| rigbymauser |
| (.400 member) |
| 14/12/09 04:32 AM |
|
Re: 10bore shoot
|
Quote:
If the bore is .793", what is the groove diameter?
Cheers
Tinker
The rifling is shallow metford rifing. I haven`t measured the rifling yet, but it could easly be around .789-.787. standard grooveheight on the metford was only .002-003".