224 Valkyrie
Since 1976

Unprimed Brass Cases

38-55 Long Brass (2.125) (Large Rifle primer)

38-55 Win, 38-55 Winchester, 38-55 (2.125), 38-55 Ballard
2.122 - 2.130 O.A.L.

This is a .38-55 case with the original overall length of 2.125" for use in .38-55's that are suited for longer cases (most firearms will accept this length). Wall thickness at the mouth averages .0072" which allows for use of a wider variety of bullet diameters, especially in tight chamber/large bore situations. Headstamp reads *-2.125-*-38-55

For tips on choosing which case length to go with, click here.

Status: Available Now

Box of
38-55 Long Brass (2.125)

*Starline Brass does not sell any loaded ammunition. What you are purchasing are brass cases only and will need to be loaded into ammunition in order to be fired from a firearm.


Overall Rating
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Reviews: 6
Garth H of Green River, Wyoming
5 Stars5 Stars5 Stars5 Stars5 Stars
Really uniform. Older guns, cast bullets and black powder need the longer, thinner cases. Starlings is the only brass that fills the bill.

Carl Z of Sandpoint , Idaho
5 Stars5 Stars5 Stars5 Stars5 Stars
My recently acquired Marlin 336CB in 38/55 works great using Starline 2.125" cases and Lyman # 380681 cast bullets sized .381!

Carl S of Boothbay, Maine
5 Stars5 Stars5 Stars5 Stars5 Stars
I just ordered my second box of these 38-55 long cases. The consistency and accuracy have been unbelievable. Great product.

Gary P of South Texas, Texas
5 Stars5 Stars5 Stars5 Stars5 Stars
Last order I bought 250 of these long brass for my Marlin M1893. It is typical Marlin with a 0.381" bore and this brass is perfect for the task. It will shoot 1.25" at 50 yds with open sights and a cast 260 grn bullet sized to 0.382". Starline is top quality from the start for all my needs.

Lunar p of South, Florida
5 Stars5 Stars5 Stars5 Stars5 Stars
Starline is the only Brass that chambers in my Marlin 336CB's with the Ranchdog bullets I cast. If you are shooting a Marlin 336CB in 38-55 you know that they prefer a fatter cast bullet, this brass is what you want. Don't waist your money or time on anything else. For the Marlin 336CB in 38-55 this is the better length of brass.

W. B of Fort Worth, Texas
5 Stars5 Stars5 Stars5 Stars5 Stars
I've been using this brass[long] for several years in my Marlin Cowboys.They both require .381 bullets and this excellent brass works perfectly.My loaded rounds chamber and shoot much better that I can hold......kudos to Starline,you have my business for life. Thanks, W.Besty