.264 Win. Mag. Twist

L

Left Hand Dave

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I have been collecting parts for a .264 Win Mag and have ask for information on the build before. I am moving toward ordering a barrel. That barrel ill either be a 1-7.5, 1-7 or a gain twist in 1 in 8 to 1 in 7. My questions are if I go straight 1-7 twist am I going to have problems with damaging cup and core bullets? Also the reason for the 1-7 is of course 150 - 160 grain bullets but if I want to shoot a 130 or 140 is the 1-7 going to cause issues?

Thanks for any help you can give me
Dave
 
I put together a 1-7.5 twist with krieger 4 groove built on a ruger m77 for my father. It sends 147 eld-m's at 3240 fps and never had a single issue so far, around 100 rounds now. I'm about to do a load work up with 140 Berger Elite Hunters until the 156 Berger (the bullet we built this rifle for) comes out. I don't anticipate any problems.
20180529_150504.jpg
 
codyadams said:
I put together a 1-7.5 twist with krieger 4 groove built on a ruger m77 for my father. It sends 147 eld-m's at 3240 fps and never had a single issue so far, around 100 rounds now. I'm about to do a load work up with 140 Berger Elite Hunters until the 156 Berger (the bullet we built this rifle for) comes out. I don't anticipate any problems.View attachment 131358
Click to expand...

Will the 1-7.5 be fast enough for the 156 Bergers at sea level?

Dave
 
codyadams said:
Don't really know/care, I live at 6600 ft elevation and most of my hunting is 8000 ft+. I highly doubt I'll need more.

If I lived at sea level however, I would go with a 7 twist just to be safe.
Click to expand...
One more question what length barrel did you use for your father's m77?
 
Left Hand Dave said:
I have been collecting parts for a .264 Win Mag and have ask for information on the build before. I am moving toward ordering a barrel. That barrel ill either be a 1-7.5, 1-7 or a gain twist in 1 in 8 to 1 in 7. My questions are if I go straight 1-7 twist am I going to have problems with damaging cup and core bullets? Also the reason for the 1-7 is of course 150 - 160 grain bullets but if I want to shoot a 130 or 140 is the 1-7 going to cause issues?

Thanks for any help you can give me
Dave
Click to expand...

Dave, I too am building a .264 WM with Savage 111F LA and went 1:7" 26" 5R Sendero contour prefit barrel from X-caliber but have not put it all together yet. I will be starting with140s and eventually heavier. Like codyadams, I too do expect any problems. Which 160 are you planning on using?

.264 WM Savage 111F LA.jpg


Ed
 
Last edited:
Cody, thanks for the information.

Feenix, I was looking at the 160 Matrix if they get the import issues straightened out. It looks like it will work with less twist than the Berger but I would also like to try the heavier Mono bullets like the 137 Hamer's. They take a 1-7 twist. I know you can't have the ideal set up for everything from 130s to heavy mono bullets but I would like to be able to shoot the fast twist without giving up the 130 or 140 class cup and core bullets. I also want to be ready for the future when I think we will see lead bullets no longer legal. I think I am either going to go with a straight 1-7 or a 1 in 8 to 1 in 7 gain twist. From what I have seen here I think I will be ok.

Dave
 
FEENIX said:
Dave, I too am building a .264 WM with Savage 111F LA and went 1:7" 26" 5R Sendero contour prefit barrel from X-caliber but have not put t all together yet. I will be starting with140s and eventually heavier. Like codyadams, I too do expect any problems. Which 160 are you planning on using?

View attachment 131448

Ed
Click to expand...
Hey Ed, I've got plenty of extra barrel nuts if you need one brother, lol.:):)
Let us know how it turns out.
 
Left Hand Dave said:
Cody, thanks for the information.

Feenix, I was looking at the 160 Matrix if they get the import issues straightened out. It looks like it will work with less twist than the Berger but I would also like to try the heavier Mono bullets like the 137 Hamer's. They take a 1-7 twist. I know you can't have the ideal set up for everything from 130s to heavy mono bullets but I would like to be able to shoot the fast twist without giving up the 130 or 140 class cup and core bullets. I also want to be ready for the future when I think we will see lead bullets no longer legal. I think I am either going to go with a straight 1-7 or a 1 in 8 to 1 in 7 gain twist. From what I have seen here I think I will be ok.

Dave
Click to expand...

+1 on Matrix 's issue. Sounds like a good plan to me.
 
Last edited:
With the 264 Win mag you need at a minim a 26" barrel. I did not have my rifle built but got it in a real deal, long story. It has a 9" twist Shilen I think it is a #4 barrel 27 3/4" long. This is as long as the smith could get out of a 28" blank. I shoot 130 Accubonds at 3350 fps with Retumbo. It is a real deer smoking bean field rifle.
 
You need to cut at least 1 inch off the muzzle end of a blank. Some companies tell you to cut off 2. When lapping the muzzle can get a flair and airguages don't work well on the last inch. Your Smith should know this.
Shep
 
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