Asking if anybody has necked DOWN .416 Ruger to .375 Ruger brass.
Would it work using .375 Ruger dies to do so in one pass or would an intermediary step be advisable ?
Is it likely with sizing down the overall brass measurement will exceed maximum case length and need trimming ?
Would the neck brass become too thick and require turning ?
Any potential or actual pitfalls one should be aware of ?
Obviously it would be far easier to just buy .375 Ruger brass but currently here it seems unobtainable. I can obtain a few pieces of .416 Ruger cal and hence my question.
Thanks in advance for any replies.
Cheers.

Necking 416 down to 375 is no problem with one pass.

Also, I have never found that neck thickness was a problem.

Plenty of lube.

Remove the expander from the 375 die as you size down.

Go slow.

I neck down 416 Dakota and 404 brass to 375 in one pass.

No problems at all, and never lost a case.

Great info, thankyou Saeed.

One question regarding the 375 expander you suggest temporarily removing. Once the 375 die has sized a neck down is it not then necessary to expand necks internally to the correct dimension for seating, achieved by drawing the expander plug back through the neck ? Or are you suggesting internal neck expansion is best done later by a separate cycle through the die ?

Yes.

Once you have necked it down.

You have to run them in again with the expander in.

You really don't have to do it this, but we do.

quote:

Plenty of lube.

But not too much. Excessive lube will cause dents in the shoulder. Make sure your sizing die is clean and very lightly lubricated, then use just enough lubrication on the case to assure smooth resizing.

If you do get minor shoulder dents don't fret over them. They will shoot out on the first firing.

Removing the expander button is a good practice: If you mess up and stick a case in the die it is much easier to get it out if you don't have the expander button in the way.

I am not how many of you actually form as many different cases from others as much as we do.

Funny part one does not to fire form brass before actually using them.

I firm 375/404 from 404 Jeffery brass.

When I run the cases in the die, they get a second shoulder.

They don’t look at all like the once fired brass.

I load them and take them hunting.

Work just as well as those which have been fired before.

I get funny looks at the hunting camp.

But that is normal for me!