May have solved Loadmaster case-feeding issue


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FieroCDSP
November 21, 2007, 11:45 AM
Hi, folks. Everyone knows the LM's are finicky in every aspect, unless everything is just right. Some people have no luck with them, others have nothing but, and they're the best presses they've ever owned.

I fall in between. Sometimes it works great, other times it's a pain.

Recently I tried something to fix the 40S&W case tipping issue. It seems like the feeding case gets hung up on the rim of the next one in the feeder, causing it to tip. It only seemed to do it on mine when there were more than X-number of cases in the tube.
Figuring that it's a matter of the cases not shearing apart from one-another right, I drilled out my 9mm case feeder (with the metal bushing) to barely fit a 40. After a bit of testing, I found that the problem was helped some, but not entirely fixed. The operation of the 9mm cases is not affected, BTW.
So, we have the same feeder, and it hangs up on 40cal, but not 9mm.

This brings us to what many have theorized, it's the lack of taper in the 40 that causes it to catch. Or more specificly, the fact that a chamfered 40cal case is slightly wider at the mouth than the rim of the next case.

While fussing over my latest jams and crushed primers, I noticed something on the plastic primer feeder. It was catching a bit on the sliding portion, likely flipping the primer and causing it to be crushed sideways.
With a little work with an exacto knife, I managed to smooth it out. Which got me thinking to the case feeder. I looked it over and there was a mold-hump on the curved face of the feeding slide. It was pronounced enough that it could have been pushing the bottom of the case forward before the top was pushed by the non-bulged part.

I used an exacto (I probably could have used a Dremel sander) and carefully removed the buldge from the feeder face. I reasembled, filled the tubes full and cranked out a hundred rounds with no tipped cases.

I am not entirely sure if this was the actual cause, as I had to use cases that had not been chamfered, so they might not have been sticking on the rims to begin with. But the combination of the feeder fix, and the slider fix, might be what fixed it, and if so, I'll be happy.

Check your case-feeder slider for that flaw, and if it's there, remove it. It might fix things with your feeding problems, and it certainly won't hurt.

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Lazuris
November 22, 2007, 02:34 PM
While fussing over my latest jams and crushed primers

Try hand priming. Lee makes a hand priming tool thats easy to use and seats the primers better than your press would. Also its safer IMO since it removes the prming sequence from the charging.


And as a cool side benifit. After a few thousand rounds your have ripped forearms :p

Walkalong
November 22, 2007, 03:05 PM
My Projector was the same way. It was great, except when it was being a pain. the 2nd and 3rd generation shellplates made a huge difference.

Lazuris's suggestion of hand priming is a good one. I use an RCBS hand primer for everything prior to loading. It makes it much easier for a progressive of any kind to run smoothly.

Werewolf
November 22, 2007, 03:27 PM
It was pronounced enough that it could have been pushing the bottom of the case forward before the top was pushed by the non-bulged part.

I used an exacto (I probably could have used a Dremel sander) and carefully removed the buldge from the feeder face. I reasembled, filled the tubes full and cranked out a hundred rounds with no tipped cases.Prime evidence of PP QC on Lee's part. As much as I like my Lee Turret - it was obvious from the first day that I owned it that their QC isn't the greatest in the world.

FieroCDSP
November 22, 2007, 08:08 PM
I usually do hand-prime and then hit the LM. Lately, I just want the thing to work so my expenditure is justified. I think I may have fixed it, but It'll be at least one more range session before I know, as my cartridge bins are full. I bought Lee for the price, and knew there would likely be a few tweaks needed. I just wante dto put my story out in case someone else having that problem could use the info.

Isn't that what we're all here for... Sharing info and long-winded stories? :D

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