For 40+ years I have used 30-30 brass to make brass for the .219 Zipper, 25-35, 32-40, 32 Spl. And the 38-55. There's a few quirks with the .219 and the 25-35 but easily overcome.
As for making 38-55 I first next expand using a 35 caliber expander. The long tapered expander for making 35 Whelens from 30-06 works great. Then I tun them through a .378 Whby. expander (which is also long tapered) but a standard 38-55 expander will work just about as good.
The brass comes up a bit short but just seat your bullets out to normal overall length. You will have to make changes to your crimping die in order to crimp but if you have a decently tight bullet fit, forget the crimp. I ground off a bit from my RCBS seating/crimping die and my Lee FCD and you can still use the RCBS die for crimping normal length brass.
After the first firing, I sometimes trim to get a perfect case mouth but I usually skip this step as an open sighted 38-55 no where near compares to a 6.5X.284 that shoots out to a thousand and beyond...accurately.
Also, don't believe the Internet BS about "burning the front of your chamber" using short brass. Instead of going into great detailing why this won't happen, I'll just tell you that I think nothing of the extended shooting of short 38-55 brass out of 5K rifles.
Eric ( Yooper2) does make sense by just buying normal brass but he has a SUPER job and makes millions of dollars. In fact, I think he is part owner of Starline.
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Howdy Eric!-------6