When breech seating your aren't too likely to compress the daylights out of it.  Usually you run the powder to the top of the case, stick a thin wad on it and shoot it.

I started using about 0.030" to 0.060" compression after reading some stuff Steve Garbe had written about reducing case stretching when shooting breech seated BP loads.  I don't think it made any difference to be honest

Chris.

If you're committed to experimenting with sifting, I believe Cal-Graf or Lee Shaver offer(ed) a set of brass screened drums for progressive sifting of BP.

Richard,

Looking forward to your results as I am planning on gravitating to the 32's, both a 32-40 and a 32-20...

I, like every one at some point in time, weighed and segregated bullets. 
I'm not sure how the casting temp affects voids but I'd guess the lighter bullets have some sort of void in it.

I've taken a few lighter bullets and super glued the base to a piece of aluminum so it stands vertical, and with a torch melted them from the top down to see if the voids appeared at the top vs. the base. Not surprisingly very few were exactly in the center and most were near the base. Maybe that is why Nose pour moulds are popular. ???

I look forward to looking into that devise that was spoken of early in this thread.
It might be fun to set up a couple of lathe like pinpoint centering pins to see if a bullet will settle heavy side down kinda like a tire.
Of course this is probably nothing more than idle useless conjecture but from my perspective it may be fun. 
Maybe there is a computer genius out there who will calculate if say .3 grains weight difference x.000" off center axis will be negated by centrifugal force. 

Anyone, Ferris?


Grand slam wrote on Mar 22^nd, 2024 at 5:14pm: