Yes, you can shoot 375 spitzers but they need to be seated pretty deep to fit in the magazine.
The 444 is just the opposite. It works best with FTX type bullets seated long.
Tony
I miss my .375 JDJ Encore barrel, and your version is is flat out cool. If I could run 235 gr Speers I'd be pretty happy. I really liked 260 AB in my JDJ, but if mag length is an issue the Speers would still hammer.
