FX Fx dynamic magazine issues

I just mounted a Vortex Viper PST 5-25x50 on my new fx dynamic with vortex high rings. The magazine won’t go in, there’s probably less than 1 mm of clearance needed for it to fit. Super frustrating, this magazine design seems really dumb. Can I single load slugs with no magazine while I wait for extra high rings ?
Get the carm or orioniguanahunter mags