Cannelure for the 270?
- Thread starter josmund
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rcmodel
Member in memoriam
Probably.
But maybe not?
Rolling the cannulure 'has' to deform the virgin perfectly formed bullet slightly, and that may effect accuracy to some minor extent.
But there is really no way to tell without testing them in your rifle.
rc
But maybe not?
Rolling the cannulure 'has' to deform the virgin perfectly formed bullet slightly, and that may effect accuracy to some minor extent.
But there is really no way to tell without testing them in your rifle.
rc
oldreloader
Member
^^^^^^^
what he said..RC won't steer ya wrong
what he said..RC won't steer ya wrong
gamestalker
member
I've loaded with a lot of rifle bullets that have a canelure, .270 win. included. But I have never used a crimp on them, and have really not noticed any difference in accuracy.
GS
GS
Elkins45
Member
The cannelure on some bullets is not there just for crimping but also to lock the jacket to the core. Not sure why they would add a cannelure to a bonded bullet for any purpose other than crimping, and most reloaded 270 ammo probably isn't crimped.
As a practical matter, Nosler probably wouldn't sell them if they didn't perform equally well.
Rolling the cannelure certainly does deform the bullet but if the pressure is applied equally around all 360 degrees the the deformation will likely cancel itself out and cause no net change.
As a practical matter, Nosler probably wouldn't sell them if they didn't perform equally well.
Rolling the cannelure certainly does deform the bullet but if the pressure is applied equally around all 360 degrees the the deformation will likely cancel itself out and cause no net change.
DANNY-L
Member
Ignore it and load the same. I don't think you'll see a difference. Just cause it's there doesn't mean ya have to crimp,I wouldn't.
WestKentucky
Member
It's probably there for people to use in 6.8spc ARs. That would keep from pushing the bullet deeper in the case when it goes up the feed ramp. For .270 guns ignore it and move on.
Sunray
Member
Ignore the cannelure altogether and load for the bullet weight. No need for a cannelure in .270 bullets anyway, but the makers put 'em in because some loaders think otherwise.
41 Mag
Member
If your indeed talking about the Nosler bullets having the cannalure, it is usually put there for use in factory loaded rounds in which a lot of them are crimped.
Take the same bullet from a box off the shelf of your LGS and they will be smooth sided.
I have shot up a ton of both in several calibers, those with and without the cannalure looking and weighing the same other than that. They will all drive into small groups using the same loads for that particular rifle.
I have some "Blems" with cannalures in which the manufacturer was not mentioned, but I also have the identical bullet from a listed manufacturer, these all shoot the same as well.
Take the same bullet from a box off the shelf of your LGS and they will be smooth sided.
I have shot up a ton of both in several calibers, those with and without the cannalure looking and weighing the same other than that. They will all drive into small groups using the same loads for that particular rifle.
I have some "Blems" with cannalures in which the manufacturer was not mentioned, but I also have the identical bullet from a listed manufacturer, these all shoot the same as well.
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