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Muzzle Diameter for a .376 Steyr?
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Some of you have .376 Steyrs ad have answered some questions for me about one I will build. I also have a stock leftover from when MRC was making CZ rifles. The action fits perfectly and the stock is cut for a Montana #2 contour.

Montana is clearing out some barrel blanks, they have a .375/12 twist but they say their #2 contour, which is .600 at the muzzle, is too light for a .375, would only leave .1125.

Just wondering what the muzzle diameter is on some of the other guns that were built, I know Jeff built one with a LW Light Bavarian and someone else with a light Douglas barrel.


thanks,

Rob
 
Posts: 1705 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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Medium heavy contour, short (20") length.

Short and stout.


 
Posts: 7158 | Location: Snake River | Registered: 02 February 2004Reply With Quote
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So we all know that I am not a gunsmith. But in general I have always heard that 100/1000 per side is the minimum at the muzzle.

You could always shorten the bbl until your reach that.

I like 23" for a 376 steyr but I am sure the cartridge performs fin at 21.


Mike

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Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.




What I have learned on AR, since 2001:
1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken.
2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps.
3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges.
4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down.
5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine.
6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle.
7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions.
8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA.
9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not.
10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact.
11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores.
12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence.
13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances.
 
Posts: 10181 | Location: Loving retirement in Boise, ID | Registered: 16 December 2003Reply With Quote
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quote:
Originally posted by Recoil Rob:

Montana is clearing out some barrel blanks, they have a .375/12 twist but they say their #2 contour, which is .600 at the muzzle, is too light for a .375 , would only leave .1125.

Rob


I have to disagree with you for 2 reasons:

1) I have a Sako(FN) 375 H&H that is .580 at the muzzle. I have shot it extensively (in several countries) and never had a problem.

2) If .600 was to small for the muzzle of a 375 MRC would not have produced it.


Jason

"You're not hard-core, unless you live hard-core."
_______________________

Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt.

Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry
Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure.

-Jason Brown
 
Posts: 6842 | Location: Nome, Alaska(formerly SW Wyoming) | Registered: 22 December 2003Reply With Quote
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quote:
Originally posted by JBrown:
quote:
Originally posted by Recoil Rob:

Montana is clearing out some barrel blanks, they have a .375/12 twist but they say their #2 contour, which is .600 at the muzzle, is too light for a .375 , would only leave .1125.

Rob




I have to disagree with you for 2 reasons:

1) I have a Sako(FN) 375 H&H that is .580 at the muzzle. I have shot it extensively (in several countries) and never had a problem.

2) If .600 was to small for the muzzle of a 375 MRC would not have produced it.



1-I didn't say it was too light, Montana Rifleman did, they won't make the barrel.

2-See #1, they haven't made the barrel, they say it will be too light.

3-But thanks for answering my question about yours, .580.
 
Posts: 1705 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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Picture of JBrown
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Sorry, I didn't understand your statement.

I think that many barrel makers are reluctant to go too thin for liability reasons. I really don't see the reasoning behind it. If barrels made 50 or 100 years ago can hold up with .100" or less at the muzzle. I really don't see modern steels wouldn't hold up as well.

quote:
Originally posted by Recoil Rob:
I know Jeff built one with a LW Light Bavarian and someone else with a light Douglas barrel.


thanks,

Rob


I believe I sold that one to Jeff. I ended up going with a 5130 LW for my second 375. I did have Woody change the muzzle dia from .650" to .625".


Jason

"You're not hard-core, unless you live hard-core."
_______________________

Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt.

Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry
Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure.

-Jason Brown
 
Posts: 6842 | Location: Nome, Alaska(formerly SW Wyoming) | Registered: 22 December 2003Reply With Quote
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Muzzle diameter runs about .6780 to .6820 on my Steyr Safebolt in 376 Steyr. Variation is due to the twisty outside surface of the barrel.
 
Posts: 80 | Location: Ohio | Registered: 11 September 2008Reply With Quote
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Thanks Jason, I agree, liabilities are the reason.

I have a stock set up for a #2 contour but they won't do smaller than a #4, .600 vs. .650.

I think I may have to have it recontoured a bit.


DC,thanks for your info, how long is that barrel?

thanks, Rob
 
Posts: 1705 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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That's a 20" barrel.
 
Posts: 80 | Location: Ohio | Registered: 11 September 2008Reply With Quote
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Picture of z1r
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You know, just cuz you have to buy a barrel with a muzzle diameter greater than what you'd like doesn't mean it has to stay that way.




Aut vincere aut mori
 
Posts: 4869 | Location: Lakewood, CO | Registered: 07 February 2002Reply With Quote
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quote:
Originally posted by z1r:
You know, just cuz you have to buy a barrel with a muzzle diameter greater than what you'd like doesn't mean it has to stay that way.


I understand that Mike, and the muzzle diameter is not what concerns me in and of itself. I have a finished stock that is inletted for a lighter contour so I'd have to find a gunsmith willing to turn the barrel down to fit the stock when chambering and threading.
 
Posts: 1705 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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I know these barrels are cheap but it seems like the need to recontour would make it cheaper to just order what you want to from another manufacturer.
 
Posts: 279 | Registered: 31 May 2004Reply With Quote
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I was under the impression all barrel makers have their own contour so no other barrel makers would match an MRC#2 which is what the stock is made for.

Besides, perhaps I'm wrong but I don't know of a barrel maker that will go that thin at the muzzle.

Might just be easier to modify the stock.
 
Posts: 1705 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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Rather than concentrating soley on muzzle diameter you should consider the barrel as a whole. Is that contour going to provide you with a properly balanced rifle? What good is it to have all the weight concentrated just ahead of the receiver. Offhand shooting will be fun with the light muzzle wandering all over as you try to steady for a shot.

Besides, seems to me the easier way to get a barrel to fit the stock is to re-inlet the stock for the larger diameter barrel.




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Posts: 4869 | Location: Lakewood, CO | Registered: 07 February 2002Reply With Quote
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I think you're right, thank you.
 
Posts: 1705 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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