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Good advice.
ELD-X jackets are harder than the ELD-M, so are harder to engage with the lands, which can push pressure up a bit. Best to load a grain or two lower than normal with them.

Mine runs 2740 fps in a 22” barrel with a mild load of 2213sc, Lapua brass and 162 ELD-X.
Cutting the barrel to 19” will have limited the speeds you can get, cos physics, but the new barrel should...