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Joined: Nov 2006
Posts: 3,662 Likes: 1
Campfire Tracker
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Campfire Tracker
Joined: Nov 2006
Posts: 3,662 Likes: 1 |
Twist is easy at 7 or 8.
Having used 3 grooves there is no chance I would go that route again. Just to add I will probably never go Pac-Nor again either
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Joined: Dec 2004
Posts: 10,349 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 10,349 Likes: 1 |
I plan on using a Pac-Nor Lightweight contour barrel to fit a MPI. that is already inlet and fit to that contou,r not much room to go bigger on the contour.
What twist and groove count would you use. 3 groove, 5 groove or Polygonal for use with up to 105 grain bullets?
This will be my first Pac-Nor
Thanks I use a Shilen 8 twist ratchet. If I want a larger bullet I go to a larger cartridge. 80s are large enough for a 6.
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Joined: Nov 2009
Posts: 6,878 Likes: 3
Campfire Tracker
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Campfire Tracker
Joined: Nov 2009
Posts: 6,878 Likes: 3 |
BuchLambert1, I respectfully disagree, 80 gr. is not big enough, my 1x8 twist barrels do very well with 105--107-- 108--110--112 gr. Bullets, and i am not a paper puncher, at least anymore than i need to be. Rio7
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Joined: Jan 2023
Posts: 9
New Member
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New Member
Joined: Jan 2023
Posts: 9 |
"These things matter a great deal more to a competitive benchrest shooter..." So true, BR world works the edges of sanity for a special purpose. And the resulting knowledge sometimes benefit us all.
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Joined: Sep 2008
Posts: 1,171
Campfire Regular
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Campfire Regular
Joined: Sep 2008
Posts: 1,171 |
I’m using a 7.5 twist and it shoots 105 gr hybrids very well.
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Joined: Nov 2022
Posts: 497 Likes: 1
Campfire Member
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Campfire Member
Joined: Nov 2022
Posts: 497 Likes: 1 |
Another 7.5 Bartlein 5R that shoots 105 Hybrids extremely well.
Mine's in a 26" 6MM SLR, so a little more speed over a 6C.
“Might does not make right but it sure makes what is.”
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Joined: Dec 2005
Posts: 2,934 Likes: 1
Campfire Regular
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Campfire Regular
Joined: Dec 2005
Posts: 2,934 Likes: 1 |
7.5 shoots the 115 DTACs well. Can't imagine needing anything tighter.
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Joined: Dec 2002
Posts: 13,107
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2002
Posts: 13,107 |
My two have 7 twist.
One loves 95 grain Tipped MKs, the other, 115 Bergers. Birth shoot 105s fine.
NRA Benefactor Member
Those who live by the sword get shot by those who don't.
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