Given that lube doesn't actually do anything on the outside of the lube grooves but get smeared on the inside of the case, relubing them after sizing is redundant unless the lube grooves aren't sufficiently filled.
That is how I've been doing it for over 2 years and it works fine and I like it. I do not find any evidence that any of it scrapes off while seating the boolit.
Please seat a few after double lubing and remove them with a kinetic puller. That ring on the inside of the case where the bullet stops ? Thats your second coat of lube.
Once the rifling engages the bullet, the reservoir of lubricant inside the lube grooves is actually put to use- both in coating the rifling (lands) itself- and being forced out into the grooves in the bore.
In the case of LLA- the sticky , goupy , soupy lube job that we frequently see is an attempt to make lube do something it cant do : Lube the bullet from tip to tail, and stay intact once the bullet is seated. Simply put, its a fallacy. At best, its a waste of lube.
Unless the presence of lube on the parts of the bullet that make no contact with the barrel makes you sleep better at night ( the ogive, and the base of bevel base cast bullets ) re-lubing after sizing serves very little actual purpose.
If you are using LLA straight from the bottle and having problems getting it into the lube grooves evenly and sufficiently- try cutting the LLA with mineral spirits by about 50%. This all but ensures a suffient coating during a casual tumble lubing, and is more than sufficient in almost any application I've encountered.
say you can lube only once, before sizing, not after.
Thats what mine say, too.
I just got a bunch of .45 ACP pills, 200 grain SWCs and 230 grain LRNs. The SWCs are this Lee type:
http://i19.photobucket.com/albums/b1...oading/swc.jpg
Thats about the most even, well applied coat of LLA I've ever seen.
The amount of lube required for it to do its job in your bore is often greatly exaggerated.
There is no such thing as a stupid question- the exception being one you already know the answer to.
When all else fails, consult your caster