IMR or H 4350 7mm mag
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SPEERE # 8.
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hoz53
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one of my old sierra books from 1978 says max load is 61 grains IMR-4350 for a 160 grain spitzer in 7RM
IMR
Hodgdon
Accurate
All of those 4350 are about the same anyways.
Hodgdon shows IMR 4350 needs more powder than H-4350 to reach max, while Speer manual shows the opposite.
And the Lee Manual makes it even more confusing.
In some instances it's good to have a chronograph and go with that. If reloading manuals don't exceed 2,950 fps with 160 gr bullet in a 24" barrel, then I wouldn't either.
Brass make can make a difference as well when it comes to reaching max safe pressures.
Hodgdon
Accurate
All of those 4350 are about the same anyways.
Hodgdon shows IMR 4350 needs more powder than H-4350 to reach max, while Speer manual shows the opposite.
And the Lee Manual makes it even more confusing.
In some instances it's good to have a chronograph and go with that. If reloading manuals don't exceed 2,950 fps with 160 gr bullet in a 24" barrel, then I wouldn't either.
Brass make can make a difference as well when it comes to reaching max safe pressures.
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