do is illegal, but the noise of a full-boat .308 at 06:30 sends mothers of small children ballistic (so to speak!). I'd just like to avoid the hassle with any neighbors and/or the police.
I'd like to hear from folks who have hunted with this round loaded subsonic, and how effective it is in the real world.
Are folks happy with the Model 1 brand upper A3?
I have a Colt Sporter "Competition H-BAR", Ser. CH003xxx that was made about the time of the "Ban". It has a screw-on flash suppressor, but no bayonet lug. Can anybody tell me if this is a pre-ban or post-ban gun?
Thanks.

Hi all,
I'm shooting a Contender with a SSK 10" bull barrel (1:8 twist) primarily using subsonic loadings with Sierra 220 gr and 240 gr MatchKings. Brass is Rem 221 Fireball, primers are Federal, and dies are Hornady. I originally got into the 300 whisper for the sole purpose of using it to develop suppressors (I’m a part time gunsmith and Class II manufacturer). However it is such a pleasure to shoot and the accuracy is so impressive, I wish I would have bought it a long. Most of the loads I’m shooting were developed using Quick Load and, so far, the most accurate has been Vit 3N37 with a Sierra 220 gr MK at around 1000 FPS (this load yields a load density of around 61%). The extreme velocity spread for this load has been around 12-15 FPS and group size has been around 3/8” to 1/2” at 50 yards (I currently have an Aimpoint M2 1X with a 4 moa dot which hampers accuracy testing at much beyond 50 yards). Another powder that has tested well so far has been Alliant Herco with the same bullet (load density is around 81% and extreme spreads around 10-15 FPS).

I now have 300 Whisper reamers in house and the next project will be a suppressed version built on a Rem 700 SA platform. I’m glad to know there’s finally a place for the Whisper crowd to hang out.

http://img.photobucket.com/albums/v3...15parts079.jpg
http://img.photobucket.com/albums/v3...15parts078.jpg

my latest project is almost done, just need to duracoat the barrel.
16.5" PacNor 1:7 twist 5 grove barrel done by Marty at Teppo Jutsu in 30/221
My SWR can. I also have been working with the 338 Specter, very cool, 338 subsonic in a AR platform.

WOW! A forum for the Whisper.

I have been shooting the 300 Whisper for over 10 years but never new about this forum till recently.

I have one of JD's early uppers (I think it's #6) and a Contender carbine bbl as well. Also have one of his early cans (my first NFA purchase) that fits both guns.

Mostly shoot the 220gr Sierra MKHP in Rem 221 FB brass with Rem 7½ primers and AA 2015, H110, AA #9 powders with very good results.

Played with the Nosler 125 gr Ballistic Tips with sub MOA accuracy.

Working up loads with the Sierra 220 RN now.

Lastest projest gun is a bolt action Rem 788 with Hart 1:8 bbl in a McMillan A2 stock that feed from an AR-15 20 rnd mag and fitted with Joe Gadinni's excellent SWR Omega can but am contemplating having a custom can built that uses 45 ACP baffle stacks but bored for 30 cal made of aluminum with either stainless or Inconel first baffle and stainless threaded rear cap.

Thanks for the great forum.....there is always so much more to learn and share and I'm sure I'll benefit from the experience.

Let me know if you get a good load for the 220RN, I have not been able to get a good group past 50m(in an AR and bolt gun platform) and have had issues with them feeding.
I have discusssed a lightweight can tuned for subsonics with SRT, using the Aztech baffle system. He has the specs ready to go. I am just waiting for my other cans to clear the ATF before I commit to another can.

my rifle
 

my rifle is as follows, remington SA trued and blueprinted,20inch lilja 8twist,hs thumbhole stock,hs magazine kit,nightforce bases and rings with a leupold MK4 4X14X50 M1 with the side focus and illuminated reticle.have a suppressor being made and just waiting for the ATF to give me the approval.So far I have shot it with factory corbon 220subs ans was very impressed with the way it shot.I did shoot some 125noslers with H110 and got some great groups and 2350fps,i am planning on working up a load with the 150nosler accubonds this week for a upcomming hog hunt. I have to say its one of the most fun rnds i have ever shot,its hard to not go through some serious ammo with it.

Jared in Va

300 Whisper
 

I have an 18" SSK Carbine. I primarily shoot 125-130 grain jacketed bullets over 20 grains of 296. It is very accurate and easy to shoot. I have recently been playing around with some 200 grain cast sub sonic rounds, they are not MOA but stay inside of 2" at 50 so are fun to plink with and smack the steel plate with authority. I plan to shoot a feral hog with it week after next, 125 BT @ 2300 fps, should work out well.

Ordered a 300whisper encore barrell today for my encore(I bought a frame today-No barrell in stock :( ) . I got an 18inch Fox Ridge barrell as that was a little easier on my budget than the ssk version. Wow cant wait till it gets here. I plan on shooting the factory Corbons till I can get set up to reload it. I sadly cant use a suppressor in my state for hunting which is what I want it for anyway. I will post when the barrell arrives to let every one know how it all works out.

