Spokewrench

Well , put new slide assembly in ( noticed on new one the primer pin is black not gold) and was still getting occasional high primers , called Dillon and they were very pleasant and walked me through all the procedures and I still had same issues, so Dillon suggested to identify the headstamps that we’re giving problems and sure enough it was only the R-P headstamps but only occasionally... They measure the same as the rest of the brass except the diameter of the neck is consistently.003 to .005 smaller .. any ideas ?

Quick update ... I received the replacement parts from Dillon , Wow , that was quick ! AWSOME customer service ! Will post results on Monday..

LewMed , I have been sitting using the 750 and was getting about 5% high like you , I will try standing and see if that helps .... Yes , the Loadmaster took years to get right and then need fixing again here and there .. hoping that the 750 will stay good after fixed , it looks to be much better built and is much smoother... waiting on a new primer slide assembly from Dillon and will try your technique of standing ... Thanks for the advice

Small pin ... I kinda thought it was going to run great out of the box but I had to make a lot of adjustments to make it work ....

After a good nights rest, I took another look at this high primer problem. I noticed the Dillon primer pin was a lot larger in diameter than the one on my loadmaster and the Dillon pin would only slightly enter the primer pocket of a 9 mm , while the Lee pin went in with room to spare . I took the Dillon pin to my drill press and used 220 grit paper to polish the pin until it would go into the pocket and then progressively used 400, 600 and 1500 to polish it I also slightly broke the edge from to to side. I think it was 171 thousandths when done. It now will enter the case completely and smoothly. I have about 150 rounds with no high primers now . I think Dillon makes it this way to eliminate crushed primers and the liability associated with that but it did not function well for me .....

Bought a 750 and so far not impressed, oal about the same as my loadmaster and getting high primers which Dillon has no answer for, at least the loadmaster had adjustable primer depth also having occasional missed primers and the new roller for the indexer is binding ( just a brass roller , not a roller bearing) they are good about sending new parts but I am wishing I had sent this back within the 30 day return period and stuck with my loadmaster and occasionally getting crushed flipped primers for what this Dillon cost ... I have tried tightening the shellplate adjusting the wire spring that holds the case in place , making sure to push all the way forward on the handle and still getting occasional primers .005 high and then take them to my rcbs single stage and reset them easily ...