I want to run one of my Dillon Powder Dispenser on the Rock chucker. I have the Dillon return springs for powder thrower (like the RL450), and I also have the bell crank that doesn't have the safety return linkage. So it works fine on small cases and I can throw powder all day long on the RCBS with the Dillon powder thrower on smaller cases, I.e., 380, or 38 special etc. But I want to run it for 357 cases too. My problem is if I use the Dillon Powder die and Funnel, the die only screws into the Rock chucker a few turns because the The RAM on the RCBS comes up to far with the larger case length of the 357, so you end of over belling and destroying brass. I can still get it to work, but only a few threads are inserted into the RCBS, making it rather wobbly. Does anyone make a 7/8"x14 male to 7/8"x14 female 1" or even 1/2" coupler so I can run larger cases? Similar to these http://store.gun-guides.com/Perfect-Adapters_c_12.html ? My google searches didn't quite work out, I figured this would be an easy item to find and people have done this same very thing. Thanks and great weekend to all.