foremans giving me hell what smpm or sfpm do you use with carbide tipped
endmills i.e p20 or toolsteel

Many insert manufacturers will recommend a particular insert for a given material, and will then give a range of speeds ( sfpm or smpm ) and feeds.
Machinerys handbook should give you a basic starting point for most materials.
Here is a link to an online speed/feed calculator that has speeds and feeds for different materials.
http://www.whitney-tool.com/html/calculatorSpeedFeed.html

depends on what your trying to achieve.... roughing, finishing? tolerances and surface finishes will have a big impact on how aggressive you can be....eg: in 4140 i run a 3/4" dia. indexable carbide 2 flute emill at .060" doc at 2400 rpm & 36 ipm, when i'm finishing with a 1/2' DIA. solid carb 4fl emill in the same mat'l i run at 750rpm at 6.0 ipm to achieve +-.0005 x 2" dp. & re-run the tool to take the deflection out. works great! and i get the most mileage out of the tools....the ruffing tool is cooled by air only, finisher with coolant.

thanks tc26 you dont know how much thats helped me the chart ive been using only gives solid carbide feeds the whitney tool company site is really useful

what should my speed and feed be for cutting 304 stainless with 6 inch saw blade .125 thick using a vertical machining center

You need to know how many teeth in a cutter to calculate feed.