| Mike_Johnson |
| (.300 member) |
| 26/05/11 10:43 PM |
Re: my 12 bore sxs with fully rifled barrels
|
I will have to try some balls out of it. I don't know exactly but by looking down the barrel it looks like there are 8 grooves, all completing one full twist and about 15 degrees of another before I run out of barrel so I'm guessing 1:20.