Reeder Custom Guns - My continuing fight with the Lyman 450 machine

I know it's been around since the 1880's but it just does not like me. I can get my work done from it but I get goo everywhere and have to sort various issues.

So I have $50 worth of very tight gas checks for these 10mm 200 gr. bullets. I've never figured out how that Lyman gas check seater is supposed to work. Never really messed with it. So I finger align and mash in the sizer. I probably need to sort a method of annealing the checks first off. Then I may use my own method of pushing the checks home without damaging the bullets. I MIGHT even size first in the LEE press then only lube with the Lyman. I thought powder coating but the checks would be murder to get on then. Perhaps .41 checks post powder coating?

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This shaving has plagued me often with many bullets. I have a good nose punch and think I'm being careful. Still I get 4-5% shaving. I don't want to send this to Irv so I'll shoot them. Has anyone seen this or figured the issue to solve it? This was on a cold first run, maybe once it's hot and greasy it will be less prolific.

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but too small to gas seal or really bore ride. Coating adds about 0.003" diameter at minimum, so the checks would be awful to try and apply later. I COULD check, then coat, then size. Taking the place of traditional lubing.

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Larger .41 checks might be applied post coating, then size.

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then run them into the lubri-sizer base first, seating the gas check and lubing them. Sometimes that helps.

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be the best bet. Size on the LEE, then the lubesizer should not be in a bind and likely to shave. I guess I'm trying to do too much work in one pass for the old tool.

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down to .452" I found that nose first through the Lee dies was the way to go without distorting the bullet.

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Sage's sell checks to put on plain base cast bullets with no intended check shank. They are just proper oversized checks to force on the bullet base. BUT they do work. I had aluminum checks and made devastating .45 bullets from 180 - 200 gr. SWC target bullets. Shot them over 1400 fps!

It was a little tricky to make them go ass first and straight, pushing on the smaller area nose, but I got it done.

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I had them for .357, .44 and .45. In the 454 we pushed some plainbase bullets with a plainbase gascheck on them to really crazy velocities. Worked well in rifles also. We just cut them out of beer cans or pop cans and formed them for whatever caliber we needed.

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I screwed a .510 sizer in the press from under with the pusher stuck in the die bore. Then I’m using a .430 “pusher” to mash the bullet into the stop. I tried it both directions. I think upside down may be best.

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Some throw up a little shaved lead from the foot on the shank but I think it’s home and square.

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Lyman sizing dies seem to often have a sharp shoulder somewhere and I get shaving. RCBS sizer dies (interchangeable with Lyman) are much smoother and I get no shaving with them. I've switched to all RCBS sizing dies for my Lyman 450 sizer...

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My continuing fight with the Lyman 450 machine

try PC with no gc

The little foot is bigger than the shank

Try first sizing them nose first through a Lee push-thru die

The checks are really tight. Once on I think that may

When I sized the 300 gr. 45-90 bullet

I used that method for "plain base" checks

Years ago Paco sold plainbase gas check maker ..

I think this will work to seat checks.

Use RCBS sizing dies...