[Dillon 750 problems]

21 hours ago, AHI said:

Just an option. Have used a 550 for over 30 years.  Same primer system. There are primer brass combinations that requires more effort

To seat the primers. This is the reason for the problem. Pay closer attention to how far the upstroke push goes. It really comes down to press

Operation.     Will also add most all current 9mm ammo is crimped primed. This is not the conventional crimp she have seen in the past.

You can not see it but swageing fixes it.

AHI,

Thanks for the info, the R-P cases do feel very different when pushing the handle forward, much tighter and doesn't  seat like the other cases.

I will for sure try swageing some cases for sure and see if that makes the differenct.

Thanks

-Craig

 

[Dillon 750 problems]

On 3/11/2020 at 12:20 PM, Spokewrench said:

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 ? 

 

Spokewrench:

Did you ever find any solution to this?  I have the SAME EXACT issue as you.  9mm, only R-P headstamps on XL-750.  High primers, but just like .001 high, enough to cause lite strikes when used in my shield.

I already have the updated Primer slide.

I spoke with Dillon, Dillion said to adjust the timing, but the primer punch cup lines up perfectly with the shellplate, so I can't see how that is an issue

Checked the height of the primer punch / cup and as per spec it's between 1.380 - 1.390 (Did this like 5 times already)

 

Wondering if you came up with anything.

 

Thanks