Which mags for seekins bravo in 6.5prc?

[Lucreau]

Have a seekins precision havak bravo on the way and would like to order a few more mags. I’ve gotten mixed info on what I actually need. Can anyone tell me if the accurate-mag DSSF mags will work, or do I need the single stack single feed? And what OAL I’ll need? I’ll be using factory Hornady ELD Match ammo
Thanks

 

[Lucreau]

Disregard, was able to find them

 

[nexusfire]

300wsm mags