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Post by younghunter86 on Feb 18, 2009 23:15:05 GMT -5
I found a great deal on a used 10ml this morning.  If the buyer drops off the cash for a .223 on Saturday morning I will be ordering a .45 Pacnor on Monday. I'm planning on going with the standard dd barrel but with one change. The specs are listed below: - 25-27  ?-standard ml contour -11 degree muzzle crown -22 twist I really don't know what length I should go with. The gun will not be used for stalking. Strictly walk to stand and wait. I'm leaing towards 27 or 28, because if I found out later that I don't like the length I can always get it shortened. Making it longer could be an issue. **Length is now going to be 25-27", no more.**Ok edited subject to a more pressing question. I have a blued receiver. What type of barrel should I go with. moly or SS??? |
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Post by smokeless77 on Feb 18, 2009 23:47:24 GMT -5
Younghunter, Try the( musings on looong barrels) thread by harley lot's of info on diff size barrels.
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Post by rbinar on Feb 19, 2009 1:22:40 GMT -5
-?"ss barrel -standard ml contour -11 degree muzzle crown -22 twist In order: SS barrel? Is your receiver Stainless? If so order a stainless barrel. If not get a moly. Standard is fine or a slightly steeper contour it doesn't matter a lot. You might save a few ounces of weight. The crown is not super critical but I like straight 90 degrees it makes loading easier for me but maybe not for you. 22 twist is about normal but tighter twist will work. I think the barrel should be 23 to 25 inches. Long enough for speed short enough to point. All the above are just opinions you'll find what you like. |
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Post by younghunter86 on Feb 19, 2009 8:21:30 GMT -5
In order: SS barrel? Is your receiver Stainless? If so order a stainless barrel. If not get a moly. RB, Is there an issue with putting a SS barrel on a blued receiver? I was hoping to go with SS due to moisture resistance. |
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Post by rexxer on Feb 19, 2009 9:16:24 GMT -5
There would be no issues putting a ss on a blued action except color. Pacnor does offer as a option, some kind of a coloring process on there ss barrels,otherwise the ss barrel will come bead blasted which will knock the glare off.
The chrome-moly might offer a slight advantage being a litte harder but I wouldn't think this is much of a problem.Some of the custom barrel makers are putting out 10-1 stainless compared to blued.Most of the long range comp. guns are ss also. I'm sure you will be happy with either!
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Post by Harley on Feb 19, 2009 9:48:32 GMT -5
For your consideration before ordering a barrel, Krieger notes:
1. Chrome-moly may be harder to break-in (shouldn't be an issue with Pac-Nor)
2. Chrome-moly may attract more copper fouling.
If you're thinking about fluting the barrel as an option, Krieger also lists the following advantages:
1. weight saving
2. quicker cooling between shots
3. more rigidity, resulting in less vibration or "whip".
Harley
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Post by edge on Feb 19, 2009 10:57:50 GMT -5
I don't know why: "(shouldn't be an issue with Pac-Nor)"
Why would it be any different than from Krieger?
Fluting is normally done on a heavier than normal tapered barrel, hence the advantages.
I would think that a standard barrel that is fluted would be more "whipy", but a heavy tapered barrel will retain the advantages of the heavy taper and only be a bit heavier than standard.
edge.
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Post by Harley on Feb 19, 2009 11:09:42 GMT -5
Edge, I have no personal experience with Krieger, so can't comment on the relative finished/polished/lapped condition of their barrels. My experience with Pac-Nor, both the ML and my custom 300 Win Mag, is that no break-in is required.
Fluting: I think Krieger was making the point that fluting is in itself a way of stiffening a barrel. I don't know if that's true or not, just passing it on.
Harley
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Post by sagittarius on Feb 19, 2009 11:27:37 GMT -5
I think a blued receiver with a stainless barrel looks cool.  |
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Post by younghunter86 on Feb 19, 2009 11:38:07 GMT -5
I think a blued receiver with a stainless barrel looks cool. That's what I'm hoping for! I was just concerned when rb mentioned the moly. |
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Post by lwh723 on Feb 19, 2009 11:38:43 GMT -5
Fluting: I think Krieger was making the point that fluting is in itself a way of stiffening a barrel. I don't know if that's true or not, just passing it on. Back in my mechanics of materials class in college, I remember going over that a solid bar of steel isn't necesarily as strong as a tube of steel with the same external dimensions. It has something to do with the moment about the neutral axis. I imagine it's the same concept with a fluted barrel. |
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Post by rexxer on Feb 19, 2009 12:40:23 GMT -5
If comparing strength or being rigid, two barrels with the same diameters, the non-fluted will be more rigid. If comparing weight vrs. rigidity the fluted barrel will win. Two barrels weighing the same, one fluted,one not,the fluted barrel would be allowed to have a larger dia. resulting in being a little more rigid. In the Savage Pacnor barrels I believe both fluted and non-fluted barrels are the same dia. so the fluted barrel would be a little less rigid and a little lighter!
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Post by jims on Feb 19, 2009 12:52:15 GMT -5
I do believe rexxer has nailed it but I am sure other opinions will follow.
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Post by lwh723 on Feb 19, 2009 13:05:47 GMT -5
If comparing strength or being rigid, two barrels with the same diameters, the non-fluted will be more rigid. If comparing weight vrs. rigidity the fluted barrel will win. Two barrels weighing the same, one fluted,one not,the fluted barrel would be allowed to have a larger dia. resulting in being a little more rigid. In the Savage Pacnor barrels I believe both fluted and non-fluted barrels are the same dia. so the fluted barrel would be a little less rigid and a little lighter! Ok, I stand corrected. It's been six years, and I don't really use any mechanics of materials in microelectronics packaging.  www.snipercountry.com/Articles/RealBenefitsBarrelFluting.aspI thought this was a fairly good explaination on barrel stiffness/fluting. I think he's way off on his heat dissapation analysis though. The resistance from conduction in a thermal circuit of the barrel is going to be tiny compared to the resistance of convection off of the surface of the barrel. Therefore, the gain with fluting would be more surface area for convection (just like cooling fins). That being said, I'm thinking any cooling gain would be slight. |
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Post by rbinar on Feb 20, 2009 3:11:03 GMT -5
I think a blued receiver with a stainless barrel looks cool. That's what I'm hoping for! I was just concerned when rb mentioned the moly. The way I saw your question it seemed you were asking is one steel is better than the other. That's not the case. If you already have a preference it will work as well as the other. |
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If the buyer drops off the cash for a .223 on Saturday morning I will be ordering a .45 Pacnor on Monday. I'm planning on going with the standard dd barrel but with one change. The specs are listed below:
?
