RDA

I did a four day night class and used 9mm ammunition I loaded with VV N320 (around a 125 pf) shot from a stock Glock 19. Multiple instructors asked what I was shooting as there was such little flash.

This is true. My theory is that activating the powder measure by hand is typically a little more gentle compared to operating while running (which I find is faster and the action/vibration while loading may allow a little more powder to settle into the bar). Also, when activating by hand, you really need to set aside (recycle) the first few throws as they tend to be a little bit heavier in my experience (if powder has had time to settle more). I have done that for the same reason, it is easier/faster. But, see my comments above.

Here it is if this is helpful (understood that the answer was already provided): http://www.ebay.com/itm/Automatic-Case-Oiler-Dillon-650-Case-Feeder-Gravity-Oiler-Hornady-RCBS-Lee-/162419449507?

Agreed, depends on the seating stem and bullet profile, I was avoiding being too comprehensive on the topic based on the discussion to this point and speaking to the most common scenario.

Brass from different makers will result in different bullet seating depths due to variance in case wall thickness. Also, there is variance in the case rim area between makers of brass which can contribute to COAL variance. Because the seating stem contacts the ogive. If there is variance in the bullet profile, the seating depth can vary (even though all the bullets may be identical in length). Here is just one of many threads on this topic:

Sure it can. You mean the length of the bullet varies under a thousandth in length when you measure its overall length? That's great, but how well do they measure based on the ogive? Bullet profile consistency is more relevant than consistent bullet length when it comes to COAL consistency (if your concern is simply reducing COAL variance). Ultimately, this fine of variance in pistol cartridges is irrelevant.

What type of brass? Mixed or same headstamp? What type of bullets? How consistent are they? Those things will contribute to more of your variance than your 550 in my opinion.

Same, I use mine regularly and basically do what Intel6 describes above.

Nice, and thanks for the follow-up.

I have two Vibra Primes, they work very well with CCI, Federal, Remington and S&B. Winchester worked but were a tiny bit fussier (but don't use Winchester anymore so it doesn't really matter to me). I never get flipped primers.

Unless you really want to purchase more than one powder, I'd try 8208 XBR first for both bullet weights.

All that matters in the end is you can distribute a proper amount of the lanolin reasonably well onto the cases and the carrier (alcohol) evaporates (whether a 20% solution or a 5% solution).

20% or 20:1 (alcohol:lanolin)? 20% would be some thick case lube. I think I initially tried 12:1 the first time and 15:1 the second mix.

I see we are talking about two different things. I was thinking about the cam follower for the shell plate (picture above)? You appear to be talking about the cam follower for the case shuttle (station #1). I was thinking this thread was in reference to the one pictured above but rereading the original post, I am not certain while one was being asked about originally..

How much play is in this roller cam? This seems contradictory to me, you say the adjustment isn't critical but the position is important for the case's arrival at station one to be in sync?