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Post by jeff on Jan 20, 2009 13:38:51 GMT -5
Ordered a 50 pacnor today.
Double DD barrel
50 [.510]
26"barrel
20 twist
6 grove
Match Grade SS/ bead blasted
Standard 11 degree crown
#7 straight taper .800@ 26"
Casey did check the 505 gibbs but was so tight he couldn't get the mmp and 300 gr hornady out, and the .510 was very tight, with a great seal he said. Also the 50BMG with the 8 grove is doable, however it would have to be turned down to a .800 which would cost another $100. I'll be the goat ;D
Tomorrow [wens] I'm going in for a total knee replacement so I'll talk to guys in a few weeks.
Jeff~
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Post by wilmsmeyer on Jan 20, 2009 13:54:51 GMT -5
Sounds like the "crew" needs a medical staff today.
That is great news about you getting a .50 Pac-nor going. I will be awaiting the reports. I really think I will go this way before a .45. I have no great reason...I just like the big hole and don't mind keeping my shoulder loose.
Any reason for the choice of 6 groove 1:20 twist? Something keeps tugging on me for the faster twist 8 groove 1:14 twist. I keep comparing a .458 Win Mag to a .50 Pac.nor shooting big .458 bullets fast. Am I missing anything or is either likely to be just fine?
This is almost unchartered territory. Good luck getting your rig going and follow dr's orders. Best wishes
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Post by jeremylong on Jan 20, 2009 14:06:17 GMT -5
Its good to see the 50 getting ordered. I look forward to seeing some results
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Post by edge on Jan 20, 2009 14:50:30 GMT -5
I was surprised to hear that Casey could not load the Gibbs, my 505 barrel loads fine!
Mine is also a 1:20 twist which was a non standard from Krieger and it is a 6 groove too. Assuming that you will always use a standard sabot the 1:20 twist will be fine. Since I make my own I regretted not going 1:16....
edge.
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Post by wilmsmeyer on Jan 20, 2009 14:56:02 GMT -5
Edge,
Could you shed your opinion on twist and applications that come into play? If sabot shredding is not an issue, I can not envision a reason why a faster twist wouldn't be better and more encompassing of all types of saboted and sabotless shooting.
What say you?
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Post by edge on Jan 20, 2009 15:46:17 GMT -5
In my 505 1:20 twist and using custom sabots I shoot a 150 grain 8mm bullet. I also shot 250 SW's in a short MMP sabot.
I would not hesitate to go faster, but I don't see a huge need to unless there was a new sabot on the market that could shoot undersized bullets. It really comes down to picking your bullet because that will determine the twist needed. If you want a heavier bullet, my 1:14 will stabilize a .338 250 grain Accubond but I don't see many folks going in that direction.
edge.
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Post by wilmsmeyer on Jan 20, 2009 16:12:39 GMT -5
What is the reasoning for a .458 Win Mag for having a 1:14 twist? Big, long 500 gr bullets I suspect.
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Post by bigmoose on Jan 20, 2009 16:31:17 GMT -5
Jeff,
Best of luck, hope you can run the 100, in months to come.
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Post by dave d. on Jan 20, 2009 17:29:23 GMT -5
:)goodluck jeff and congrats on your new .50 barrel.
:)wilms i think for any standard let say bullet that most of us will shoot the 20 is plenty.i also feel that any of the 3 twist's will work great.
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Post by sw on Jan 20, 2009 20:48:46 GMT -5
:)Jeff, I'll pray that all goes well and suspect it will. I've had a # of friends go thru this and none had any "lasting" problems.
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Post by DBinNY on Jan 20, 2009 23:00:37 GMT -5
Jeff, best of luck with your knee and your new barrel.
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