I used Win SR's for years with ball powder in 223. No problems here.
The temperature the cartridges are fired at will have an effect.
Mine were never fired below 40 degrees.
Several years ago I had to switch to Wolf SRM due to availability, not due to needing a magnum primer.
Couldn't find Win SR's at the funshow for $15 per 1k anymore.
Only time I ever used a magnum primer is in 338 WM, 357 and 44 mag.