Specifications on the 375 - H&H , Wby , and IMP 40

[Teddy (punchie)]

Couple of questions on these.

How many 375 mag designs are there? 375 Holland and Holland as parent.

H&H, Wby, Ack. Any more ?

We have a 375 we need a neck sizing die for. It should be a 40 Deg. Imp.

But before we assume thought I would ask around.


Thanks !! Teddy

[Chill Wills]

I might not be understanding the question correctly but if you are looking for a neck (only) sizing die, I don't think the shoulder would have anything to do with it for your application?
I use neck sizers and have made a few too. By design all the neck dies I use stop short of the shoulder area.

I guess that is why it is not a neck and shoulder sizer.

Does this make sense?

If you use the Lee collet neck sizer, in fact I have one for my 375 H&H, it will just squeeze the neck area around a mandrel. The case shoulder angle does not effect the die use.

[Texas by God]

The .375 JRS also. Jon R Sundra's version of the .375 Ackley Improved. A .375 Ruger or .375 RUM FL die might do what you want but you can probably just partial size the case in a normal die- the H&H headspaces on the belt. Try that first. Smoke a case with a gopher match and adjust your die to size 3/4 of the neck- voila! Neck sized .375 H&H. Best, Thomas.

[Teddy (punchie)]

Thanks for the replies, I'm checking the other .375's in the full length line of a 375 H&H blown out, with a sharp shoulder.

Going to look into the 375 collet lee neck resizing.

[Cold Trigger Finger]

There were/are a Bunch of Wildcats off the 375 H&H . Barnes, Mashburn, ICL, ect. Plus the ones already mentioned.