The Extruded powders seem to do a better job at lighting up the tracers than ball types. The 4895s and 4064s seem to work best for me.

And remember that 145gr tracer bullet is LONG for its weight...it will take up more room seated deep down into that case. As this raises chamber pressure a bit, reduce your charges like John mentioned when working up a load based on a nontracer bullet of the same weight.
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