Thread: 30-223 build

Hi

You can never have enough unfinished projects on the go at any given time

So this is my latest endeavour; a 30-223 (or 30TCU or 30Apache or whatever you want to call it?), if you've heard of a 300Whisper (or one of the many clones) you'll know what the hell I'm talking about? If not, then it's a pretty cool little round which is made by necking up a .223 case to accept a .308 bullet.


Pic of the 30-223 next to its parent case the .223rem

The 30-223 punches above its weight in supersonic (a little faster than a 7.62x39) and best of all it can be loaded to shoot subsonic with heavy pills that ''go all day'' retaining much of its energy right out to realistic shooting ranges i.e. at 200m it will have way(!) more energy than its parent calibre the .223 would have.

So build to date:



Take one very shot out .223 Weatherby rifle


Strip it down and put it in a box with a heap of goodies to bolt together to make a rifle

And that’s about as far as I've got hahaha...but don't worry there will be more to come....

kj

Looks like a fun project & probably quite an effective close range rifle as well. I had a marrage with a 300 whisper on a TC carbine years ago & found it very effective with 125gr TNT's or NBT's for supersonic & 240gr Matchkings for subsonic. Subsonics accounted for many, many animals but but expect to double tap as anything other than a headshot will have them run a long, long way unless bones are broken. Keep us posted

Thanks for the tips, I'd be keen to hear more on the subsonic side of things and any experimenting you (or others) have done?

I've been down the Whisper road before about 6 years ago and found similar findings, i.e no real bullet expansion on the 240SMK's so animals reacted as if being hit by an arrow and ran away to bleed to death. This was no big deal, I'd just sit down after the shot and give them time (5 minutes) to go into shock and die. Usually I'd find them only 20-50m away DOA after that time, but if you immediately chased them they could go hundreds of meters.

However I was kind of hoping that with the popularity of subsonic cals the projectiles may have advanced or people had tried different things to get better results?

If anyone reading this has got any tips or tricks I'd be keen to hear them?

kj

How about mag length?
L/R 75 Amax 80 Targex .223 50, whisper case,110 VMax,125 Targex,180,240,240prog,240 whisper. CZ mag 223/ whisper

Hi Madjon, thanks for you input.

In my case the Weatherby action I'm using is a medium action so I could seat the bullets out as far as I wish too, as this action will take a full house .308win case with room to spare. In the AR15 format OAL is a concern, hence why the 300Whisper has gained more of a following than the 30-223.

It’s a little hard for me to tell, but are those bullets in your photo 7.62x39 or are they 30-223? If they are 30-223 could you share some load data with me please, as finding it on the net is proving elusive?

Many thanks

kj

30.223,I only necked them up(using my 300 whisper dies) to see how the length was.
whats the twist on that axle?
Howa action,should have gone to specsavers

Originally Posted by madjon_

30.223,I only necked them up(using my 300 whisper dies) to see how the length was.
whats the twist on that axle?
Howa action,should have gone to specsavers

1:8 trueflite barrel.

Yeah the weatherby/howa is a bit "clunky" and heavy but it's solid and a proven performer in longrange builds. Not that this will be used for longrange though haha

Kj

Kimjon,
This recently sparked my interest again in subsonics in 300 whisper

Lutz Mller .300" Whisper Unterschallpatrone

I can't speak german but they look very, very interesting. Shouldn't be too hard to get your hands on some of these.

Originally Posted by LJP

Kimjon,
This recently sparked my interest again in subsonics in 300 whisper

Lutz Mller .300" Whisper Unterschallpatrone

I can't speak german but they look very, very interesting. Shouldn't be too hard to get your hands on some of these.

Somehow after ''reading'' that website I've now convinced myself that I can speak German (I can't) because I kind of understood what was going on. Yes very, very coooool!!! I picked up some of the best info I've ever seen in that article, many thanks for providing the link.


kj

Should do a .300AAC

Originally Posted by gimp

Should do a .300AAC

I have 15k brass coming over to convert to 300AAC/ Whisper (and a few more barrels)
Its just a Whisper thats been sent to SAAMI
168gr @ 2k isnt bad, 125s good GOOD
Soon as this bloody punch arrives I can knock some expangin 200-240gr out....18 months and counting...

Originally Posted by kimjon

Somehow after ''reading'' that website I've now convinced myself that I can speak German (I can't) because I kind of understood what was going on. Yes very, very coooool!!! I picked up some of the best info I've ever seen in that article, many thanks for providing the link.


kj

Try the Google translate tool gets more interesting

I took the day off work today to play with this build and managed to get heaps of stuff done, including a little shopping.

Progress to date:


Burris scope, Weaver bases, B-Square extra-low rings, Mini over barrel suppressor and a packet of 240gr SMK's projectiles.


Trueflite 1:8 Barrel fitted and head spaced to action/bolt, end of barrel threaded 1/2''x28tpi


The mag well has room to spare with the spacer block removed, however the feed rails didn't go back past the spacer block so they needed to be milled longer to allow the back of the brass case to sit up enough for the bolt to be able to collect it on the forward stroke.


Finally I just did a dry fit to see if it will all work, some minor issues to solve...but all in hand.

Next will be to fit a new stock as the factory Weatherby stock is ugly as sin! Whoever designed it should be beaten with a pillow case full of door knobs!

kj

What's the info on that can?

Originally Posted by gimp

What's the info on that can?

It's a bit of an unknown?

All steel construction and made for a colt heavy barrel AR15 with a 1/2"x28 thread. It's only about 10" long and comes back about 4" over the barrel. It weighs 450g.

I banged a clip of .223 through it (before boring it out) and it worked as good as any other suppressor I've ever used.

I had it line bored to suit the .30cal for this project... Hope it works?

Kj