It depends on your gun's dimentions and your bullet's hardness, lube, whether it has a gas-check, etc. In an ideal setup, you can shoot lead up to 1500 FPS without leading. In a poor setup, you'll lead-up the bore as slow as 800 FPS.
I suggest you try different primers first, and if that does not work, try a different powder, but not H110, because that will immediately jump your velocity to 1200-1300 FPS and will surely make your cleaning more difficult.
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