I was fortunate enough to buy an in proof 20 bore Harkom boxlock at the Southern this spring with excellent wall thickness. The gun is currently with my gunsmith having some cosmetic surgery. Mechanically it needs nothing. However it is a 2.5” Damascus gun. So at long last now that I am retired I am going to take up reloading my own shells.
An experienced reloader friend has set up my new MEC Size Master for me and taught me the basics. I have been reading and researching the process and feel comfortable reloading 2.5 “ Cheddite hulls using a formula provided to me by BP using Winchester powder. I have a good supply of plastic RST 20 bore hulls and I purchased some primed Cheddite 67mm papers. However, I am hoping to find a bigger variety of recipes utilizing other powders.
Published data for reloading 2 1/2 inch 20 gauge shells appears to be very scarce. A friend shared with me the 16 gauge society’s low pressure reloading file and it is robust. I wish I good find a similar resource for low pressure 20 bore reloading.
Any words of wisdom from the group here?
Thanks,
Dr. P
