- Joined
- Mar 22, 2016
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- 2,263
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I am sizing my 300 gr SST bullets for my Moutaineer and I want them to be precise so I would run thru the adjustable sizer twice and check for fit. Just turning a little at a time. At .452" it was a no go. I couldn't get the started until I got to .4515" and then it had to be perfectly aligned. These shoot the best so far.