GBExpat
Member
My original plan was to use some "leftover" SR7625 to load-up a bunch of target rounds (100gr .314 lead for a .313 groove diameter bore from BadmanBullets) for GrandPop's old Colt Army Special .32-20.
I prepped 3 12rd strings (4.5, 4.7, 4.9gr) but seeing that it was only filling, maybe, half of the available case volume, I decided to check it for the differing effects of Powder Back & Forward ... so I fired each string half&half thru the Chrony.
The velocity (FPS) results, Back/Forward:
841 / 765 = 76
925 / 834 = 91
950 / 853 = 97
So in my next batch of .32-20 Test Strings I included 12rd Strings for Unique (4.3), BE-86 (4.3), Bullseye (3.3), 700X (3.3) and 800X (4.8).
The results:
964 / 756 = 208 Unique
873 / 825 = 48 BE-86
851 / 798 = 53 Bullseye
890 / 809 = 81 700X
863 / 812 = 51 800X
No, I did not check them in Powder Level orientation.
I just thought that some of you might find the results interesting, so I figured it was worth my time to share them.
I guess my next step will be to see about cutting some styro (any better material?) plugs for these .32-20 cases ... just for testing, since I already have zeroed in on my .32-20 Trail Boss load.
I prepped 3 12rd strings (4.5, 4.7, 4.9gr) but seeing that it was only filling, maybe, half of the available case volume, I decided to check it for the differing effects of Powder Back & Forward ... so I fired each string half&half thru the Chrony.
The velocity (FPS) results, Back/Forward:
841 / 765 = 76
925 / 834 = 91
950 / 853 = 97
So in my next batch of .32-20 Test Strings I included 12rd Strings for Unique (4.3), BE-86 (4.3), Bullseye (3.3), 700X (3.3) and 800X (4.8).
The results:
964 / 756 = 208 Unique
873 / 825 = 48 BE-86
851 / 798 = 53 Bullseye
890 / 809 = 81 700X
863 / 812 = 51 800X
No, I did not check them in Powder Level orientation.
I just thought that some of you might find the results interesting, so I figured it was worth my time to share them.
I guess my next step will be to see about cutting some styro (any better material?) plugs for these .32-20 cases ... just for testing, since I already have zeroed in on my .32-20 Trail Boss load.
Last edited: