forming 375 Win. cases

[Reverend Al]

REVERAND AL, when you make 32/40 out of 30/30 do you have to trim them be for or after fire forming?

.30-30 cases come up short on length for actual .32-40 cases, so any trimming that you do is just to square up the mouths of the cases after fire-forming. If you want to make full length cases from .30-30 brass then you need to buy a Kal Max case stretcher and lengthen them to full length .32-40 or .38-55 ...

http://kal.castpics.net/CaseStretcher.html

[Skipper]

Or, buy some 3 1/4" 30-30 basic from Buffalo Arms
https://www.buffaloarms.com/30-30-ba...-20-ber3030314

By the way, Bertram makes 375 Winchester brass
https://bertrambrass.com/product/375...ass-100-count/

[toot]

REVEREND AL & SKIPPER, thanks guys for the great help. i have never heard of a case stretcher and i am over 74 yrs. and have been playing with ammo for over 65 yrs. this is a great site and bunch of guys.

[garandsrus]

Here’s a good article on case stretching: http://www.texas-mac.com/Stretching_...R_Chamber.html

[indian joe]

Anybody forming 375 Winchester cases from 30/30 brass, What is the process,

took a look through my loading dies , found a rcbs 44/40 size die with a 3/8 nf thread in the head , took a 3 inch long x 3/8 nf high tensile bolt, cut the head off , spin it in the lathe and put a nice taper on it , polish it with 1000grit paper , theres your expander die !! (would probably be better to do it in two passes using two dies)
Twas a year or two ago - I processed PMC 30/30 brass to 375BB in one pass dont recall loosing many .