View Single Post
 
Old 09-14-2021, 02:10 PM
stansdds stansdds is offline
Member
 
Join Date: Apr 2007
Location: Virginia
Posts: 5,762
Likes: 9,293
Liked 6,965 Times in 3,378 Posts
Default

I've never used magnum primers in my 357 loads using fast or medium burning powders. I have heard that magnum primers may have a small benefit in terms of igniting fast powders in the longer cartridge, but they are not required. For slow powders like AA#9, HS-6, H-110/W-296, magnum primers are a must.
__________________
VCDL, GOA, NRA
Reply With Quote
The Following User Likes This Post: