I have a 6.5mm BRM 24" barrel on the way for my old Contender from EABCO.
Only a couple loads listed on there website. Looking for more load data.
I plan on using it for paper punching and some deer hunting.
I don't have any load data for it but there are lots of 30-30 based wildcats that are probably similar in capacity you might be able to cross-reference for ideas. They list using H4831sc. It may work just fine but seems like it would be a little slow. IMR 4895 shoots like it was made for my 7-30 Waters imp which is getting close to max volume on a 30-30 case.
How does the 6.5 BRM capacity compare to the 6.5 Bullberry?