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Spent primers escaping

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Pull the toolhead out of the frame, and look down through the hole in the platform where spent primers go. Does the chute completely travel past this, or is an edge visible? There is some play in the bolt holes on the casting, you might need to tap this part to the left so that primers don't hit the edge of the chute.

I agree with replacement of the cotter pin as solving part of the problem. Affixing a washer or small magnet to the back of the chute also helps it open reliably each time. Lately, however, and by accident, I have 99% solved the spent primer problem that misses the cup. For reasons related to bulging 38 Super brass, it was suggested by a friend that I obtain a Lee Undersized Sizing die. I did that and it solved my bulging cartridge problem. I also noticed that no spent primers were being spit out on the floor or bench. Wasn't sure if that problem was as prevalent on 38 Super as it was 9mm and other calibers, but it didn't hurt to try. I replaced my 9mm sizing die with the regular Lee sizing, de-priming die and lo and behold, I maybe lose 2-3 out of 100 or less. It would appear to me that the fixed decapping pin, as opposed to the Dillon spring loaded pin is the difference. It's an inexpensive fix for under $25 at Midway or Amazon.

I use a piece of blue painter tape....taped to the inside rear of the catch cup and up into the right link arm. Some times a primer will miss the cup and go between the cup and link arm.....I have maybe one or two every 500 now that don't make the cup.

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