Which lube groove?

[wallenba]

I'm gonna opt for lubing just one groove of my Lyman 45 200 SWC to cut back on smoke indoors. Which groove should get the lube, or does it even make a difference?:-?

[35remington]

Bottom.

[fredj338]

Wehn I do that for a low vel load w/ a bullet that has two grooves, always the bottom. It is closest to the hot gases.

[wallenba]

Good deal, it makes it easier in the bottom too. Thanks guys.