I have never owned a RAT7 so you will have to ask others. D2 is a great steel but maybe not meant for big blades and should be kept at about 4 inches. It may be too brittle for a 7 inch knife.
SNIP
The RAT is cool but D2 may be too brittle for a survival knife that is that long and heavy.
Don't take my word for it. This battle over D2 has raged on for years here, the "someone knew someone that told someone else that they heard something" about D2. Mostly the ruckus has been started by folks that have never used D2 knives of any size. Bu they have heard things.... they think they saw a video....
I have the RAT 7 in D2, and did the same thing this guy did after I watched his video. Since I honestly wanted to see if it would stand up to hacking away before I took it out camping, I chopped an old, really hard piece of
4X4 oak in half. No, the blade wouldn't shave when I was finished; far from it. But it still cut cardboard fine. I proceeded to drop it point first into a stump from shoulder height (held the knife out at shoulder length and dropped it on the point) about 20 times. The stump was hard enough that from about 5" the knife wouldn't go in more than a 1/4 - 3/8 inch, but it stuck and there was not point deformation. I have walloped the crap out of my D2 knives (I have several) and never had a problem. I have used a couple of them too hard to think it is just luck.
Check this out:
http://www.youtube.com/watch?v=jvEkdJJ9wuk
You can't think that knife was abused
or babied when you see what he did. Blunt has a pretty good reputation for his tests and opinions.
I am not saying that a D2 is the best bet for anyone. I am not saying that there aren't better choices than the RAT 7 for you. But if I hadn't taken a chance and tried it out for myself with the knife in my hand to my own satisfaction, I would have missed this really nice knife.
BTW - I wouldn't discount what
cricketdave said. If he said he broke one, I certainly believe him. No production knife is perfect - none! I was glad to see thought, that Ontario made it right. For years folks
"had heard" about how bad their customer service was to deal with. I had a small problem with one of my Ontarios when I bought one, and then I messed up the screws and nuts holding the scales on it. Like dave, they fixed me right up.
There are even instances *gasp* of broken Beckers and Kabars... Get on youtube and dial in the broken knife videos. Plenty of ammunition to make a case for or against just about any knife steel, or even a lot of knives, for that matter.
Robert