Some recommended reading for Vintage Canvas: https://www.africahunting.com/threads/ma...velocity.47277/

The third post is directly relevant to issues you will encounter while reloading for the 'prewar' MS. Ignore the DWM 'Cordite' comment / warning, as Kuduae accurately pointed out that the Deutsche firm did not use the stuff

. Goes for old enough Brit. cartridges, though.

There is considerable redundancy throughout the remainder of the thread (of course, I wrote much of it) as there are a variety of linked posts, magazine articles. and general MS discussion. Much good information to be reviewed, however.