I cant imagine it being any different than with any other cartridge. I have been sub loading for my 303s, 308, 3030, and bigger stuff for over 20 years. The problem I found was no jacketed bullets gave any expansion, they went straight through carried on. So I used cast ones with a nice flat nose. I know you can buy subsonic jacketed now but Ill never bother.
Give shooter nz a look he does a huge range of cast struff and should be able to give you the right advice.
Bookmarks