the ... formula ... was a range of rods.
i still have the original tip tornado, that later bacame the sport.
there was quite a range of rods that came under the ..formula .. banner.
what the rod your looking at will handle will depend on the actual model.
also remember.... the formula,s are very old rods now and built before autoclaving.
there age will mean that like mine, lots will have gone soft through age and use.
my tip tornado is now very soft in the tip and nothing like a recent tip sport. it does make an excellent clean ground, match rod.