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I've been setting up my Hornady LnL progressive press to batch process 5.56 and 7.62 brass using a combination of Randall's sticky threads above as well as Raymond's videos. First let me thank those two as well as everybody else here that patiently answered my questions while planning my needs and getting everything together.
I put an RCBS lube die in station 1 to deprime and lube, Dillion Rapid Trim in station 3 to both resize and trim, and a Lyman M die in station 5 to knock off trim burrs in the neck while slightly flaring the neck to allow seating the bullet
One problem I was having during my initial testing and setup is occasionally the 5.56 brass would tilt slightly while entering the M die and the M die flaring stem would catch the edge of the brass and damage it. This was frustrating and would really slow down the process. Here's how I fixed it...
The M die hole is 9/16" across, and provides no support to center the brass.
I had a machinist friend on my ship make a couple bushings out of a Delrin type plastic I had scored to take up the difference between the brass and die body with about 1/10" larger inner diameter then the brass. Delrin is harder then teflon, but still soft enough to allow the brass to slide against it without damage to either. Enough to roughly center the brass and allow the flaring stem to do it's job without damage to the brass.
The bushings slide into the die with a slight interference fit to keep them in place. Right now they have a slight flange, but if that prevents proper operation of the die then I'll remove that and leave the bushing smooth with the die base.
Looks like this'll work perfect. The brass is nicely centered in the die, allowing the neck to properly hit the stem inside. I haven't tried to do 7.62 brass yet after my initial trouble with the 5.56, but went ahead and made a bushing anyway while I had guy, lathe, and material handy.
I've not seen anybody else with mention this prob, but if you have it, I hope this helps.
I put an RCBS lube die in station 1 to deprime and lube, Dillion Rapid Trim in station 3 to both resize and trim, and a Lyman M die in station 5 to knock off trim burrs in the neck while slightly flaring the neck to allow seating the bullet
One problem I was having during my initial testing and setup is occasionally the 5.56 brass would tilt slightly while entering the M die and the M die flaring stem would catch the edge of the brass and damage it. This was frustrating and would really slow down the process. Here's how I fixed it...
The M die hole is 9/16" across, and provides no support to center the brass.
I had a machinist friend on my ship make a couple bushings out of a Delrin type plastic I had scored to take up the difference between the brass and die body with about 1/10" larger inner diameter then the brass. Delrin is harder then teflon, but still soft enough to allow the brass to slide against it without damage to either. Enough to roughly center the brass and allow the flaring stem to do it's job without damage to the brass.
The bushings slide into the die with a slight interference fit to keep them in place. Right now they have a slight flange, but if that prevents proper operation of the die then I'll remove that and leave the bushing smooth with the die base.
Looks like this'll work perfect. The brass is nicely centered in the die, allowing the neck to properly hit the stem inside. I haven't tried to do 7.62 brass yet after my initial trouble with the 5.56, but went ahead and made a bushing anyway while I had guy, lathe, and material handy.
I've not seen anybody else with mention this prob, but if you have it, I hope this helps.
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