Home | Ezine | Forums | Links | Contact
NitroExpress.com: Sources for Chrome Moly 58 caliber barrels ???

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies


*** Enjoy NitroExpress.com? Participate and join in. ***
You are not logged in. [Login] Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing
Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Pages: 1
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Sources for Chrome Moly 58 caliber barrels ???
      #135596 - 18/05/09 10:34 PM

anyone care to share any sources they have for reasonably priced chrome moly 58 caliber barrel blanks ???

Post Extras: Print Post   Remind Me!   Notify Moderator  
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #135605 - 19/05/09 12:30 AM

Well in my searching... so far Krieger comes up as one of the easiest...

they do a chrome moly barrel for the 577 Nitro Express, & do twist rates of 1 in 20" or 1 in 30" as standard... but for a one time additional set up charge, could do a custom twist rate, & they mentioned that they had done 1 in 48" before... which is about what I think I'm looking at ??? cost for 2 barrels would be $645.00 & they have an 18 - 20 week lead time, they could also at no charge, machine the outside diameter to as light as their lawyers would let them. to cut down on my machinists fitting time...

I was hoping to find something a bit cheaper, but the normal muzzleloader twist rate on the 58 caliber, seems to keep coming up as 1 in 70" twist, & I'm thinking I want a faster twist rate than that ???

another thing of key importance, is how strong is my action ??? I'll be doing a serial number / date search later today ( my machinist has the barrels trimmed to 22" ) & I'll be picking up the gun today... the serial is at least 5 digits, which puts the manufacturing date at the 1930's as the oldest, so, it should be good steel, since it's a Husqvarna... if the action is strong enough that I could do transition loads to smokeless ( with a filler ), this is what I was hoping for, we think we need the chrome moly barrels... if I'm stuck with black powder level loads only, then maybe the mild steel would be fine, if I could get a faster than 1 in 70" twist rate

still looking for suggestions... thanks

Post Extras: Print Post   Remind Me!   Notify Moderator  
Bramble
.375 member


Reged: 29/07/06
Posts: 950
Loc: England
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #135607 - 19/05/09 12:51 AM

CIP standard for 577 snider is 1:20. So 1:70 is not going to cut it, that is a ball twist realy.

$ 645 for 2 barrels is very good. especially if they are going to turn the OD for you. Even if you machinist is set up to do this you will pay him at least 4 hours labour to do this.

I would order the 1;20 and spend the waiting time getting everything else prepared.

Regards

Post Extras: Print Post   Remind Me!   Notify Moderator  
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: Bramble]
      #135608 - 19/05/09 01:06 AM

Thanks for the reply... I would have never guessed 1 in 20" for the 577 Snider...

BTW... any on line sources for Swedish shotgun proof marks ??? I'm trying to pin point just how strong my action is...

thanks again...

Post Extras: Print Post   Remind Me!   Notify Moderator  
DoubleD
.400 member


Reged: 23/11/03
Posts: 2486
Loc: Retired in Oklahoma
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #135611 - 19/05/09 01:45 AM

I repsonded two your original post two weeks ago.

http://www.pac-nor.com/barrels/

http://www.kriegerbarrels.com/

Pac nor has 9 groove 18 twist.

--------------------
DD, Ret.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Bramble
.375 member


Reged: 29/07/06
Posts: 950
Loc: England
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: Bramble]
      #135629 - 19/05/09 05:36 AM

BTW

I had a look at the photos you posted of the action.

It appears to have plenty of meat in the standing breach. IMH and not to be sued or quoted!!O you will be fine with NFB loads if you keep the velocities sensible.
If I were you however I would try to find a bulky powder that will work without a filler, how about 5477 ?

Regards

Post Extras: Print Post   Remind Me!   Notify Moderator  
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: Bramble]
      #135630 - 19/05/09 06:06 AM

Thanks DD... I have them bookmarked, but have not contacted them yet... still trying to decide the correct twist rate...

BRAMBLE...ahhh you post over there as well ???

I'll try to post some pics here...

http://www.thefiringline.com/forums/attachment.php?attachmentid=47133&d=1242675787

hmmm... don't see how to post pics, but here is a link, hope it's not against forum rules ???

Edited by MagnumWheelMan (19/05/09 06:08 AM)

Post Extras: Print Post   Remind Me!   Notify Moderator  
450_366
.400 member


Reged: 17/01/07
Posts: 1068
Loc: Sweden, west-coast.
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #135648 - 19/05/09 04:58 PM

Quote:

Thanks for the reply... I would have never guessed 1 in 20" for the 577 Snider...

BTW... any on line sources for Swedish shotgun proof marks ??? I'm trying to pin point just how strong my action is...

thanks again...



No proof law here, gladly.

But please post the marks and a full pic of the gun.

--------------------
Andreas

"Yeas it kicks like a mule he said, but always remember that its much worse standing on the other end"

Post Extras: Print Post   Remind Me!   Notify Moderator  
Bramble
.375 member


Reged: 29/07/06
Posts: 950
Loc: England
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #135650 - 19/05/09 05:56 PM

Quote:

BRAMBLE...ahhh you post over there as well ???





Perish the thought.

