Seems to me to be of little use if the test is done at 25mtrs, indoor and with the barrel clamped.
I would expect a 4.5mm hole from a B2. The FTP900 is aimed (pun) at the FT market so therefore any test card should reflect it's performance at 50 mtrs. I don't think it's a rifle developed from a 10mtr rifle but one that was designed for 50mtrs.
Why not be proud of your product and provide a meaningful test.