S&W 500 info needed

[AK737FO]

Hello,
I have a new S&W 500 (4 inch) that I am going to be reloading for soon.  I just about have all the parts and pieces that I need, but I was hoping to pick up some additional information here. 
I am going to be loading the 440 grain wide nose lead with a gas check from Leadheads.  I am looking at the 34 to 40 grain range of H110.

So first question - what is the best primer to use.  I have seen loads using the Large Pistol Primer, the Large Pistol Magnum Primer and even the Large Rifle Primer.  In my experience, there can be a lot of differences in between primers.  LPP vs. Mag primer vs. LRP - this is quite the spread and I hope you all can shed some light on this subject for me.

Second question - what is the max case length and what is the "trim to" case length?

Third question - what is the max cartridge overall length?

I realize that these are somewhat silly questions for an experienced reloader, but the problem is that I can not find a single reloading book that covers the S&W 500.  As popular as the cartridge is, I would have expected there to be at least one book out there on it - but I can't find anything except word of mouth.
Thanks for your input.
AK737FO

[quickdtoo]

Pick up a 2007 Hodgdon Annual, it has all that info including 440gr cast load data, although it's for the Cast Performance bullet. The Annual costs just $7, should be available at your local Walmart. Their H110 load starts at 34gr, MAX is 38gr. The data is also available online, but they don't show trim length which is 1.615".

Tim

http://data.hodgdon.com/cartridge_load.asp