.223 should you size to .224 or .225?

[mookiie]

I am wondering what is the best size.224 or .225? Or do you need to bore slug your barrel to really know?

[chsparkman]

I would say try both, or slug the bore. I found after trials that .225 works best for my Ruger No. 3.

[Larry Gibson]

My moulds all drop at .226 - .228 so I use a .228 sizer to crimp/seat the GC and lube only.

Larry Gibson

[mookiie]

I have two molds/bullet styles:
Lyman 225415AV @ .224 and 50 grns.

Lyman 225646DV @ .226 and 60 grns

[mookiie]

I used a 1:1 lead:Linotype mix what do others find works well?

[Shiloh]

I am wondering what is the best size.224 or .225? Or do you need to bore slug your barrel to really know?

It'd be a good thing to know.;-)

Shiloh

[mookiie]

Yes I know I slugged all my other rifles but am a little hesitant to do the 223 because of it being so small. I do have a brass rod that fits, I just need to cut it into 6 inch sections to do it.

[runfiverun]

I have been using 225 in some of my rifles with an alloy of 4% tin and 6% antimony.
I have a 227 sizer on order to better fit some of my rifles throats.

[leadman]

I size to .225" for my Contender factory 223 Rem and a rechambered Contender 22lr to 22 K-Hornet. Works great in both. The 22lr is supposed to be .222" to .223" but never slugged it.

[Moonie]

I size to .225 for my sons AR upper.

[JeffinNZ]

If it will chamber, shoot it. I so mine as cast and they are generally .2255-.226.