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ww
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33-40 krag
Mar 27th, 2019 at 9:44am
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Ive spent some time this winter build a rolling block in 33 caliber with a Green Mountain 1:12 twist #4 profile barrel. Threaded and fit to the reciever, turned 1/2 round and trimmed to 32".  Need to consider what to chamber it in. Originally was going to go with 33WCF,  then considered 33-47.  Then acquired 8# of 30-40 Krag brass and was wondering if there was something  in 33 caliber based on the Krag brass by simply necking it up. Rreamer rental has a 33WCF the others will require having a reamer being made or outsourcing.
But was wondering about a 33-40 Krag.
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marlinguy
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Re: 33-40 krag
Reply #1 - Mar 27th, 2019 at 11:47am
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Bill, my choice would be .33-40 based on the .32-40 case, or .38-55 case sized down. It's always tempting to make something based on a lot of brass you have, but then reality of reamer and die costs might make it less of a bargain.
The .33-40 based on .30-40 Krag might be a great round, but I wouldn't do it based on saving money on brass. A .30 caliber barrel chambered in .30-40 Krag would be more of a cost savings all around.
  

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ww
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Re: 33-40 krag
Reply #2 - Mar 27th, 2019 at 12:34pm
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PTG lists a 33-47 Winchester reamer but I can't find a drawing of it or dimensions. $170. So I'm not sure what the parent brass would be. Maybe need to go back to square 1 and chamber it in 33WCF , reamer rental $60 and ive already formed brass with dies I have. 
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marlinguy
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Re: 33-40 krag
Reply #3 - Mar 27th, 2019 at 1:12pm
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The .33-47 should be based on the .38-55 case. But of course a .32-40 case also works.
  

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Re: 33-40 krag
Reply #4 - Mar 27th, 2019 at 2:14pm
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You haven't said what the rifle would be used for but, with the barrel weight and length, I would say it would be mostly target work.

If for target shooting, I would not go larger than the Krag case! The 33/47 would be better (32/40-38/55 case) and I shoot a 33 ELCO, it's the full length 357 Max case, necked to 33. I've done well with it, shooting groups as small as .463 @ 200 yards, in a match.

The 33 Win, will be a steep learning curve, getting it to shoot accurately, as there is no loading info, to get you "in the ball park", to start with.

As has been suggested, a 30 cal barrel, would be a better starting point, for your brass. There is loading data for it. I shot my 30/40 HW with some success in matches but, 30/30 would be a better option in that caliber.

Where the 30/40 case, starts to shine, is in 38 and 40 cal.

Frank
  

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Schuetzenmiester
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Re: 33-40 krag
Reply #5 - Mar 27th, 2019 at 2:35pm
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frnkeore wrote on Mar 27th, 2019 at 2:14pm:
Where the 30/40 case, starts to shine, is in 38 and 40 cal.

Frank


Frank, Why is the 30/40 case so shiny in 38 and 40 cal?  Doesn't the .357 case have enough powder capacity for 38 and 40 cal?
  

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ww
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Re: 33-40 krag
Reply #6 - Mar 27th, 2019 at 2:52pm
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I have annother rolling block that has a 40 caliber  barrel thats not chambered that i had considered chambering in 40 Krag/40-60 maynard. That maybe a better choice for the 30-40 brass.
The PTG reamer is listed as 33-47 Winchester , i woundered about the winchester .
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Re: 33-40 krag
Reply #7 - Mar 27th, 2019 at 3:14pm
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.30-40 case on a .338 barrel (BN or straight) seems like an obvious wildcat. Bet it has been done before.
It would make a great hunting cartridge for any North American game.
Might be a little over capacity for target with smokeless, but might work for mid-range with the fast twist and long bullets.
Think the .32-40 Remington was on a .30-40 case.
Interesting idea for someone else to try.
Chuck
  
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Re: 33-40 krag
Reply #8 - Mar 27th, 2019 at 3:33pm
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I have a similar animal ... a large action Martini that was re-bored and re-rifled by Ron Smith in Alberta to .338/.303 British and it is a tack driver.  (But of course that is to be expected with any of Ron's work.)  Cases are dead easy to fire-form and mine absolutely loves H322 with a 200 grain cast bullet.  Your idea of the .338/.30-40 Krag would be nearly identical, but would have just a bit more powder capacity than mine.  Just my personal opinion, but since you have a large quantity of .30-40 Krag brass I'd do it.  If you're not looking for a competition quality chamber you could use a .30-40 Krag reamer to cut the basic chamber and then finish it up using a .338 neck and throat reamer.  You could neck size formed cases using a .338 Win Mag sizing die (that's what I did until I was lucky enough to buy a used set of actual .338/.303 British dies c/w a neck sizing die).  Easy peasy ...
  