Post Extras: Print Post   Remind Me!   Notify Moderator  
DarylS
.700 member


Reged: 10/08/05
Posts: 27731
Loc: Beautiful British Columbia, Ca...
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: Bramble]
      #135689 - 20/05/09 02:47 AM

Considering the length to size ratio of normal .577" (around 750gr.), I'd not want faster than 24" of twist. While I dearly love PacNor barrels in .17 and .20 cal.s I think a lot of their larger barrels, specifically in .50 and larger are too tightly twisted for normal bullets. If a .50 w/24" twist will shoot exceptionally well to quite long range with a 600gr. bullet, how fast a twist does a .577 need to be for a shorter vs caliber 750gr.?

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

Post Extras: Print Post   Remind Me!   Notify Moderator  
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: DarylS]
      #135713 - 20/05/09 04:50 AM

My builder has 2 Sniders one a converted musket is 1 in 72, & one carbine ( origin unknown to me ) that also has a 1 in 72 twist... the long gun is just a barreled action, & the carbine wears some sort of "non stock" wood, but he has never fired it... maybe when my dies get here, I aught to volenteer loading up 5-10 rounds for him, just to see how the carbine shoots ???

my own personal opinion is a 1 in 48 to 50" twist seems about right, but my builder thinks I shouldn't go much faster than 1 in 60" ???

still trying to figure this out...

also I'm thinking I'd like to set up the gun if possible to shoot 58 cal Minnie balls with some sort of smokeless loads...

Thompson Center offers these...

http://www.midsouthshooterssupply.com/item.asp?sku=000307790

& I think a twist rate of 1 in 48" is standard in he 58 caliber muzzle loaders ??? my only trouble so far, is they do not list the bullet diameter of those bullets... I could have my builder make me a mold ( he makes them up all the time ) if I can't find what I'm looking for in a bullet... I'd just as soon not have to pay for 577 Nitro bullets, as I hoping to make something reasonably cheap to shoot...

Post Extras: Print Post   Remind Me!   Notify Moderator  
DarylS
.700 member


Reged: 10/08/05
Posts: 27731
Loc: Beautiful British Columbia, Ca...
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #135778 - 21/05/09 01:54 AM

The standard .58 minnie casts .575" in pure lead. In WW or other alloyed metals, look for .001" to .003" larger from the same moulds. The skirts of normal minnies are too thin for heavy loads of any type as they'll 'blow' coming out the muzzle.

48" is an OK twist for short, 500gr. to 580gr. bullets. The longer the bullet, the faster the twist is required - normal stuff. My .58 Hawken shot well with a 480gr. modified Old Style minnie with a modified and shortened thick skirt using 140gr. 2F. The heavier 570gr. Lyman Mould, modified (thickened skirt) to 610gr. shot less well and of course, kicked pretty hard with the same 140gr. charge, but did group reasonably well at 100 yards. That was all from a 60" twist Bill Large barrel, custom rifle. Lighter loads with the heavy bullet would cause slight tipping going through the paper and the heavy really didn't make nice round holes at 100 even with the heavier charges - slight tipping was evident, although grouping was usually into 2 1/2". The shorter bullets shot tighter - going 1 1/2" & made nice round holes. 480gr. is VERY short and light for a .58 cal bullet.

I think any desire to shoot heavy, 700gr. to 900gr. longer bullets should be attempted with a much faster twist, to allow stabiltiy after upsettage in an animal. Twists on the edge of being unstable cause bullet tumbling, and verring off course, bouncing off bones instead of smashing them. This, we've seen using 410gr., 370gr. slugs from 48" twists in .54cal. and .50 cal. muzzleloaders. On lioght game like deer, this usually doens't happen, but on heavy game like Moose and Elk, it does. Slow twists and long slugs don't work well together - for us.

The larger the bore, the slower the twist can be - IF bullet length is held short. I'd still go with a 28" to 36" twist in a breechloader. It will shoot all bullet weights you are likely to use - smokeless or BP. I'd hold groove depth to from .005" -.008" max. My opinion, with facts and experiences.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

Post Extras: Print Post   Remind Me!   Notify Moderator  
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: DarylS]
      #135782 - 21/05/09 02:22 AM

thanks for the informative post... still thinking

Post Extras: Print Post   Remind Me!   Notify Moderator  
MagnumWheelMan
.224 member


Reged: 04/05/09
Posts: 29
Loc: southern Minnesota
Re: Sources for Chrome Moly 58 caliber barrels ??? [Re: MagnumWheelMan]
      #136233 - 27/05/09 11:00 PM

I found an interesting site... Mountain Molds makes custom bullet molds, & part of the bullet mold calculator lists suggested twist rates

I "built" a couple of interesting bullets ( 5 or 6 different profiles n weights between 500 & 550 grains ), & my twist rates varried from 1 in 42" to 1 in 46"

here is a link to the calculator... I'm currious if others have seen it & or agree with the suggested twist rates ???

http://www.mountainmolds.com/

click on line bullet design, & choose your caliber... I thought it was pretty interesting...

if I go up to 650 grains, the twist rate moves up to 1 in 37" with the same bullet profile

Edited by MagnumWheelMan (27/05/09 11:22 PM)

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Extra information
0 registered and 20 anonymous users are browsing this forum.

Moderator:  CptCurl 

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 1695

Rate this topic

Jump to

Contact Us NitroExpress.com

Powered by UBB.threads™ 6.5.5


Home | Ezine | Forums | Links | Contact


Copyright 2003 to 2011 - all rights reserved