MrAndrew47
Member
- Joined
- Feb 15, 2010
- Messages
- 7
Dear Board,
First post. I just got into reloading again after my father had taught me back when i was ~15yo (I'm 26 now) using his lyman 300 tool and dies.
For my 22-250 (Ruger M77 Mark II Target), after firing my S&B factory rounds, i decided to neck re-size only those cases with my Lee Collet dies for longer case life, better theoretical accuracy, and to avoid having to lubricate.
The problem is, while the case length is well within the range, about 20% of the rounds will not chamber (i can't close the bolt) and there are some circular marks on the primer after i attempt to do so. The COL is exactly where it should be, and there are no signs of the bullet touching the rifling (i moved the COL down a little to make sure that wasn't the case and the bolt still wouldn't close).
Also, with the rounds that do chamber, i went from 1/2MOA with the S&B factory ammo to about 3MOA with my reloads. I am using Armscor 55gr FMJBT with 32gr Varget and CCI Benchrest Primers (that's all they had). I understand 32gr Varget is a bit low for 55gr bullets.
Do i need to full-length re-size this brass after the first time i fire it? Is that something that happens commonly?
Andrew
First post. I just got into reloading again after my father had taught me back when i was ~15yo (I'm 26 now) using his lyman 300 tool and dies.
For my 22-250 (Ruger M77 Mark II Target), after firing my S&B factory rounds, i decided to neck re-size only those cases with my Lee Collet dies for longer case life, better theoretical accuracy, and to avoid having to lubricate.
The problem is, while the case length is well within the range, about 20% of the rounds will not chamber (i can't close the bolt) and there are some circular marks on the primer after i attempt to do so. The COL is exactly where it should be, and there are no signs of the bullet touching the rifling (i moved the COL down a little to make sure that wasn't the case and the bolt still wouldn't close).
Also, with the rounds that do chamber, i went from 1/2MOA with the S&B factory ammo to about 3MOA with my reloads. I am using Armscor 55gr FMJBT with 32gr Varget and CCI Benchrest Primers (that's all they had). I understand 32gr Varget is a bit low for 55gr bullets.
Do i need to full-length re-size this brass after the first time i fire it? Is that something that happens commonly?
Andrew