
Congrats on getting a 500 S&W. I have one, an 8 3/8". They are a handful and have the ability to inflict pain

at both ends. I've tamed mine somewhat with a set of custom grips VS the rubber Hogue grips they come with.
Virtually anything I've fed through it shoots well, cast, jacketed, hot and/or light loads. One of the cast I use is a 440gr with a gas check which sounds close to what you've planned to get. In addition I also have access to a few more cast in 350gr, 370gr and 400gr. In jacketed, I use a modified Speer 325gr, Hornady 350gr HP, Sierra 350gr HP and 400gr. I did try some bullets of 500gr and larger but for me, once I got much over 400gr, accuracy seemed to start dropping off.
For jacketed loads any of the manufacturers have a good selection of data, primarily tailored for the products they produce and Lyman, good info on some cast and jacketed.
Much of my cast load data has come from a number of other sources such as various articles on the subject;
Back to your request for load info for the 435gr cast you plan on using, where I got the info I use for my 440gr GC heavy load is from the first item listed above, 37gr of H110. For a lighter load with that bullet, 14gr. of Unique.
Initially when the first ammo and brass for the 500 came to be, the primers it was made to accept were large pistol. With some of the 'heavier' loads using H110 there were some instances for me, when there was considerable unburnt powder left behind. Even with magnum large pistol primers. I believe it started with Starline brass, and I think all the producers have now followed suit, 500 S&W brass is made to accept large rifle primers. I haven't had an unburnt powder issue since and have set aside my earlier production brass made for lagre pistol primers for light load use.

Hope I haven't bored you and hope the info is of some use to you.
Oh, another source of info I neglected to mention is from;
Beartooth Bullets
http://www.loadswap.com