I have a USC with the standard 16" barrel. Thus far I have been reloading with Unique. I have not been able to source any reliable information on the internet regarding ballistics or slower burning powder for the longer barrel.
Example: I have loads with 6 grains of Unique and I change the load to 6 grains of 4064. I have no idea how to calculate the pressure for safe opperation.
Any thoughts or info ? No I haven't chronoed the gun with a standard round.
Thats the one. UMP's come in semi-only as well "FBI model"
Example: I have loads with 6 grains of Unique and I change the load to 6 grains of 4064. I have no idea how to calculate the pressure for safe opperation.
Any thoughts or info ? No I haven't chronoed the gun with a standard round.
I think he is referring to the H&K USC - Universal Self-Loading Carbine. It is the semi-auto version of the UMP (Universal Machine Pistol).
Here is a picture from world.guns.ru:
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Thats the one. UMP's come in semi-only as well "FBI model"
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