Case web expansion

[dcloco]

Chamber is big.

 

[cajun]

Chamber is big.

Saami drawing shows .4685 maximum cartridge minimum chamber at web. Chamber drawing shows .471 at web. The brass is undersized and stretching.

 

[dcloco]

Saami drawing shows .4685 maximum cartridge minimum chamber at web. Chamber drawing shows .471 at web. The brass is undersized and stretching.

In your first post, 470 was mentioned. Brass will shrink a touch after it cools down.

Have you cut a case apart lengthwise?

Checked with a sharpened paperclip?

Was this a factory chamber, rechambered to Ackley Improved?

Forgot to ask, was this the first and/or fireforming load?

 

[cajun]

In your first post, 470 was mentioned. Brass will shrink a touch after it cools down.

Have you cut a case apart lengthwise?

Checked with a sharpened paperclip?

Was this a factory chamber, rechambered to Ackley Improved?

Forgot to ask, was this the first and/or fireforming load?

fire forming loads on new AI brass. Zero shoulder growth.

 

[dcloco]

fire forming loads on new AI brass. Zero shoulder growth.

Have you cut a case apart lengthwise?

Checked with a sharpened paperclip?

Was this a factory chamber, rechambered to Ackley Improved?