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Re: 33-40 krag
Reply #9 - Mar 27th, 2019 at 3:34pm
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Schuetzenmiester wrote on Mar 27th, 2019 at 2:35pm:
frnkeore wrote on Mar 27th, 2019 at 2:14pm:
Where the 30/40 case, starts to shine, is in 38 and 40 cal.

Frank


Frank, Why is the 30/40 case so shiny in 38 and 40 cal?  Doesn't the .357 case have enough powder capacity for 38 and 40 cal?

Bob,
Because I like the 38/50 Rem and If I could take the recoil, I'd like the 40/60 Maynard or 40/70 SS. Both seem to be very accurate with BP or smokeless, with data available.

35 cal, is all the 357 case can take take and load the bullet inside the case. I guess you could make a BS only chamber though.

Frank
  

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Re: 33-40 krag
Reply #10 - Mar 27th, 2019 at 3:52pm
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If you want something larger than 30 cal, but smaller than 38 or 40 cal, the old 30 ARMY (Krag) case could be used to make a shortened version of the 35 Winchester cartridge.
  

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Re: 33-40 krag
Reply #11 - Mar 27th, 2019 at 4:58pm
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frnkeore wrote on Mar 27th, 2019 at 3:34pm:
Schuetzenmiester wrote on Mar 27th, 2019 at 2:35pm:
frnkeore wrote on Mar 27th, 2019 at 2:14pm:
Where the 30/40 case, starts to shine, is in 38 and 40 cal.

Frank


Frank, Why is the 30/40 case so shiny in 38 and 40 cal?  Doesn't the .357 case have enough powder capacity for 38 and 40 cal?

Bob,
Because I like the 38/50 Rem and If I could take the recoil, I'd like the 40/60 Maynard or 40/70 SS. Both seem to be very accurate with BP or smokeless, with data available.

35 cal, is all the 357 case can take take and load the bullet inside the case. I guess you could make a BS only chamber though.

Frank


Duh!! ?  Huh  Why didn't I think of that  Embarrassed
  

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Re: 33-40 krag
Reply #12 - Mar 27th, 2019 at 7:18pm
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I've got one in a Ruger No.1.  I got a .30-40 Krag reamer from PTG.  At the same time I ordered a neck and throat reamer for .338.  Worked great.  It's been my primary hunting rifle for about 15 years now.  I call it a .33 Krag.  A few years after getting the .338 I ordered a neck and throat reamer for .375, which I call a .38 Krag.  In the .33 Krag with 9X scope I shoot a 225 grain paper patched bullet at 2400 fps.  I also shoot schuetzen offhand with it using a 239 grain smooth sided bullet at about 1400 fps.  Great practice for hunting.  Oh, and a 140 grain SWC loaded with a little fast pistol powder makes a great grouse round at around 1200 fps.  My favorite rifle and cartridge by far.
  
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Re: 33-40 krag
Reply #13 - Mar 28th, 2019 at 7:07pm
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Just sell me the brass, and build something else. I have 3 30-40's and am lusting for a high wall in it.
  

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Re: 33-40 krag
Reply #14 - Mar 31st, 2019 at 10:02am
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Doughty wrote on Mar 27th, 2019 at 7:18pm:
I've got one in a Ruger No.1.  I got a .30-40 Krag reamer from PTG.  At the same time I ordered a neck and throat reamer for .338.  Worked great.  It's been my primary hunting rifle for about 15 years now.  I call it a .33 Krag.  A few years after getting the .338 I ordered a neck and throat reamer for .375, which I call a .38 Krag.  In the .33 Krag with 9X scope I shoot a 225 grain paper patched bullet at 2400 fps.  I also shoot schuetzen offhand with it using a 239 grain smooth sided bullet at about 1400 fps.  Great practice for hunting.  Oh, and a 140 grain SWC loaded with a little fast pistol powder makes a great grouse round at around 1200 fps.  My favorite rifle and cartridge by far.


Sounds like a good plan.
Reamer Rentals has reamers. I neck sized some up to 33 caliber with a Lee 33WCF die without any problems.
Thank you.
WW
  
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