20 Practical

[Coyotefurharvester]

WB243 I have tested PMC, Lake City, Win brass for my 20p. A .228 bushing wouldn't work, maybe .226. Since I don't sort through brass, I use a .224 bushing, than a mandrel(.201) , this usually gives me a 0.0025 neck interference(tension) for my AR. My fired brass is 0.229-.230, loaded 0.226-.227. Mandrel isn't doing much, could probably skip the step. I back Redding dies off shell holder contact a half turn, start there for sizing. Contact with sh is usually too much bump.

 

[Jim D]

I removed the guts from my RCBS, and Redding 223 dies, sized some LC 13 brass, and neither one will squeeze enough of the case, to hold a .20 cal bullet.

Jim