Grumpa72
Grumpa72
2 posts
Joined June 2017

not chasing primers anymore

Thanks to those who posted about the issues with the 550B tossing spent primers everywhere I investigated the "clam shell doohickey" that opens when the ram comes down and deposits the spent primer in the can. Whoever designed it surely didn't mean to jam (I do mean JAM) the cotter pin into the hinge point. My clam shell wasn't opening at all. I pulled out the cotter pin (someone said "square peg in a round hole?") and put is a round piece of scrap wire. IT WORKS! Now, someone tell the engineers please. ;) I no longer pick up 75% of my spent primers off of the floor, under the tool head or primer slide. Now I really like my 550B whereas before I thought it was ok.
Pampurrs
Pampurrs
42 posts
Joined September 2016

RE: not chasing primers anymore

Most of us have replaced that cotter pin with something rounder and smoother. A Dillon tech once recommend that I use a large safety pin. I opted for a large paper clip, snipping off the excess and slightly bending both ends.

Unfortunately, this fix reduces, but does not completely solve the problem of spent primers bouncing around the loading table. The more common problem is the primers not even making it into the catcher. They freqently go amiss and land on the frame or somewhere on the press and bounce away. I've come to the realization that 2-3 % of my primers won't make it into the catcher.
jforwel
jforwel
36 posts
Joined November 2007

RE: not chasing primers anymore

Let me add a tip here: While reloading last week my primer catch kept staying closed. I adjusted the cotter pin several times and it would work for a bit and then stay closed again requiring me to manually open it with each stroke.

I decided to take it apart, wipe the sides down and go with the safety pin or paper clip method. To my surprise I found a spent primer caught in the little slot at the top of the primer catch. Never had that happen in over 30 years so once that spent primer was removed everything was back to normal. So, check that part and make sure you don't have something stuck in there.
km101101
km101101
1 post
Joined June 2017

RE: not chasing primers anymore

The spent primer chute on my 550 would sometimes not open all the way. I cut a small piece of magnetic tape to fit the side of the chute and placed it on the side, being sure that it would not hit anything. The small amount of weight added makes for sure operation and has eliminated "stray" primers.
lessteinberg
lessteinberg
2 posts
Joined September 2016

RE: not chasing primers anymore

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.