Just to be safe, which Winchester 150 gr Power Point?
One of Winchester's 30-30 factory loads is a well rounded 150gr Power Point that is intended for use in tube feed magazines.
They also make a 150 gr PP for 308s, 3006, etc... that has too narrow of a lead tip for me to trust in a tube.
I don't see the need to getting greedy with ballistic coefficients in a 30-30. A spitzer may be 250 fps faster at 200 yards, but not fast enough for hunting purposes. A flat or round nose doing 1600 fps may expand more reliably than a spitzer doing 1850.
If you think you need to stretch your 30-30s legs, remember the first round in the chamber can be anything, and _one_ more (not two) of most rounds can be loaded in the tube.
Tom
[This message has been edited by Tom Matiska (edited October 13, 2000).]