Has anyone developed a load for a 375 RUM and 300 grain North Fork bullets. I specifically would like to know a load using H4350. It is my understanding that you can load a little hotter due to the rings cut out of the base that reduce pressure. Is this true? Any help would be appreciated.

quote:

It is my understanding that you can load a little hotter due to the rings cut out of the base that reduce pressure. Is this true?

maybe when you get it loaded to the manual the recoil will tell you to stop.....It's a helluva lotta power and I'd be looking to load it down and not up.....Personally I'd ask the bullet MFR for verification of this but when you get that 300 grainer to 2800'/sec maybe the zest for additional speed will have wained a trifle!!!

I want to load to around 2750 -2800. This is the absolute max according to most references i've found. I usually don't max a round out and like a little cushion. This is the reason for my question.
BTW, speaking of loading it down, I would also like to know if anyone had duplicated the 375 H&H.

Clint:
Firstly, I don't load for a .375 RUM, my closest chambering being a .338 Mag. However, I do use Northfork bullets. To work the load up for the Northforks, I followed the instructions Northfork sent with the bullets. Basically, you work up a load with an equivalent bullet weight of another manufacturer and note the powder charge and velocity. You then load the same powder but begin about 8% below your accurate charge and work up until your accurate velocity is attained. With my .338, I started with a 225 Gr. Hornaday and, as I recall, got my best accuracy with around 75.5 gr.s of Rldr.-22. (think that was the original charge). Anyway, I attained the same velocity with about 71 grs. of the same powder using the Northfork.
I've found them to be more accurate than Partitions and so have gone to Northforks exclusively. Hope this helps some & good luck. Any questions & you can call Mike @ Norhtfork - he's very helpful.
Bear in Fairbanks