Dillon XL 650/750 Spent Primer Catch Upgrade Installation Instructions.

Please read through all of the steps before beginning.

Images shown are of the X650 but installation is the same for the XL750

To Start you will be removing the Stock Spent Primer Cup Bracket from the platform. Using a 3/32 Allen Wrench remove the two screws that hold the stock metal Spent Primer Cup Bracket to the platform. This is easier done with the platform in the raised/handle down position.

Next you will be installing the new bracket and funnel using the new screws. Install the new Bracket and Funnel in the position shown above. The round end of the triangle bracket should face forward with the White Arrow on the left side, facing up, and pointing toward the front of the press. (If you put this on backwards it will hit the bullet chute and may break. the bracket) Start one screw in the left hole first but do not tighten it until you get the second screw started. This will help to align them without cross threading either of them. Once you have both screws started and the bracket in the correct position finish tightening both screws.

This is how the new bracket and funnel should look when mounted correctly.

Next the new Spent Primer Cup Lid will be mounted to your right side Strong Mount in the area shown above.

The Cup location shown here is for the XL650/XL750 Tall Strong Mount which measures 8 ½" high. Dillon now has a Short Strong Mount which is only 6" High. If you have the 6" Short Mount you will need to determine the proper location of the cup for your mount, select a location similar to what is shown above making sure to leave enough room to unscrew the spring primer cup. The hose length included is the correct length for the 8 1/2" mount only, you will probably need to trim the hose to the correct length dependant to the location you have chosen. Trim the hose only after you have mounted your Cup.

Tape the Template to your Strong Mount, aligning the two bottom marks in line and centered with the lower left hole of your Strong Mount. The black dot on the template should align with the hole in the strong mount. You can use a flashlight shining from the back side to help you align the dot to the hole.

Again, the alignment shown above is for the duel use XL650/XL750 (8 ½ inches high) Mount only. If you have the lower 6" strong mount the holes already in your strong mount are in different positions so the placement of your temple may need to be modified.

Once you have determined the correct location of your template using a hammer and a punch, center punch each of the 2 marks on the Template.

To keep the a larger Drill Bit from walking while drilling, I like to start the holes with a smaller drill bit such as a 1/16" bit, the smaller bit should stay centered better in the punch mark you just made.

Next enlarge the 2 holes using a 13/64 Bit (5mm is closest for you metric guys). You can touch up these holes with a little paint if you want. I just spray a little spray paint on a plastic bag until it puddles and then use a Q-tip as a brush to apply paint to the holes, this will keep them from rusting.

Next you will be installing the lid of the New Spent Primer Cup with the supplied screws. The screw insert fromt the back side of the Strong Mount and thread into nuts in the new Lid.

This is how the new Spent Primer Cup and lid should look once mounted in the correct location. It will be low on the strong mount but have just enough room to remove the cup to empty out the spent primers.

The last step is for the free end of the Hose to be installed on the end of the Funnel but BEFORE you connect it read the next step as it is very important.

The only problems a few people have had with this upgrade was from them not following the next step.

For everything to function correctly when the hanlde/press is cycled you are going to need to put a bit of a twist in the Hose before installing it on the Funnel. To form the twist, turn the hose at least 180 degrees in a clockwise direction before installing it on the top fitting. This twist will keep the Hose from kinking as the platform is lowered, instead the Hose should form a coil as shown in (Pic.1) and as the platform is raised the hose will stretch out to be almost straight allowing the primers to fall into the New Spent Primer Cup. (Pic. 2) If the hose hits the handle that is ok but if it hits the bin it my dislodge it, so if ithat happens readjust the twist in the hose so it coils forward.

Enjoy, you should now never have to pick spent primers off the bench or floor again. If you have any questions, comments, or problems please contact me at stevethone@comcast.net

© Steve Thone 2026

XL650
XL750