how to: 30-378 to 338-378????

[lovdasnow]

ok, i think i already know the answer, but just wanted to make sure because i know how expensive this brass is.

I've got 345 pieces of 30-378 weatherby brass, and am building a 338-378. I was going to start resizing and necking up brass, but wanted to double check here before i got going.

in regards to necking up: all i have to do is screw in the 338-378 dies, and run the 30-378 brass through them right? what's the best way to lube the inside of the case neck?

thanks guys

 

[trueblue]

I use Imperial wax to neck up. Also, I use a Sinclair mandrel with the 338 expander.

 

[lovdasnow]

i didn't have any imperial wax, so i just lubed the cases and used a qtip to lube the inside of the neck before i ran them through the redding dies.

i did 6 cases and they all looked good and didn't have any problems. is the 338 expander necessary, or is that the same thing as just running them through the 338 die?

 

[trueblue]

I went with the expander after I bent the stem trying to do it with the die.

 

[lovdasnow]

i did about 60 pieces that look good, and ruined about 6-7. so maybe 10% screw up rate.

die seems to be holding up well though.