TDA

My bench is exactly 39" and I can load comfortably either standing or sitting on a 30" stool. The grip on a 650/strong mount roller handle is 15" above the bench when the handle is up. I'm 6'5".

Sounds like an issue with the follower. With rounds on top of each other in the magazine the top round is sliding on the round below it. The last round needs to slide on the follower in order to feed, so possibly the last round is somehow sticking to the follower. Possibly case lube gumming up the follower upper surface?

Won't happen. It has to be inhaled or ingested.

Exactly, and I prove that to myself regularly, as I did again yesterday. I have a gun that I can't shoot worth a damn at an indoor range with a paper target at 15 yds, but I can go to the outdoor range and put a single smudge in the center of a piece of steel at that same distance as long as I want to stand there and shoot at it.

I change powder bars and it works for me.

Yes I didn't mention that I don't leave my press with cases, primers, or powder in it. Everything is empty when I finish loading, so everything gets charged back up when I need to load again.

I drop the primers into the magazine tube, then cycle the press six times, then switch on the case feeder. Once it starts dropping cases, start loading and the first case will be primed. I usually take advantage of those six cycles to drop powder into a case and double check the charge weight, and to get the powder settled in the hopper for consistent throws.

That looks to be exactly what it is...

Yes, I've loaded thousands. Are you using a Lee FCD?

Are sure it isn't the powder funnel/expander sticking in the case? As far as crimp, all that is "needed" is to remove the belling from the case mouth.

If you spend enough time at a public range, sooner or later, you'll see everything! I'm constantly amazed at just how forgiving firearms can actualy be...

Start with velocity. Chrono some Blazer and then chrono some of your hand loads. I'll bet your hand loads are slower.

My local Bass Pro has had Clay's in stock for a while now...at Bass Pro price though!

It would vary from one gun to another for a number of reasons. The best way to find out would be to chrono it using your gun.

That's where we are!

If that was true, there would be no reason to ever test ammo or guns past 10 yds.

Is your shell plate too loose?

Check to see if the knurled not on top of the primer tube is too tight. Just turn it to where it makes contact, don't tighten it. Tightening it can deform the plastic tip on the magazine tube and cause primer feeding issues. The Tula's are probably slightly different in size then the Federals were.

That's my experience as well with using thousands, but I am also due to place another order... I phoned them a while back with a question, left a message, and never got a return phone call. I wasn't too impressed with that though.

Are your cases swimming in case lube when you load them? Are you seeing un-burnt powder anywhere after "firing" one of these?

Did you give up and send it back to Dillon? Having two of them, I can't imagine anything on a SDB that could be that perplexing.

"Hi" drops cases faster than "Low". If you are outrunning the case feeder with it on "Low", switch it to "Hi" !

I bought an SDB on eBay that was basically new in the box for $250.00. When I got it set up it worked for a short while and then stopped indexing. Pretty sure I know why it was sold... I tinkered with it and found that the screw that holds the indexing pawl in place had backed uot and the pawl was no longer contacting the shell plate to index it. I removed the ram, cleaned the screw and instaled it with a drop of Loctite on it and it's been running perfectly ever since. For some reason I am not able to post pics with this new software or I'd post a pic of what I am referring to.

I believe I'd start by examining the ammo to see what area of the cartridge is contacting the case gauge. Too much bell, over crimped, bullets seated crooked, "Glocked" cases, etc.

Add a set of dial calipers and a powder scale.