Hi everybody,

working on my 300 whisper config, so far I have the A3 flat top and the 300 whipser barrel / suppressor. Just need to finish building it. BArrel is about 12.5" long. It was SS and I just refinished it in socom flat black from Norrell.
Planning on adding a LArue 9.0 rails and gas block, Vortex FH and Adjustable gas Tube.

Sig 551 SWAT
 

Hi guys, I have been on this forum for some little time now.
I currently have a Sig 551 SWAT under construction by my local gunsmith.
The .223 remington barrel is gonna be replaced with a nice 16" Lothar Walther barrel.
The gas port might need minor adjustment, but has the advantage to be set in two different modes.
Sig originaly made this, so a fouled weapon could be more reliable.
I am now gonna be using this system to switch between Supersonic and subsonic loads.
By the way, a Sig normally destroys the cases, so my case deflector is gonna be modified as well.
I might send in some pictures in the near future.

My Whispers
 

Hey guys, I am new here, just found the forum recently. I got a couple 300's. The first one I bought is a 14 inch factory TC contender barrel. It has 300 Whisper marked on the barrel. I don't think they can mark them as 300 Whisper anymore. I got a die set with the barrel, RCBS, also marked 300 Whisper. It has a silver Bushnell Trophy 2x6 scope on it. It is probably the most accurate factory pistol barrel that I own. I have numerous groups in different bullet weights that are 3 and 5 shot groups at 100 yds that are less than an inch. This barrel loves Nosler BT's, 125's, 150's, 165's you name it. I have one 3 shot group with the 165's, and AA1680 that measures .770 at a distance of 175 yds.

The second barrel is a VVCG barrel. 16.5 inches long, 1 inch full bull, stepped back to fit the Contender frame, 1:8 inch twist. I have a Vari-x II 3x9x40 on it. I have not shot it that much, but I had bought a box of each of the bullet weights(125, 150, 220) Corbon offers and I tried them all in it, plus my handloads. It seems to like anything I put in it. Some do a little better than others, but they all shoot well from it. It will just pack the 220's on top of one another. Does anyone know what powder is in the Corbon 220's? I saved one to take apart, just haven't done it yet.

Just left a post in the Ammo and Reloading section.
Link to Reloading post

Have been reading Quarterbore's info for a while and his site helped me make decisions on my first Thompson/Center caliber.
Shooting a T/C Contender with a 16.5" Custom Shop barrel (1 in 10" twist). Playing with some 200 grain Leadhead boreriders and H4227 around subsonic. Trying to find a supersonic hunting load for whitetail deer using H110.

.300 Fireball Project. . .
 

Hello All,

Here are the details of my latest project.

.300 Fireball Barrel from John Noveske, PacNor SuperMatch SS blank,
16.5" 1:8 twist, Cooley Brake, J.P. Gas Block and Match Trigger,
Stag Arms Lower registered as Pistol, Rock River Arms Carrier Assembly,
Fulton Armory New pattern USGI Upper, Olympic FIRSH Handguard,
ACE M4 SOCOM Buttstock, Aimpoint CompM2-2X 2MOA Dot,
Wilderness Single Point Sling, Swiss Vertical Grip, Falcon Sure-Grip Ergo-Grip.
Both Colt and Bushmaster Mags with Magpull Tan Anti-Tip Followers.

View Image using this Link. Only 27K.

http://www.quarterbore.net/forums/at...entid=43&stc=1

Any Questions? Bye Dave

300 Whisper / 300 fireball / 300 Murmur
 

Hey there,
I just purchased a dinky stainless / synthetic T/C contender carbine carbine with a Virgin Valley 1-8' 300/221 & lightweight suppressor. The previous owner was using 240gr MK sierra's with good results so I'm having a Leupold 2.5-8x36 VX3 scope fitted with a custom dot reticle to give me hold points out to 300yards. I haven't shot the little carbine yet but the previous owner was getting 1" 5 shot groups at 200 yards. Should be just the ticket for the spooky feral goats out my way. I'm not worried about the 240gr MK terminal performance.....head & neck shots will make for a very dead goat even without expansion or tumbling. I'll keep you posted once I've received the rifle & scope back from my Smith.

Whisper Loads. . .
 

Hello All,
Since my last post have made two range trips to test various Loads, all using the 220 Sierra.

Ended up with Two SubSonic Loads. One using H110 and the other using H335.
So far the H335 load seems the most promising.

When setting the JP Gas Block, ended up with 6 turns out for the H335 load.
This cycles reliably with a velocity of just about 1040 fps.
(Yes, I tapped the Block myself. Some Very Nervous Moments. SS Block.)

The H110 load is softer, quieter and will not reliably cycle the action with the current Gas Block setting.

Any news about Whisper Brass from StarLIne?

TTFN, Dave

I just recieved a SSK 300 whisper M4 upper and suppressor last month. I decided to pay the extra money and get theirs for multiple reasons. One, they started it all and I'd like to support that. Two, I've met JD and he was very nice and helpfull. (It's taken me over 10 years to finally decide to actuallty do it.) Third, with these kind of projects there are always problems and I wanted someone I could trust to send it back to.

