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Old 02-03-2017, 02:27 PM
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Why is .375 Winchester Brass so hard to find?


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Why is .375 Winchester Brass so hard/expensive to find? Does anyone make a firearm right now chambered for .375 Winchester? Is .375 Brass stronger than 30-30 Brass?
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Old 02-03-2017, 03:43 PM
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375 brass is thicker walled than 30-30 .
using 30-30 brass works but it is only the crimp that holds the projectile.
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Old 02-03-2017, 04:19 PM
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You can also make it from .38-55. Starline is rumored to be planning a run of .375 brass in the near future.

Good search engine here. Go to advanced search and search .375 Winncheter and use Marshal Stanton as the poster. Marshal has discussed using .30-30 brass at high pressure as have many others on this board. Back around 2000 and-01this was almost the ".375 Winchester" board!
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Old 02-04-2017, 07:45 AM
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FWIW, there's a sale on now at "Larry's Place" on the shorter Starline 38-55.
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Old 02-04-2017, 02:35 PM
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Is 38-55 thicker in the wall than 30-30 brass.?
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Old 02-04-2017, 04:18 PM
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Not that I have seen. When Sunday Creek was looking at high pressure .375 Winchester loads I used some old .38-55 cases for full power .375 Winchester loads. The brass performed well as we knew it would. Older - post WWII - .38-55 brass is pretty thin.it worked fine with compressed loads.

Back in the old Marlin Talk days the thin .38-55 brass was sought after due to the need to use large diameter cast bullets in the Marlin rifles.
Marshall has posted on this some.

Late Winchester. 38-55 brass ushered 7n the shorter, thicker case.
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Old 02-04-2017, 11:59 PM
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Be nice to have thicker brass so my sizing die sizes small enough to hold bullets instead of just the crimp.
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Old 02-05-2017, 05:03 AM
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Quote:
Originally Posted by William Iorg View Post
You can also make it from .38-55. Starline is rumored to be planning a run of .375 brass in the near future.

Good search engine here. Go to advanced search and search .375 Winncheter and use Marshal Stanton as the poster. Marshal has discussed using .30-30 brass at high pressure as have many others on this board. Back around 2000 and-01this was almost the ".375 Winchester" board!
I just checked my trash emails. I had thought I got one from them saying they were running 375 but it was 358 instead. I'd not be surprised if they did it
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Old 02-05-2017, 06:08 AM
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So, if I am reading correctly, There is about no difference between making .375 brass from either 30-30 or 38-55. Is one of these any thicker than the other? Thanks.
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Old 02-05-2017, 06:46 AM
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I'll only mention that if you choose to utilize the short Starline 38-55 brass, there's really no "making" to it. You might want to pull up the Buffalo Bore site and read the rather lengthy explanation and narrative there reference using their 38-55 loads in ANY .375. I've used their .38-55 heavy load without issue in my .375s.
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Old 02-05-2017, 04:00 PM
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These interesting threads always come up on weekends when I am on a tablet and away from my notebook.
Why Winchester changed bullet diameter and brass thickness has been the cause of many threads. Marlin was certainly caught short with the .38-55 Cowboy and the .375 Winchester.
I measure .30-30 case necks and old .38-55 at .011"
I measure current Winchester .38-55 brass at .015"
20lb. copy paper is a rough .040"
Everyone comes up with a different empty case weight.
I weigh empty .375 Winchester at 152.3 grains
New Winchester .38-55 at 141.7 grains.
Old .38-55 cases at 131.8 grains.
I imAgine I have listed slightly different weights on Sunday Creek .375 Winchester thread. I made cases from .30-30 and .32WINCHESTER special just to try out.
I' Mm post a picture of a sectioned case next to a .30-30. I think its from the old Marlin Talk board.
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Old 02-05-2017, 05:43 PM
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I think this picture was originally posted on. The Marlin Talk Board. It may be on this board in some forgotten thread. I just saw it on an old leverguns post.
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Old 02-05-2017, 07:13 PM
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Thanks for all of that great info, W.I. Actually, I am wanting to make some 7mm International Rimmed cases out of .375 winchester. I've got about 100 that I made years ago for match shooting in shiloutte. We felt that since the .375 brass was thicker (stronger) we could load it hotter. It looks as though .38-55 brass is actually thinner than 30-30, so if I want to make some more cases, I may be just as well off to make it out of 30-30. Still would like to have some .375 brass. Maybe starline will make a run soon.
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Old 02-09-2017, 08:13 AM
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Try Captech International/Jamison. We 375 owners on the Marlin forum bought them out after one of the members found it. However, they are planning a new run at the end of the first quarter.
BTW Winchester just made a run of 200 gr ammo.
If you are into the 375, i recommend the 375 section on that forum. It is under the Hyphenated, section
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