How hot do you load 223?
- Thread starter Kryogen
- Start date
Sure - As a rule of thumb, the hotter the calibre, the flatter the primer. Which takes the discussion back to the point - its very difficult for a reloader to determine when they have reached max load pressures for a given rifle. Testing labs do have access to equipment that allows them to determine chamber pressure, I suppose an amateur reloader could go this route, if desired.
Otherwise, your chrony gives you the best evidence. Even then, shooting the same load in two different rifles can yield substantially different velocities due to barrel friction etc. Are the rifles running at the same pressure level?
Otherwise, your chrony gives you the best evidence. Even then, shooting the same load in two different rifles can yield substantially different velocities due to barrel friction etc. Are the rifles running at the same pressure level?
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It depends what you consider to be flat primers. I have seen pressure signs with some factory Weatherby loads, as well as with some factory 300wsm loads, but generally, I haven't seen many pressure signs with factory loads.
Kryogen
Some good info at the links below for pressures and velocities, make sure you look at the "Duplicating NATO cartridges (cloning)" section.
223 / 5.56 reloading
http://www.223reloads.com/home/223-5-56-info/223-5-56-reloading
5.56 vs .223 – What You Know May Be Wrong of
http://www.luckygunner.com/labs/5-56-vs-223/
My practice load with Hornady 55 grain FMJ and 25 grains of H335 from a 16 inch carbine is 40 fps slower than the American Eagle M193 chart at the link above at 50,000 psi.
Some good info at the links below for pressures and velocities, make sure you look at the "Duplicating NATO cartridges (cloning)" section.
223 / 5.56 reloading
http://www.223reloads.com/home/223-5-56-info/223-5-56-reloading
5.56 vs .223 – What You Know May Be Wrong of
http://www.luckygunner.com/labs/5-56-vs-223/
My practice load with Hornady 55 grain FMJ and 25 grains of H335 from a 16 inch carbine is 40 fps slower than the American Eagle M193 chart at the link above at 50,000 psi.
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