I haven't stuck a gauge in there ; but , at 1.35 the bolt closes without any resistance. With a dumbby loaded w/a 220 Sierra the oal chamber length was 2.30. I have been loading evrything except the 125's at 2.26 +or- 10. I tried going longer at first; but , I had to put way too much effort in closing the bolt, so I decided to stay closer to the .223 length so as not to have any problems.
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