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357 Mag case conversations (Read 4970 times)

n.r.davis Oldtimer Offline Posts: 587 Joined: Dec 3^rd, 2015	357 Mag case conversations Jul 14^th, 2021 at 11:26am	Print Post
	Got a Martini Action coming and was going to build a .218 Bee on it. Got to thinking about making a Switch Barrel. I have a .38 Barrel Blank so I can do a 357 Mag for Deer. Would like to do a .22 cal based on the 357 case. Any suggestions? This would be for a Walking Varmint with shots under 200 yards. Woods are thick where I'm at. Winter is coming..... David


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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: 357 Mag case conversations Reply #1 - Jul 14^th, 2021 at 11:41am	Print Post
	22 sounds interesting especially on how to go about sizing down the cases.

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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Dellet Frequent Elocutionist Offline Posts: 1138 Joined: May 19^th, 2017	Re: 357 Mag case conversations Reply #2 - Jul 14^th, 2021 at 11:48am	Print Post
	You could start with a 22 Rem Jet. and if that isn't enough case capacity neck down a 256 Win mag. There are a few 22 wildcats based on the 38 spl or 357 case. all the way up to a 222 rimmed that can be formed from 357 max. Just depends on how much horsepower you want


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gnoahhh Oldtimer Offline Posts: 918 Location: Gaithersburg, MD Joined: Mar 31^st, 2010	Re: 357 Mag case conversations Reply #3 - Jul 14^th, 2021 at 12:15pm	Print Post
	Don't ignore the 5.6x50R. Basically the same head diameter as .357 so the same extractor should work for both. At full snort it's about like a .223, and can be loaded down to .22 RF level and everywhere in between - pretty versatile IMO.


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3935 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: 357 Mag case conversations Reply #4 - Jul 14^th, 2021 at 3:08pm	Print Post
	with that volume of case you might could consider a 25 caliber ....

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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bnice Frequent Elocutionist Offline Posts: 1890 Location: Iowa Joined: Nov 30^th, 2006	Re: 357 Mag case conversations Reply #5 - Jul 14^th, 2021 at 3:35pm	Print Post
	25 cal, 256 Winchester magnum. Has anyone got a reamer setup for a breech seat version of this? Also A question on 5.6x50R that was suggested. Is brass available anywhere?


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gnoahhh Oldtimer Offline Posts: 918 Location: Gaithersburg, MD Joined: Mar 31^st, 2010	Re: 357 Mag case conversations Reply #6 - Jul 14^th, 2021 at 3:59pm	Print Post
	Brass is out there. RWS is a major player. Not dirt cheap, but it's not like you'll be feeding an AR-15.


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John Rigby Full Member Offline Posts: 215 Location: Midwest Joined: Nov 8^th, 2005	Re: 357 Mag case conversations Reply #7 - Jul 14^th, 2021 at 4:30pm	Print Post
	There is always the 30 Wesson. With the proper twist you have a heavy 180 grain deer killer.

	John Rigby
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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3935 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: 357 Mag case conversations Reply #8 - Jul 14^th, 2021 at 5:30pm	Print Post
	John Rigby wrote on Jul 14^th, 2021 at 4:30pm: There is always the 30 Wesson. With the proper twist you have a heavy 180 grain deer killer. Good choice - I have a cadet in 30 Wesson. 1-10 twist.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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Skalkaho Oldtimer Offline Posts: 804 Location: Montana Joined: Sep 29^th, 2006	Re: 357 Mag case conversations Reply #9 - Jul 14^th, 2021 at 6:11pm	Print Post
	Used to have a 17 Saunders Jet. Take 22 jet cases ,neck down to 21-20 then to 17 and fire form. Great for Ruger # 1 and 3. Had it on a TC contender,both rifle barrel and short 15" with BR forearm. The caes were bombproof as we all know about the 357 and max case. Dick also tried the 357 Max but the small 357 Mag case was perfect powder capacity.....

	May the Bullet Gods be with you.......
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Otony Senior Forum Member Offline Posts: 251 Location: Bandon, Oregon Joined: Jun 5^th, 2021	Re: 357 Mag case conversations Reply #10 - Jul 14^th, 2021 at 10:00pm	Print Post
	My third post after lurking forever! Think about trying a .25 Classic, which is basically a .30 Herrett necked down to quarter bore. A bit more capacity than .25-20 or .256, but still markedly less than a .25-35, which should give you a short cartridge that fits your action (assuming it is a Cadet) and has plenty of oomph for 200 yard shooting. Frankly I have no idea how difficult it would be to form cases though, something which has always been a bit of an issue with .256 Otony
	« Last Edit: Jul 14^th, 2021 at 10:14pm by Otony »
	Otony
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CharleHunter Senior Forum Member Offline Posts: 364 Joined: Feb 8^th, 2019	Re: 357 Mag case conversations Reply #11 - Jul 15^th, 2021 at 9:05pm	Print Post
	if we are talking .25 you could look at using the 5.6 x 50R to make a rimmed version of the 25 Copperhead (.222 necked to 25) similarly you could do a .222 Rimmed using the same case or Bertram cases.


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40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: 357 Mag case conversations Reply #12 - Jul 16^th, 2021 at 11:12am	Print Post
	I'd suggest either .222 Rimmed or 5.6 X 50R Mag. 40 Rod


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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: 357 Mag case conversations Reply #13 - Jul 16^th, 2021 at 12:04pm	Print Post
	Joe Do just listed 100 each 17 Ackley Bee cases in the for sale section and something else that might also work. That is if the rim size is also what you are looking for to fit the same extractor that you plan on using for your switch barrel project.
	« Last Edit: Jul 16^th, 2021 at 12:10pm by JLouis »
	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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1isenough Full Member Offline Posts: 202 Location: Louisville, KY Joined: Dec 28^th, 2017	Re: 357 Mag case conversations Reply #14 - Jul 16^th, 2021 at 8:10pm	Print Post
	Love the Martini small frame - have 3 sporterized rifles and 10 barrels. Regarding the .357 groove barrel, I would suggest chambering at 357 Maximum. Contrary to some opinions, the round chambers just fine in a small frame Martini. You can still shoot 38 Spcl and 357 Mag, but also load up to higher power/heavier bullets - much more versatile. On the 22 cal option I agree with others regarding the 222 rimmed and 5.6x50R, which use the 357 extractor and both perform very well. Be sure you anneal, because they are expensive/rare. I personally would suggest the 219 Zipper, and then you can add barrels for 25-35, 32-40, 30-30 and 35-30 all with with the same extractor.


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