Weighing the same does not mean that mixed case volume is the same.
Web design, wall thickness, metal chemistry can and does vary by mfr.
Good chance they will be close in weight---- if the outside dimensions
have been uniformed. ie: sized, trimmed, beveled, primer pocket cut, etc.....
May not be a big issue with some guns and what their shooters are looking for though.
Big difference for some others.
You have to do the process and shoot the gun to know the final effect of different headstamps.
