| ALAN_MCKENZIE |
| (.400 member) |
| 22/01/09 01:48 AM |
Re: ??? MARTINI ??? UPDATED
|
beleg 2,the rifling is 3 groove and slugs out at585...590.
Because of the thickness of the rifling its hard to get a groove depth because the rifling is the same width as the groove.
Does that make sense?
Al