quick n00b question about lube grooves

[gofastman]

I have a LEE 214gr SWC mould that i just got, untill now I have been using TL bullets.

the bullet looks like this, but in a SWC shape:
http://www.fmreloading.com/Merchant2/graphics/00000001/429-240-2rthumb.jpg

Are all three groves supposed to be filled with lube or just the bottom two , and then crimp the top one?:?:

[44man]

Only the bottom 2. The top is the crimp groove.

[geargnasher]

What 44Man said. If you put lube in the crimp groove, it can cause a hydraulic bulge below the mouth when you crimp it, the lube has to go somewhere and the crimp pressure seals the case mouth.

Gear

[ku4hx]

You can successfully tumble lube a traditional lube groove boolit like these too. In which case the entire boolit will be coated in lube. After drying, dust with a tad of Motor Mica to alleviate tackiness.

The ultra think coating is not likely to cause any hydraulic problems.