Read the link below from Accurate Shooter and the section ".223 Remington Components–Brass, Powder, Primers"
http://www.accurateshooter.com/cartridge-guides/223rem/
The majority of competitive shooters agree that case weight has nothing to do with internal volume of the case, this is because it depends where the "weight" of the case is located. This can be seen on the ".223 Rem Case Weight vs. Capacity" chart above.
The Federal case in the photo below center has a thinner web area than the military Lake City cases on either side of it. "BUT" the Lake City cases have "MORE" internal volume.
All the comments made here are generalizations about group sizes, you could have two identical rifles with the only difference being a heavy stock trigger and the other being a lighter custom trigger with a much better pull. The stock trigger may not show any difference in group size and the custom lighter trigger will.
Bottom line, the group sizes will depend on the rifle, meaning with a custom made rifle and prepping the brass by internal volume being able to shoot the smallest groups.
Quickload software requires the internal volume of the case in H2O to determine chamber pressure using cases fired in your chamber and not being resized.
Much of what bench rest shooters do to their brass filters down to us, "BUT" I'm not going to weight sort and neck turn my .303 British cases I fire in my Enfield rifles. (or even worry about mixed brass)
http://www.accurateshooter.com/cartridge-guides/223rem/
The majority of competitive shooters agree that case weight has nothing to do with internal volume of the case, this is because it depends where the "weight" of the case is located. This can be seen on the ".223 Rem Case Weight vs. Capacity" chart above.
The Federal case in the photo below center has a thinner web area than the military Lake City cases on either side of it. "BUT" the Lake City cases have "MORE" internal volume.
All the comments made here are generalizations about group sizes, you could have two identical rifles with the only difference being a heavy stock trigger and the other being a lighter custom trigger with a much better pull. The stock trigger may not show any difference in group size and the custom lighter trigger will.
Bottom line, the group sizes will depend on the rifle, meaning with a custom made rifle and prepping the brass by internal volume being able to shoot the smallest groups.
Quickload software requires the internal volume of the case in H2O to determine chamber pressure using cases fired in your chamber and not being resized.
Much of what bench rest shooters do to their brass filters down to us, "BUT" I'm not going to weight sort and neck turn my .303 British cases I fire in my Enfield rifles. (or even worry about mixed brass)
