Driver size for 10T scope rail

[Tirebiter]

I took my new 10T out to the 1000 yard line for the first time the other day and found I didn't have enough up elevation in my cheapo BSA tactical scope. The 10T appears to have a 0 MOA scope base, not the 10 or 20 I was told it had when I bought it. No big deal, I have a 20 on order and expect it shortly. I've been looking at the factory rail mount screws and they _seem_ to be T10. A T10 driver fits with a bit of back and forth wobble. I just wanted to confirm and ask if I need to do anything special to get those screws out. I'm scared to death of stripping them.

[J.Baker]

Not sure what the factory is using, but most scope mounts I've encountered with torx screws are T-15.

[Robinhood]

I am with Jim, T-15.

[sharpshooter]

The majority of 6-48 base screws take a T-10. Farrel bases use a T-15.