09 December 2019
It appears that with good casting techniques, the larger bullets
can be cast at similar percent variation in wt. as the smaller ones.
Here are some runs data on my nom 370 gr 40 cal DDEPP(DualDiameterEllipticalPaper patch) bullet for
1/23/17 (ambient temp-35 degrees--- 368.45-369.30gr Delta =0.85gr sampling: 20 out of 138 cast
2/3/17(ambient temp-43 degrees---- 370.1-371.2gr Delta= = 1.1gr sampling: 41 out of 176 cast
Good enough for shooting out to 1K
My smaller bullets are proportional in weight and similar to macpeter's results :
260-117gr MOS/NOE 115.9-116.3gr Delta of 0.4 gr
311334Lino 174.9-175.3gr Delta of 0.4 ( Lino is Great!)
So, I have been visually inspecting only since then. Other than to check weight ranges when I start with
a new 60# run of my 9+1 COWW/Lino alloy.
I think I may be able to do better now with my PID controller. Checking, now, weight ranges seem to be
only a bit better. But it is a joy not to have to constantly adjust the rheostat on the lead pot once
the PID /pot temp settles down