Is it worth it trying 6.5 Grendel in a custom short range BR rifle?

[cceckhoff58]

Short range BR rifles are all 6 PPC, 6 BR, 30 BR. With a tight custom chamber Grendel might fit in well here but I don't want to spend $6k only to find out that I was barking up the wrong tree. Soliciting your knowledge and opinions.