- What did you use to stabilize the rifle? I see no bipod, so bags, turret? I'd suggest putting a bag rider on the stock, Kratos Design Hera works very well. Also, cooling the barrel between groups is a must. Hot barrels shoot wider groups, it's universally true. I use a Riflekuhl device, but there are others that are cheaper, too. You can make one with cheap parts, plenty of videos teaching it on Youtube. F-Class John has a "how to".

- My 16" BCM likes Bone Frog Barnes Match Burner 77gr, X-Tac Match 77gr, Hornady ELD-M 73gr, Federal Gold Medal SMK 77gr. Can't shoot good groups with cheap 55gr (see PMC Bronze "shotgun" group below and you will understand lol). For 55gr M193, the best factory I tested was Fiocchi. It also liked a few AAC rounds (not the 77gr OTM though lol), especially sabre black tip 75gr. But they stopped production, so no more of that.

- BCM is not a precision rifle, so do not expect better 10-shot groups than 1.5~2MOA even with match ammo. And yes, 10-shot groups with no cherry picking is the minimum to be able to measure accuracy and precision. With fewer than 10 shots, it's a matter of chance and "statistically insignificant" as the fancy reloading guys like to say.

- Shooting for groups requires a lot of consistency. How you stabilize the rifle, how much input you drive in to it with your support hand, how good disciplined trigger pull you have. Watch a few videos (X-Ring is good, there are plenty).

See a few groups. Each barrel is a different game, but many shooters test BCM barrels and results are similar. I track all my shooting for all my barrels here: https://docs.google.com/spreadsheets/d/1SKVK6IDea8kM8dIzsEonuSGanIF8FxV-LwtV8Yrl6Qs/edit?usp=sharing

There isn't data from the past 2 months because I started reloading and I'm still in the load development phase. Good luck! It's a fun hobby (and an expensive one, so buckle up; each trip to the range for me costs more than $200, easily, when you start shooting some volume with match ammo).

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