I ordered 500 rds of corbon 220 subsonic with the upper and suppressor. I've only fired 40 rds but they functioned perfect. I'm waiting to recieve a rail system that I will modify to fit, and then I need to scope it. I'll start with an ACOG but plan on a hourus vision scope.

freshly built and unfired:
http://i15.photobucket.com/albums/a3...er/whisper.jpg
Here is a quick writeup on it as well:
http://www.geocities.com/underwatersniper/whisper.html

300 whisper all the way
 

i fired a socom 300 whisper overseas and loved it so much i made one for myself i shoot a 147 fmj with 8g of 2400 i can make head shoots at 200 yards scoot a whisper you will never own a 9mm ar

Not quite...
 

Waiting on the arrival of PacNor blanks to start our own batch of 3 (so far) UK spec rifles. Reamers, dies and gauges have already arrived. They'll be standard (ish) ARs - but no gas in the UK. Side charging 'bolt' action all the way here... On the plus side, short barrels and suppressors are no problem...

Nick

Ameetec upper, Pac-Nor 12" barrel:
http://www.ukshooting.com/images/whisper2.jpg

I am working on mine at the moment. I just decided to go for a Border barrel.
I will be a bolt action rifle.
I will post pictures when finished.

ND

I have an AR15
 

My first post.
I have an AR15 the upper was made by Randall at AR15barrels.com.
I assembled the lower from a rock river reciever. Using a Bushmaster 2stage match trigger.
The supressor is made by "Jet"
16" Barrel with adjustable gas bloc. shoots sub 1" MOA without a problem

CZ 527 conversion
 

My CZ 527 conversion is underway... When everything is done I'll be sure to post photos and disclose the gunsmith... I pretty excited to have the man that I got to do the work to say the least! The best part is he is really looking forward to doing the work for me. There is nothing better than knowing the guy who is doing the work is taking a genuine interest in the work.
Going with 16" barrel 1/8 twist and trying to make it look pretty also.
I trust all will be good.

Just finished and test fired my Olympic barrel assembly on a RRA lower. Is it unusual to find Olys with the gas block in the pistol location? Mine is there and unmodified it cycles fine with subsonic and supersonic loads.

Sub loads are: 220g Sierra, modified 221 brass, 8.6g H110 powder, Rem 7 1/2 primers.

Super loads are: 110g ? HPs, modified 221 brass, 19.0g H110 powder, Rem 7 1/2 primers.

I was more than willing to fiddle with my new toy if it didn't work, but it has been working fine with both loads.

J

G'day from Australia,
I am currently load testing a 300 Whisper for a friend. It's a MAB (Australia) single shot bolt action. 30" Heavy S/S MAB barrel, 1/8 Twist. Big gun! Only just started loads last week. Way too sub sonic! Dont need a supressor when your making less noise than a .22. Getting consistant results is a whole different issue.
Also been testing a Jongmans single shot bolt action with a 15" S/S, 1/8 twist barrel. Have a 155grn Hornady A-Max load at super sonic getting 1/4 to 1/2" groups. 220grn Sierra HPBT Match getting 1/2" but just over sub sonic. Have tried 240grn pills but can't get stabilization at 100 yards. Boy do those have some torque!
Would be great to hear from some of you guys that hunt with this caliber and if anyone has any advise on this cal with long barrels.

Cheers,
caithness77

New Toy
 

OK so I just recently got my Mod1Sales barrel to start a 300Whisper AR project. I've gt a DPMS highrise upper and handguard. Mounting a Leupold 3.5-10 VariX-III on it. Picked up the rest of the small parts from Brownells and am going to put this upper on my tack driving .223 lower. Being an engineer married to a scientist, this is an experiment not just purchase another gun to shoot. Look for more posts in the Ammo section in the future as I play with load development.

socom 300 whisper
 

while in the army got to use a 300 whisper while over seas . no other round or rifle combo could beat it. head shoots at 200 meters with ease thank you mr jones !!!!!!!!!!!!!!!!!!

ready set GO GO GO
 

Howdy Pard's
I guess it's time for me to say hello
I'm Huckleberry, I live on the far side........ of the pond :smile: in Norway.
My whisper story started atleast 2 years ago when I got hold of a one 300 whisper brass, it has been sitting on my desk and said nothing untill this winter. After reading all I could find about this little but, Oh so cool, cartridge I got hooked. I started out with a Redding Die set and some new 223 brass, cut and formed them, then put some dummys together. Then a barrel, a reamer + a good friend with a lathe, the last item I bought was a Rem 700.Guess I have most of the parts that I need for this prodject, oh yeah I gonna make a full length silencer as well, I hope it's done in a couple of weeks, will let you know then, if my tinkering is working or not.
Thanks to you all that has given "me" their story and pictures in this forum
it helps a lot when you are shopping for ideas.

Thanks for your time
Huck

ar-15 pistol: 11.5" barrel built by randall 1/8 twist hbar stainless pistol length gas w/ jp turned down adjustible manifold

no can
used for deer hunting