Gents,
I solicit your help.
I'm loading for a .223 AI and I recently went to a lighter weight bullet and it doesn't have enough length to seat to the lands. Even .020" from the lands the bullet is barely in the case and I can still remove it with my fingers. A friend suggested that I should have at least half of the bullet diameter in the case neck. I seated the bullet .110" into the neck and everything looks right, but there has to be a better way to determine the length. I'm open to suggestions.
Also, I'm having some trim issues. Using the AI system, cases tend not to grow in length. I have a trim gauge and it measured 1.771" to the lands so I was trimming to 1.765" which leaves .006" clearance for brass stretch under firing. The cases never even get close to that length! I end up with cases from 1.737 to 1.752". This is not conducive to accuracy but how do I fix it?
The way I figure it there are two ways: cull by length from the beginning or find the shortest case and trim to that length. I did the latter and my cases are now at 1.740" but now my OAL case doesn't match my trimmed cases. :banghead: I'm leery to trim my OAL case and I'm confusing myself.
Somebody help me, LOL.
Ed
I solicit your help.
I'm loading for a .223 AI and I recently went to a lighter weight bullet and it doesn't have enough length to seat to the lands. Even .020" from the lands the bullet is barely in the case and I can still remove it with my fingers. A friend suggested that I should have at least half of the bullet diameter in the case neck. I seated the bullet .110" into the neck and everything looks right, but there has to be a better way to determine the length. I'm open to suggestions.
Also, I'm having some trim issues. Using the AI system, cases tend not to grow in length. I have a trim gauge and it measured 1.771" to the lands so I was trimming to 1.765" which leaves .006" clearance for brass stretch under firing. The cases never even get close to that length! I end up with cases from 1.737 to 1.752". This is not conducive to accuracy but how do I fix it?
The way I figure it there are two ways: cull by length from the beginning or find the shortest case and trim to that length. I did the latter and my cases are now at 1.740" but now my OAL case doesn't match my trimmed cases. :banghead: I'm leery to trim my OAL case and I'm confusing myself.
Somebody help me, LOL.
Ed