Rocky Mountain
Well-Known Member
Fiftydriver when you did your case volume testing of your 338s using ball powder did you fill them to the top of the case mouth or to the shoulder neck junction?lightbulb
Fiftydriver when you did your case volume testing of your 338s using ball powder did you fill them to the top of the case mouth or to the shoulder neck junction?lightbulb
Quote from his first post.
I used Hodgdon BL-C(2) powder, filled the cases full to the case mouth and find the case capacity for each.
Rocky Mtn, The Excalibur case is slightly bigger than the 416 case we have been doing for years. I am not doubting you just wondering how you improved it to get the case capacity. Kirby said he cut the angle back and that could have decreased powder capacity back down to the 416 imp. Without seeing both designs I don't know so just asking.
I think the old A-square you could make out of a 378 wby. The new one called the Excaliber is on it's own rocket ride and a huge non-belted case.