FMJ and LRN down the same barrel

[Riverpigusmc]

Originally Posted by Gatorade

Jim, my load is 228gr wheel weights, quenched in a bucket of water, mixed head stamp brass with Remington Large Pistol primer. 5.0 grains of Bullseye. I use liquid alox tumble lube and size to .451.

I was having some issues with my first few batches of reloads because the crimp die was crimping before the bullet was set all the way and it was building up lead around the top rim of the case. With the build up the bullets wouldn't go fully into battery. I learned about the plunk test with the barrel. I still have a couple rounds that were a little tight but the Lee Alox is sticky stuff sometimes.

When I tried using just the bullets as they came out the bullet mold (Lee 452-228-1R) were too big and budged the brass.

Tomorrow is range day so I will update then.

I changed to seat and crimping in separate steps for that very problem. I use a Lee factory crimp die to crimp

[Gatorade]

Originally Posted by Riverpigusmc

I changed to seat and crimping in separate steps for that very problem. I use a Lee factory crimp die to crimp

I have one of those that came with my 300BLK dies from Lee but I wasn't able to get it adjusted right. The first few didn't crimp enough but when I adjusted it down it wrinkled the shoulder of the brass. Like it crimped and still pushed down on the bullet or the neck of the brass. Infuriated me because Blackout brass i.e. Expensive or time consuming to produce. I am not that happy with Lee dies and my last three caliber so have been Hornady New Dimension dies. Around $40 on sale and 100 free bullets which I usually get the .308. Factor $6 for shipping and you still get $14 worth of bullets. So the dies end up being $26 and are much better quality than Lee.

I am going to reload a batch of BLK soon so I will watch what I am doing with that factory crimp die.

[DrHenley]

Originally Posted by Gatorade

I have one of those that came with my 300BLK dies from Lee but I wasn't able to get it adjusted right.

According to Midway, the 300 Blackout FCD is a collet type rifle die.

The rifle FCD is a whole different animal than the pistol FCD. The pistol FCD is a taper crimp die with a "post sizing ring" that insures the loaded case is within specs.


I have rifle FCDs in many different calibers, and it is about the most idiot-proof die ever made. If it is dimensioned correctly and working correctly it is impossible to crush a case, or even to over-crimp, because the shellholder should be pushing on the collet, not on the case. Once the fingers on the collet close, that's as far as you can push the collet into the body.

Take a shell holder, a case, and the FCD and try this:. Put the case in the shellholder and insert the case all the way in the FCD by hand. Does the shellholder contact the collet, or is there brass visible between the shellholder and the collet?