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Came back and hand weighed some more 800X rounds to see if the carbine would cycle. Not happening. Got to go back and try the pistol again and make sure cycling wasn't a fluke.

Then came back and hand weighed and loaded 22 more with 55 gr BTSP on top off 27.5 CFE223 .
So this IMR 800X will shoot this ok, just not cycling?
 

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I'll load some up to try. What length barrel and twist?
22 inch, and 1 to 9 . I worked up some of the 69 SMK's because Savage info says that is what they used for that rifle, in their factory accuracy testing.
 

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There was enough powder to cover the bottom of a butter tub, made a 7 1/2' line. Got (37) more rounds to pull.

View attachment 135047
What do you suspect this powder is?

Closely resembles IMR 4064, my main powder for this type round.
 

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Not a clue, but pretty sure it was two different powders. The Core Lokt bullets were loaded with one, the soft point bullets with another. At first, I thought the powder in the Core Lokts was Varget, but it didn't have that funny smell.
I pulled down a 308 core-lkt 150gr, and it had a very dull ball powder, not anything that I had any of, or seen.
(for MSGO info)
 
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