300/221 Page

[Lawfficer]

I've compilled everything I have found about the 300 Whisper into one page.

Let me know if you see any errors or have something to add


http://lawfficer.doesntexist.com/300whisper/

[cherokee]

Excellent site. I have one suggestion. In this paragraph:
But why not just buy a .308 rifle you ask? Because this round loves it when you put a Suppressor/Silencer on it! Further, it has the ability to properly stabilize heavier rounds (190gr,200gr,220gr,240gr) to insure accuracy, but at the same time, keeps the round under the speed of sound.
You state that the round has the ability to stabilize heavier projectiles. The round has nothing to do with stabilizing the projectiles. That is controlled by the rate of twist of the barrel. The longer (heavier) the bullet the faster it needs to spin. Also, a bullet traveling at 1000 fps needs a faster twist than the same bullet traveling at 2600fps. 1/8 or faster twist is needed to stabilize 200gr and heavier bullets at subsonic speeds in the 300whisper.

[Lawfficer]

116 views and only 1 reply?? It can't be that good or that complete. Im still looking for opinons/views/corrections etc.

And thanks for the help Cherokee

[sparhawk]

Lawfficer, thanks for an awesome page on the 300/ 221. That is a lot of good info. I've been searching for 300 Whisper info on the web for about 5 months now, and your site has a lot of references I have not seen. I'm still trying to learn as much as I can while I'm STILL waiting for all of my parts to arrive. I actually have received a few of them now, but this process is still taking a long time. After reading the info on reloading, I have a question for you that I have never heard anyone discuss. Which of those bullets on your list has the best sub-sonic expansion? I'm looking to make practice rounds that won't need to expand, but I also want a round that will give me the most expansion in a hunting/ sniper bullet? What would you suggest?

[Lawfficer]

To be very honestly I have no clue but they all kill paper very well. Ill have to set up some wet card board next time I go to the range.

The problem Im having now is every one and thier brother, and their brother's brother, and their brother's brothers' cousin are sighting in their deer rifle and getting time to play on the range is almost impossible.

[cherokee]

sparhawk
What exactly is a “Sniper bullet”?
The answer to your question is none. All those bullets were designed to expand at velocities well over 1000fps.

[sparhawk]

O.K. - I knew the moment that I hit enter that I should not have used the "S" word, but I was too tired to edit it. Alright! - I mean "Tactical" as in law enforcement or military use (or maybe even home defense, who knows?)

Engel has a 180 Grain .308 subsonic round that they say expands reliably at 1,000 fps. No one seems to know how it is built. I was wondering if there were any others like it on the market?

[cherokee]

The Army uses M118LR 7.62 (308) in the M24 SWS. The bullet is the Sierra 175gr HPBT Matchking traveling at approx 2600fps.
For home defense there are better choices than the 300 whisper.
If I were going to use the subsonic 300 whisper for hunting I would shoot the heaviest bullet that would stabilize in my rifle. With a 1/8 twist barrel you could shoot 220 or 240 grain bullets. Hornady makes a 30 CAL 220 GR Round Nose that will do OK within reasonable range. If zerod at 100 yds you will be 4" high at 50yds, 14" low at 150yds, and 38" low at 200yds. Knowing the exact distance of your game and the amount of elevation to dial into your scope will be crucial. At 200yds your bullet will only have 386 Ft-Lbs of energy. I would keep shots under 100yds.

[Lawfficer]

Something tells me Cherokee knows alot more than the "Junior Member" titles gives him/her credit for.

Good info!

[kurtz]

I've been looking at the Hawk line of bullets for a 300 whisper bolt gun that I've been working on.....everything I hear about their bullets is that the expand well at modest velocities and have good weight retention......http://www.hawkbullets.com/maintest.htm

[Lawfficer]

Bump to the top to elicit responses.

[hugginsvilleH&A]

nice site LE me I'm shooting the M1S over a R/R lower ,also still working up loads (subsonic is all I'm interested in right now) 220smk over 1680/4227 so far I'm happy with it will do some chrono work this week , did the fire lap method recommended by pitt the thing shoots nice , I like it,

[HotLead]

Lawfficer,

You mention in the 300-221 Weapons section that Thompson Center makes 300-221 barrels, and I just wanted to make a correction.

T/C does indeed chamber it's custom shop barrels in the genuine .300 Whisper chamber, under license from J.D. Jones/ SSK. (Not the 300/221).

I purchased brass and RCBS (.300 Whisper) dies directly from SSK when I first got my T/C barrel. The brass was Lake City 5.56mm formed into the Whisper cartridge, so that is all I use for brass; it works well enough that I have never had to form brass from the .221 Fireball.

eta: nice collection of information!

-JD

[redtazdog]

Lawfficer,

You mention in the 300-221 Weapons section that Thompson Center makes 300-221 barrels, and I just wanted to make a correction.

T/C does indeed chamber it's custom shop barrels in the genuine .300 Whisper chamber, under license from J.D. Jones/ SSK. (Not the 300/221).

I purchased brass and RCBS (.300 Whisper) dies directly from SSK when I first got my T/C barrel. The brass was Lake City 5.56mm formed into the Whisper cartridge, so that is all I use for brass; it works well enough that I have never had to form brass from the .221 Fireball.

eta: nice collection of information!

-JD
Yes TC's custom shop does make 300 whisper barrels but they are only 1:10 twist not 1:8 like most like for shooting heavy long bullets.
I found this out when I called TC to have a barrel made with 1:8 and ended
up having SSK make it for me.
Damn barrel cost me more $ having SSK make it, but it does shoot nice :)

[amafrank]

I guess one comment I'd like to add is that the round was actually developed from the .223 back in the 60's as a wildcat deer and small game round. It seems that whenever a new cartridge comes out someone has to fiddle with it and the .223 had a lot of mods done up and down in size. I think the only real claim jones has is putting the heavy subsonic bullet in the round though he seems to get credit for inventing the whole idea of subsonics which is not the case at all. Not trying to take anything away from his contribution but don't forget all the previous steps he built on top of.

It is good to see some dedicated pages with a bit more than just the small blurb normally given to the round.

Frank

[egraham]

Thanks so much for getting the website going. One thing I would add is if you have a Stoney Point/Hornady AOL gauge then you can send in a few fired cases and they can modify a case to fit the OAL gauge. I think the cost is around $10 and it takes a couple of weeks.

I think Hornady bought Stoney Point.

[HotLead]

Yes TC's custom shop does make 300 whisper barrels but they are only 1:10 twist not 1:8 like most like for shooting heavy long bullets.
I found this out when I called TC to have a barrel made with 1:8 and ended
up having SSK make it for me.
Damn barrel cost me more $ having SSK make it, but it does shoot nice :)

Roger that...I was only referring to the chambering. Not only are they 1:10 twist it is LH instead of RH twist.

I have the T/C bbl, but in retrospect, I should have spent the extra $$ for the SSK for the flexibility in bullet weight.

-JD

[HUNTER2]

As for HAWK BULLETS: They make some pretty darn good bullets for medium velocity ( 30 and 7mm ), but they are working on some heavy bullets that will expand at the Whisper speed. Hopefully have it out by summer.....Along with a couple of other companies> Keep fingers crossed!!!!!