TaperPin
WKR
- Joined
- Jul 12, 2023
- Messages
- 3,255
Any .277” cartridge seems interesting to me.
Just out of curiosity I grabbed the dimensions to see how easily 7saum brass can be used - I’m just thinking out loud here, don’t take my word for anything. It’s close, but .005”ish shorter at the outer part of the shoulder, and short enough where it meets the neck to still be a little short after being sized down.
An extra .005” stretch isn’t huge if it only happens once on first firing, but it might be worth expanding the neck, then sizing it down to create a false shoulder, or shooting it the first time with a solid bullet jam into the rifling. I’m wondering if 300 SAUM isn’t easier since it would already have a false shoulder when sized down? IDK
I don’t have 6.8 barrel yet, but hopefully one will eventually fall out of the sky in the next year or two.
Just out of curiosity I grabbed the dimensions to see how easily 7saum brass can be used - I’m just thinking out loud here, don’t take my word for anything. It’s close, but .005”ish shorter at the outer part of the shoulder, and short enough where it meets the neck to still be a little short after being sized down.
An extra .005” stretch isn’t huge if it only happens once on first firing, but it might be worth expanding the neck, then sizing it down to create a false shoulder, or shooting it the first time with a solid bullet jam into the rifling. I’m wondering if 300 SAUM isn’t easier since it would already have a false shoulder when sized down? IDK
I don’t have 6.8 barrel yet, but hopefully one will eventually fall out of the sky in the next year or two.