lower charge on military .223

[redw7blue]

Should I lower my powder weight on the military brass vs the commercial brass when loading for .223?
I am using 24.5g of H335 with a 55g bullet.

If I lowered 10% that would put me at 22.1g. That seems a bit low for the 55g bullet.

 

[rcmodel]

You are fine.

24.5 is just a scooch over the Hodgdon suggested 23.0 starting load.

25.3 is max with any brass.

Heavy GI brass is a fact in 30-06 & 7.62 NATO.
Not so much in 5.56.

Some commercial .223 brass is heavier then some GI 5.56 brass.

rcmodel

 

[rg1]

Here's an article that shows .223 Rem case weights and compares the weight of some military and commercial cases. Like rcmodel said, you should be fine with 24.5 grains of H335 and 55fmj bullets in any cases I've loaded.
http://www.6mmbr.com/223Rem.html
I have found some .223 brass cases that were heavier than RP, WIN, LC, WCC and I segregate them and do drop the charge 2-4 tenths of a grain and use them for plinking. I probably wouldn't have too but I do. Now if you go above 25 grains and near maximum you might want to drop charges a little if you run into a brand that is quite a bit heavier than normal.

 

[Doug b]

Red 24.5 grs. of H335 & Noslers 55 gr.ballistic tip bullet, with a small mag. rifle primer is one sweet load.