I've been making Martini 577/450 brass from 24 gauge brass shotgun shells and it's going great! : r/shittyreloading

517 best r/shittyreloading images on Pholder

File:577 450 Martini-Henry Great Britain Royal-Laboratories-MkII-480gn-bullet.jpg - Wikimedia Commons

Reloading Equipment – Martini Henry Society

Forming a 24 Gauge Shotshell into a 577/450 Martini Henry Case

577/450 out of 24 gag brass without a form die

676 best Shotgun Shells images on Pholder Smoking, Shotguns and Redneckengineering

577/450 Martini–Henry - Wikipedia

Forming 577/450 Martini-Henry Brass

Reloading for.577/450

My buddy's Martini Henry and his 577/450 reloads : r/reloading

517 best r/shittyreloading images on Pholder

Martini-Henry: Reloading the 577/450