Mk 248 Mod 1 ever produced with a cannelure?

[Norseman1950]

I'm looking at some 220 SMK pulldowns that appear to have been manufactured with a cannelure. Was any of the MK248 Mod 1 ever produced with a cannelure? I'm assuming it must have some effect on the bullet as to what degree I have no idea. Any insight?

 

[fdkay]

I looked around and didn't see a specification for a cannelure, but they are running that at a minimum of 68,000 psi, 6,000 psi above saami specs, so a cannelure wouldn't surprise me.

 

[LRI]

The genuine Mod 1 ammo I've had in my shop did not have a cannelure. I have the original pubs from Crane and nothing is stated their either. 220 Grain Sierra OTM bullet. No groove.

 

[Norseman1950]

Well I guess I'll give it a try. Thanks for the info.

 

[FatBoy]

It's probably 300BO pull down or blems.