300 Whisper Owners... Please sound off!

[H2H]

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.

[Buckshot]

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.

[blastr1]

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.

[KillaB]

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.

[dlt223]

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

[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.

[dlt223]

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

[GMHA375]

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.

[Whisper in your ear]

freshly built and unfired:

Here is a quick writeup on it as well:
http://www.geocities.com/underwatersniper/whisper.html

[ranger dave]

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