I have a friend that has two .300 H&H magnums in his family (his and his son's). Both have their pet load they like and they would like to have an easy way to separate the brass of one gun from the other. His idea is that they shoot normal W-W brass out of one of them and for the other one get nickel plated brass. However, he can't find any nickel plated .300 H&H brass for hand loading, so he is wondering how hard it would be to form .300 H&H brass out of .375 H&H brass.

Looking at the two I can't see any problem with it, but I have never tried it either. I know there has to be someone on here with experience. Is there a problem with doing this? If not, will one pass through the .300 H&H dies do the trick?

Thanks in advance

Winnie

Making 300 H&H from any of the 2.8" belted brass should be no problem at all. Grease em up and run em into a FL die. You might also consider using WBY brass. Better quality and the headstamp should be enough to keep them seperate.

Ray

Unless they shoot large quantities of ammo, it shouldn't be too difficult just to use (and then separate) different brands of brass for each of the guns. Store the loaded rounds for each gun in separate, well marked boxes (different colors are available in plastic) and just sort the empties before or during the reloading process. Seems llike this would be a lot simpler than working the necks down on the 375s, and would also avoid having the wrong headstamp on one batch of ammo.

make a mark on the sides of half the cases with an indelible magic marker. If the case is clean the mark stays for a very long time.

Dear 300winnie,

I also have been trying to turn surplus 375's into 300 H&H's this week. Not much success. Running the 375 through the 300 die (both RCBS) does a fine job on resizing the 375 to accept the .308 bullet but, the 300 H&H shoulder gets "fat" when you do it. The neck/shoulder on the 300 H&H isn't exactly the same as the .375, hence, they won't chanber in my rifle. I thought about trying to trim the shoulder/neck on my newly made 300's but, in my opinion, it's just too much trouble.

I ended up just "bitting the bullet" and buying some factory loaded 300 H&H which I'll use and reload until I can find some brass.

-Vlad

Vladimir: Your dies are obviously larger than your chamber. Try a different brand of "full length" sizing die.