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Old June 5, 2019, 08:41 PM   #21
Stats Shooter
Senior Member
Join Date: August 26, 2016
Location: North Dakota
Posts: 1,607
I have dealt with compressed loads a lot. I like the case to be full enough that its orientation has little or no impact on primer to powder gap, but not compressed enough bullet seating becomes a problem. I have tried up to 10 % compressed and I get inconsistent seating depths. Even with a drop tube it can be an issue.

I have never seen the bullet get pushed back out, but that doesn't mean it doesn't happen. As a rule I try and stay at or below 105%, but it depends on the powder. Ball powders like H335 doesn't compress well, while H1000 or 4831 does.

4064 probably would compress, but I use 41 gr behind a 175 gr match king and find no compression.
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