Remington Core-Lokt 180g RN

[Vacek]

I pulled several hundred 3006 rounds that I purchased from an estate sale. I now am the proud owner of a bunch of 180 grain Remington Core-lokt Round Nose. Per a previous tread I am going to load them up in some prepared 308 Lake City brass for my plinking practice loads.

One set of reloading data infers to use 42 g of Varget for 180 grain bullets (Hodgdon reload data for Varget) so I have subtracted 10% and will measure out 38 grains. Now my question is, if I seat the bullet to the cannular the bullet is seated well beneath the neck of the case and measures around 1.60 wherein the suggest max COL for 308 is 1.801. So What would be a suggested COL for this load?

 

[Sunray]

"...42 g of Varget for 180 grain bullets..." Hi. The Varget starting load for a 180 is 41.0. 42.0 is close enough. However, the OAL is 2.800". You can forget the cannelure altogether.

 

[FROGO207]

That is correct. The cannelure is there for use when crimping the bullet in the 30-30. With the 308 there is no need to crimp your bullet if the neck tension is holding that bullet from moving. The OAL for that particular weight bullet is most likely for a different shape, giving you a different volume for the propellant under the bullet and the 10% starting is to work up to the correct load with your bullet at the published seated OAL. When safely arriving at the best load for your firearm then you can try moving the OAL in or out slightly to see if it helps accuracy. Most times the OAL is in the load data it is the MAX that SAMMI calls for and will be noted as such therein. Ain't reloading fun.