5.56 Nato convertion in 223 Rem

[Shaikh]

Hello
I m new in reloading... i have 5.56 miltry rounds i want to convert them in 223Rem with nosler 55grain varmint BT..
Thanx

 

[J E Custom]

Are you going to shoot 556 ammo in a 223 rem or you just going to load the 556 cases to shoot in a 223 Rem ? If the latter, just trim the cases to 223 lengths and size in 223 dies.

If you plan on shooting 556 in 223 your rifle may not have enough chamber.

https://www.google.com/search?q=dif....69i57j0l7.29255j0j7&sourceid=chrome&ie=UTF-8

J E CUSTOM

 

[Shaikh]

Are you going to shoot 556 ammo in a 223 rem or you just going to load the 556 cases to shoot in a 223 Rem ? If the latter, just trim the cases to 223 lengths and size in 223 dies.

If you plan on shooting 556 in 223 your rifle may not have enough chamber.

https://www.google.com/search?q=dif....69i57j0l7.29255j0j7&sourceid=chrome&ie=UTF-8

J E CUSTOM

Yes want to load 5.56 Cases with nosler 55grain BT
How mutch i trim the case?
Thanx

 

[Shaikh]

Are you going to shoot 556 ammo in a 223 rem or you just going to load the 556 cases to shoot in a 223 Rem ? If the latter, just trim the cases to 223 lengths and size in 223 dies.

If you plan on shooting 556 in 223 your rifle may not have enough chamber.

https://www.google.com/search?q=dif....69i57j0l7.29255j0j7&sourceid=chrome&ie=UTF-8

J E CUSTOM

One thing more i m going to load unfired Brass of 5.56 for 223rem..
Is trimming required?

 

[bigedp51]

I buy once fired Lake City 5.56 brass, resize it with a .223/5.56 die and trim to length.

Your load data and chamber pressure depends on the length of the freebore.

If you look in your reloading manuals the majority of the loading data is for the short throated .223 rifles with a 1in12 or 1in14 twist. My Savage .223 with a 1in9 twist has a longer throat than my AR15 rifles and can be loaded warmer.

 

[Shaikh]

I buy once fired Lake City 5.56 brass, resize it with a .223/5.56 die and trim to length.

Your load data and chamber pressure depends on the length of the freebore.

If you look in your reloading manuals the majority of the loading data is for the short throated .223 rifles with a 1in12 or 1in14 twist. My Savage .223 with a 1in9 twist has a longer throat than my AR15 rifles and can be loaded warmer.

Yes i have 1/12 twist barell..
Now in yours opinion i trim the brass and resize then load and shoot right?

 

[bigedp51]

I trim after full length resizing, the case grows in length during full length sizing.

 

[rsmithsr]

if it is unfired brass, either 556 or 223 you will not need to trim.

Yes i have 1/12 twist barell..
Now in yours opinion i trim the brass and resize then load and shoot right?

 

[Shaikh]

if it is unfired brass, either 556 or 223 you will not need to trim.

No need to trim right...
So what should i do for make 5.56 to precise 223rem ammo
Regards

 

[shortgrass]

Full length size your new brass, then trim for even case necks and uniformity. De-burr the inside and outside, then load starting with the lowest charge in the loading manual. Varget or Benchmark are good powders to start with. Loading manuals show the max case length, .010" less than max is OK. Some loading manuals show a "trim to length", also.

 

[Shaikh]

Full length size your new brass, then trim for even case necks and uniformity. De-burr the inside and outside, then load starting with the lowest charge in the loading manual. Varget or Benchmark are good powders to start with. Loading manuals show the max case length, .010" less than max is OK. Some loading manuals show a "trim to length", also.

Thanx sir for your detaild reply
Regards

 

[Shaikh]

Full length size your new brass, then trim for even case necks and uniformity. De-burr the inside and outside, then load starting with the lowest charge in the loading manual. Varget or Benchmark are good powders to start with. Loading manuals show the max case length, .010" less than max is OK. Some loading manuals show a "trim to length", also.

Actually varget and other powder,s not available in my country that is the main issue...
I have 5.56 Rounds and utlize the powder of 5.56 in 223rem..as per my info Nato using H335 in 5.56 nato

 

[shortgrass]

H335 will work just fine...

 

[Shaikh]

H335 will work just fine...

Thanx sir