Cannalured Groove vs. none

[getitdone1]

I may not have spelled cannalured right but you know what I mean. The groove they often put around a bullet. You crimp the mouth of the case into it.

Reason for this post. I see Hornady offers a 110 gr, .277 bullet with AND without this groove. I'm guessing for top accuracy the one without the cannalure would be a little better.

Of course this applies to all calibers and be good to know which type of bullet is the most accurate.

Would the non-cannalured bullet shoot a little faster due to the case mouth fitting more tightly, to the bullet? Assuming a good, tight crimp on both types. I believe the main reason for the cannalure is to help keep the bullet from being pushed down into the case under recoil so it might really only be needed for he hard kickers.

Don McCullough

[El Chivo]

I seem to have better accuracy with those copper-plated bullets that don't have cannelures vs the lead ones that do. However, I like crimping to a groove; it gives me a consistent OAL and must be better for a tubular mag.

I think it's time for you to order both and do tests at 200 yards, and report back.

You're shooting .277, is that for a bolt rifle?

[firefuzz]

I think the bullet is offer both ways to accomadate shooters both the .270 and the 6.8 SPC, the latter would require a cannular in auto rifles.

Rob

[J Miller]

For tubular magazines or military duplication ammo I crimp in the crimp grove.
For bolt action sporting rifles I don't crimp at all. Crimp grove or not.

Joe

[Griff]

I don't crimp on non-cannelure bullets. I may use a very light taper crimp on my 7mm magnum to eliminate any bullet jump for rounds in the magazine.. Otherwise I rely on neck tension with this type bullet.

[.45]

I do the same as Griff and have had no problems at all.