Underwood 180gr Speer TMJ Pull-Down

[The_Shadow]

Harry it is possible, when I do the pull-downs, I resize the casing without depriming, this allows for the case mouth to be smaller, then run the expander inside for uniformity and just allow the bullet to start.  That way the bullet won't snag as I reseat and keeps bullet tension is tight.  I still seat to depth with out adding any crimp, once seated then I taper crimp to finish.  You could try to just seat them deeper, but more than likely the bullet will buckle the case mouth because they are already crimped.

You could possibly ask Underwood to seat to a working COL of your specifications...   Kevin may accommodate your request!

DT has been seating to 1.2450" -1.2470" for the most part.
UW has been seting to 1.2500" -1.2520" average.

[harrygunner]

Thanks. I'm taking notes from your post.   
   
I have a business acquaintance who invited me to his ranch to show me how to hand-load. I'm going to accept his offer.
   
I'm thinking I want rounds made with TLC. I bought two thousand rounds of DT between 2005 and 2006, back when he seemed to care. Those performed as spec'ed on the label and feed perfectly. But I don't trust his new stuff. And Buffalo Bore will send you rounds made from whatever they can find.
   
I appreciate Underwood, but his QC is still evolving. Hand-loading could be fun.

[The_Shadow]

Handloading does take time and you need to take the time to insure your own quality controls.  I find it to be a rewarding and relaxing as I get into my own world and zone in on the steps.  Even though I have a Dillon 550B, I still use my single stage press the most.  If you have the time, you just might find it very rewarding as well.

I cut my teeth doing 44 magnums, then 38/357 and some rifle cartridges.  10mm has added extra steps, to insure the cartridges I produce will feed reliably.  I use mostly pre-fired brass, so inspections at every step help to weed out or correct any issues.  That being said, the "Pass-Thru" sizing / reconditioning has been a very positive addition, with regards to better feeding and function cartridges.  I use the LEE FCD and a bullet push pin from a cast bullet sizing kit because I had it on hand.

I use the 10mm FCD for "Pass-Thru" sizing of 10mm, 40S&W, 357Sig & 9x25Dillon because of the results I achieve in reconditioning them.  I like it so much, I am doing my 45ACP brass also in it's own FCD with great results.

The handloading aspect takes you to another dimension with regards to appreciating your shooting entertainment and needs!  It's going to be tough to get going due to the current lack of supplies, therefore I wish you luck gathering your stuff up.