I have hunted with a 12" CONTENDER barreled 445 super mag since 1995. Only bullet I ever found that could handle the velocity and impact on deer size game and larger was the 300 gr flat point. I've loaded the win 296 powder since the begining, one of just a few powders listed in the tc reload manual. I'm useing large rifle, Fed 210 primers also recomended with 29 gr of win 296 this is a 1.5 gr below max. This load is direct from there manual, I'LL REPEAT THIS IS A CONTENDER LOAD MANUAL. I can't say I have ever fed a steady diet of this through my contender it takes a pounding shooting these loads lots of recoil and blast but it has taken 6 doe's and 2 bucks over the years. I shoot 44 mags for practice to keep the wear and tear down on my frame and barrel, you must make sure you clean the chamber area to remove all fouling from 44's before fireing the 445 shells again.
Years ago there where a few super mags calibers put out most people hated them because they misunderstood them trying to shoot light bullets that couldn't handle the velocity. The 357 Max was one that paid the price, it was never ment to shoot under 180 gr bullets. The 414 Super mag was in the same boat, factory bullets were never produced to reach this calibers potential 220 was as heavy as they went, This round shines at 240 gr lead bullets and heavier, which makes it a lead bullet shooter proposition only. I feel alot of people missed out on some really made for hunting handgun calibers that were ahead of there time and died early because of lack of knowledge about heavy bullets use.
There may be some new bullets out there that work in my 445 that I haven't tested but I found what works for me and it has proven results. A few years back manufacturers finally admited win 296 powder and H-110 powder were the same so I tried loading it with the same results, imformation from a factory rep for contender who gave me the heads up for the same load in H-110. I've thought about buying one of the new manuals for contender but never have, I don't own and encore or g-2 so didn't see any sense in it.
Woods