Very unhappy and a little confused with my recent reload manual...
  Anyone know why they pussyfooted the 10mm and 40s&w down below 30k on the CUP?
  Also some of the recipes seem to be off, HS-6 stands out to me.
  It's too bad, 10mm was the main reason I bought it
   357 mag seems to be normal, up around 40k+. I would have lowered those due to the lack of popular revolver company's and there MIM and lack of QC.
   

I don't have Lyman 50th edition but I do have plenty of data for 10mm...

Check the data here: http://10mm-firearms.com/reloading-10mm-ammo/10mm-load-data-collection/

BTW, some HS-6 loads call for a Magnum Primer for best ignition...See that Speer #12  data on the page.

Thanks, yes I have used your sticky with my new venture with blue dot and 800x
   800x ain't that bad to measure in my Lee Perfect Powder Measure, I can drop around .2 under my desire charge weight and use a dip to get exact weight
   

This is one of there Hs-6 max recipe,,
180gr XTP at 1.250
9.6gr.   Yields 1225fps at 28,700 CUP.
   I don't buy it.
   I don't think I've ever seen Hs-6 hit 1200fps with a 180gr.
   
  I reload all my LPP using Winchester so I guess I'm good no matter what the recipes call for
   I even use mag primers on my 40s&w/hs-6 loads which happens to be my favorite 165gr .40 powder.

I hear ya!  I haven't used HS-6 because none of the data got it up to speed, whereas Longshot and 800X out performed it...
Hodgdon stopped at 9.4 grains of HS-6 1127 fps and 35,800 psi, there is probably some room to go a little higher before it spikes. 
HS-6 is a good powder, a lot of people like HS-6 in 9mm.

Yes, the Lyman 50 has weak data for 10mm and I don't pay any attention to it.  Much of the 10mm data we find must be taken with a grain of salt, as the 10mm is kind of an enigma... There are differences of opinion on why the data is so weak in much of the manuals we see.
The 10mm community has spent a great deal of time and effort to determine what max charges really are in 'their' given guns.

The 10mm is a hot-rod of sorts.  Not everyone owns a hot-rod, and not everyone 'should' own a hot-rod. The risks hot-rodders take are calculated, based on much knowledge and experience, but a risk non the less. The same goes with 10mm in a way.  Taking the 10mm up to max levels requires advanced hand loading skills and a keen sense of observation for signs of pressure, and a willingness to take a calculated risk.
The bottom line is, 10mm shooters, in approaching max level hand loads, must do their own research and experimentation and come up with their own conclusions, based on what purpose they want the 10mm for, and what in reality that purpose truly requires. In other words, knowing when to stop.

Couple of items.

First, nomenclature.  The SAAMI data for 10mm is in PSI, not CUP.  The two are not interchangeable.  I don't have a Lyman 50th manual, but if they have it labeled CUP, that is a problem because either they tested using CUP, but CUP values are not established by SAAMI for 10mm Auto, or they correctly tested using PSI Transducer values, but labeled them CUP which is not interchangeable. My guess is the values in their manual are PSI.

Two, data publishers stop at a given load that seems low for a variety of reasons.  Most often it is because in their tests they began to see erratic results with higher charges.   This can be due to powder sensitivity, pressure variances at extreme temperatures, or other factors.  The end result is their testing did not produce consistent, safe results at powder charges above the load they list.

Quote from: sqlbullet on May 20 2019 11:36:47 AM MDT
Couple of items.

First, nomenclature.  The SAAMI data for 10mm is in PSI, not CUP.  The two are not interchangeable.  I don't have a Lyman 50th manual, but if they have it labeled CUP, that is a problem because either they tested using CUP, but CUP values are not established by SAAMI for 10mm Auto, or they correctly tested using PSI Transducer values, but labeled them CUP which is not interchangeable. My guess is the values in their manual are PSI.

Two, data publishers stop at a given load that seems low for a variety of reasons.  Most often it is because in their tests they began to see erratic results with higher charges.   This can be due to powder sensitivity, pressure variances at extreme temperatures, or other factors.  The end result is their testing did not produce consistent, safe results at powder charges above the load they list.

Great post, as usual.

The second paragraph is an important consideration. Classic example is load data for 800-x. It is kept pretty low -- a ways off SAAMI max. Some guys will claim "lawyers." I have had lengthy discussions with techs at Hodgdon about 800-x in particular and about powders for which they present no data. They explained it just like you did. At the upper extent of the pressure range, they saw results that didn't give consistency over the pressure gear.