bigedp51 said:
krprice84
Questions:
1. When you full length resized your cases the first time did you use a standard FL die or a bushing die?
2. When you did the first FL length resizing was your shell holder making hard contact with the die meaning press cam over?
3. And when full length resizing did you pause at the top of the ram stroke for 4 to 5 seconds to help lesson the brass spring back?
4. Are your Canadian Military IVI cases known for being top quality brass or is it just average brass and all you could get your hands on at this time.
FYI CatShooter made the comment that our American military Lake City cases are the top of the line "BUT" Federal loads Lake City cases that failed military quality control standards and sometimes they leave a lot to be desired when it comes to uniformity.
BigEd,
1. Standard full length die, followed by the collet neck die to get it to the correct diameter (expander mandrel removed from full length die). This generally results in about 1-1.5 thou runout consistently - so consistently it makes me wonder if my die is somehow out by that much, as it is incredibly incredibly rare to see less than 1 thou at the neck.
2. The die was adjusted so that it set back the shoulder to the correct headspace for the rifle. This meant enough contact that the press cams over, but I could tighten it and gain an extra 2-3 thou I'd say of headspace if I needed/wanted. My gun has very short headspace (the go gauge just sneaks closed, JUST, after lapping the lugs for full contact).
3 I pause for about 2-3 seconds I'd say, remembering that the brass is also freshly annealed. Think I should wait longer? I tried waiting longer before and really didn't see any measurable difference wrt headspace, neck diameter, runout.
4. They are supposed to be very good quality, and I personally feel they are. I just weighed 100 pieces and came out with all of them being within 1.6 grains, with 95percent within 0.75 grains of one another. 85 percent were within 0.44 grains. Water capacity was within 0.3 grains for all but one, and that one was .2 grains from the average (low). To me, that is incredibly consistent. Unfortunately I do not have a method yet to measure wall thickness but i think I can devise something pretty easily, might try to do that this week, but gong to get to the range this weekend hopefully and finish some load development, see what my gun and me like most between Sierra 69 and 77 match kings, 70 and 75 grain Berger VLD, and then for prairie dogs I'm testing out 50 and 55 grain v-maz and game kings, plus 64 grain Berger flat base for coyote. Yes, I have a good weekend of shooting coming up. Don't get out as much as I'd as I am a single dad, so getting out all day means either arranging a whole day for Charlotte to go to a friend's place, or it means me bringing enough stuff for her to do she gets tired of shooting her rascal (she's only turning six next month
.
My full length bushing die gong to be another week or more as Redding put a 6br die in a 223 box grrrr
