223 rem case capacity vs velocity

[702lineman]

I just spun up a new barrel for a 223 Remington 700 action. Used a 223 match reamer with a .092 fb. I ordered 1k starline 223 brass to try out. I have always been a lapua guy but starline reviews and price was too good to pass up.

Question is the starline case capacity is known to be a little less. The new starline brass weighs in the 101-102gr range and the used lapua stuff I have comes in about 93-94 gr.

Is this case capacity going to have an effect on velocity or is velocity based more so off pressure? I'm gonna try xbr first so I know I can get plenty in there unlike varget. I'm going to use this in quite a few matches this year so I'd like to get all I can but I'm not gonna cry about 20fps.

 

[Milo 2.5]

Is this case capacity going to have an effect on velocity or is velocity based more so off pressure?

Yes and yes. Just see what it does. CFE 223 good powder with heavies too, you have options.

 

[steve123]

I have both 223 Starline and Lapua as my mainstay precision brass. I use some old Federal brass which I use for paper stages up close, it's only on 4-5 cycles and the primer pockets are about done on 1/4 of them.

I'm really happy with both brands, Lapua and Starline, but I load medium -ish loads.

I bought 100 of the Starline brass for my 223AI project, fireformed it and am on my 4th firing, but even with 26.3 grains of Varget behind the 88gr ELDM during a ladder test, I didn't get a hint of pressure signs??!! Though my load is in the low node now at 24.6 grains and I expect plenty of cycles at this pressure with no loosening of the primer pockets so far. I'm getting 2813 fps out of a 7 twist 28" barrel with the above load.

I have 4 firings on the Lapua brass too but I bought 500 of them, same thing, no hint of pressure signs with 21.6 grains of H4895 and Berger 70 vld.

For the price I paid for Starline I think I'll buy it instead of Lapua from now on but I should know for sure inside a year when I have 8-10 cycles on it to see how well it holds up.

 

[702lineman]

I have both 223 Starline and Lapua as my mainstay precision brass. I use some old Federal brass which I use for paper stages up close, it's only on 4-5 cycles and the primer pockets are about done on 1/4 of them.

I'm really happy with both brands, Lapua and Starline, but I load medium -ish loads.

I bought 100 of the Starline brass for my 223AI project, fireformed it and am on my 4th firing, but even with 26.3 grains of Varget behind the 88gr ELDM during a ladder test, I didn't get a hint of pressure signs??!! Though my load is in the low node now at 24.6 grains and I expect plenty of cycles at this pressure with no loosening of the primer pockets so far. I'm getting 2813 fps out of a 7 twist 28" barrel with the above load.

I have 4 firings on the Lapua brass too but I bought 500 of them, same thing, no hint of pressure signs with 21.6 grains of H4895 and Berger 70 vld.

For the price I paid for Starline I think I'll buy it instead of Lapua from now on but I should know for sure inside a year when I have 8-10 cycles on it to see how well it holds up.

Yeah I hear ya. I bought 1k starline cheaper than i could get 500 lapis. Good to hear its holding up