I use a lead sled with 25 pounds of shot. Reduces the recoil on both of my rifles to 30-06 levels and I'm fine there. As you mentioned recoil isn't much of a factor in the field, unless your prone with a .340 WB. You've made a great choice, live in the best state in the union for sportsmen, and you've obviously mastered a specialist's caliber.
My answer to your question, is no, I don't think your elk rifle can be beat. However, its a knife fight for the number two spot...
When I first bought the 340 Accumark, because of all the press, I bought a bunch of 200gr and 210gr cartridges, hoping I could handle those. I fired a couple, and realized that it was not that big of a deal.
I have far from mastered anything. I can shoot it from the bench, and have shot game with it, but I am far short of a master with anything. But I can shoot it well enough for some situations, and I'm trying to get better. As with all, always, I have a lot of work to do to get better. I'm unlikely to do anything with it that a 30-06 in good hands won't do, which I fully understand. Almost all of the game I have shot was within 100 yds, which I always work for. I probably won't see it, but if an elk was 350 yds - 400 yds away and about to disappear, I might prefer its capabilities.
