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That's another way to put it. ;)

My solution (when doing my brass that doesn't really get dirty going from extraction to cartridge case): Anneal first, just after decapping. Clean outside of neck with steel wool FL size without an expander ball using Imperial Sizing Die Wax (die is reamed to minimize amount of movement)...

I have two small rifle primer pocket tools that I use. One is a RCBS Primer Pocket Uniformer and it's diameter measures .1725". The other is a 21st Century uniformer and it measures .1710". I use the RCBS on most other brass (e.g. Lapua and Peterson). For my Alpha brass I use the 21st...

Excellent post, IMHO. In terms of velocity, I really focus on SD's to tell me how well I'm doing with my reloading. In terms of what I get on paper, Mean Radius tells me how well everything is perform together (shooter, gun and ammo). ES doesn't say much where I can have a single POI far...

With that load, using 116 gr H2O the case fill is at 97.6%; plenty of room for more powder and with an adjustment for powder burn, I don't see any real issue. . . .??? 🤷‍♂️ Adjusting burn rate and not temperature to get your velocity of 2888 fps:

Just trying to understand. . . so, when you adjust Case Capacity to 116 gr H2O, the program is saying your load is 104% "Filled"? PS: how many grs of what powder?

It largely depends on the particular brass you're using. The good news is, you can change QL case volume accordingly, like for you it's 116 from the 108 default number.

Yeah . . . a Prometheus does really well! ;)

Yes.

The best I could do with my beam scale is get SD consistently in the mid teens. For me, that's not good enough. I mean, I tried everything from having it tuned and making sure there wasn't variation and making sure I didn't have any parallax issue (using a video camera set up). I was after...

BTW: I should have mentioned that for that CBTO measurement the comparator insert I use is a Sinclair, not a Hornady (big difference, like my Hornady insert measures .050 shorter). :eek:

Hmmm??? I see . . . you want to get a kick out of it. ;) My factory CBTO for 168 gr Federal Premium match cartridges was 2.147.

I've got the FA Perfect Seat set (see pic below) and it works just fine, but not as consistent as my 21st Century hand primer, and . . . it's not as easy on my old hand as the 21st Century. The leverage on the 21st Century is such that it's really easy on the hands when doing a lot of priming...

What some people suggest is putting a rubber o-ring between the locking ring and the press with not too much tightening to let the die have some amount of float so that the die has some self centering. I'm not a fan of this idea as it seems to me it would lead to inconsistent shoulder bumping...

Yes. That's a pretty low MV, even for a 140 gr pill. You should be able to easily get 2650 fps out of your 24" barrel with 37 grs of Shooters World Precision.. But, I must say, I don't think is really a very good powder for a 6.5CM. I say that because it doesn't fill the case well before...

I always like to start at .010" off, or if using a mag, then maximum that'll fit the mag.

Though you didn't ask me. . . In my 26" barrel, my 169 SMK's do real well with a velocity just above 2,700 fps (like 2701 to 2715 fps); that is with 41.1 gr AR-Comp and seated to a COAL at 2.931". :)

I've seen this before and it had to do with how the sizing die was set up causing pressure to push down on the neck and shoulder to cause that kind of budge at that junction. It could be something in the die, like the expander ball not being adjusted properly or something catching a little on...

^^^^^ this one ^^^^^

I've got nothing much to add with what's already been suggested. However, keep in mind that brass fired in another gun can have this kind of issue as sizing brass that's fired in another gun with larger chamber can be difficult to get sized properly for your own gun. I only bring this up as...