2 seconds with 100% accuracy of sustained fire, taking a good/large part of the clip...just hoping the next bloodthirsty, melee weapon enemy can't close the gap during reload and make short work of you...sounds good...

Edit: And those 2 seconds mean that the enemy is coming straight at you, on a maybe 3 second charge (3 seconds to compensate for target identification time etc), not using any cover...that's smart...

2 seconds of sustained fire (assuming the ROF of bolter is about the same as AK47) it means probably full clip easily, so it's more than the 15 rounds I was proposing.

2 seconds of 100% sustained fire, or you know, you score headshots which apparently will be damage multipliers which means it might actually be a lot less than 2 seconds. Oh and one hit kill weapons confirmed too. None of this takes into account that there will usually always be more than one guy shooting at you so the average lifespan will probably be, at best, 1 second once you're fired upon

I do not like this news, this does not seem like a higher TTK to me, it just seems like more of the same. It also seems to me that it will have to make melee weaponry kill faster than 2 seconds which essentially makes them instant kill weapons as well or they won't be able to compete with ranged weapons.

Will be interesting to see how it all goes down for melee, i do think i recall them saying somewhere that some classes will have natural range resistance so that might work as a bandaid for melee lovers.

One hit weapons are confirmed from a lore perspective from the start...I mean, the Lascannon is a big anti-armor laser weapon...it should kill people with one shot...think of it like a IRL tank round hitting directly a single person...you don't expect that person to survive...

But the lascannon is a anti-armor heavy weapon, will it be easy to aim it at a single person?
The heavy bolter is "spray and pray" type of weapon, expect a BIG recoil and shot dispersion...hitting a single target repeatedly?

All the heavy weapons are powerful, but they are designed for specific uses, so they will have limitations...

Indeed, 2 seconds is a looooong time in game terms. Heck, I remember one time they said 5-7 seconds and people said "oh noes, melee will never be able to reach people D:", then I pointed out that's enough time to empty a typical 30-round magazine with a rather "meh" 600 RPM twice, and even at a super-slow 240 RPM 7 seconds was 29 (28 cycles+first hit) hits to kill. Fortunately the devs later clarified that was a rough estimate for an overall firefight, where they were using cover and not hitting very much, but 2 seconds with 100% accuracy is still ridiculously long.

Of course, a bolter has a ridiculously low rate of fire and that is one thing that makes it hard to get the TTK down. A Bolter in Space Marine is often cited as firing at 240RPM, though I've heard they buffed the RoF after that figure was determined. That's 4 rounds per second, so a 2 second TTK is 9 rounds (assuming the first round doesn't count towards TTK, because it's already chambered). Even a three-shot kill would be a relatively long 0.5 second TTK with such a slow-firing weapon. That's why specifically for bolters, we're going to want a low round count not more than 5 (1 second).

Fun fact: anything below 210 RPM, statistically making it automatic is a waste of time because most people can click faster than that. 240 is actually still well within average range, you don't start pushing it towards the "pro click speed" end until 300+, the world record is 930 (theoretically that person could fire a semi-auto M16 as fast as a full-auto one).

So melee will be instant-kills? Maybe two swings at most? Otherwise, why would you ever bring thunder claws instead of a regular bolter?

The melee aspect complicates the TTK question.

Do you seriously expect to survive a hit by a anti-tank weapon!?

I don't know what guys like you want. One big malee-grinder with no ranged-weapons? >.>
WH40k (or a war-game in general) is not about charging everything head on with next to no consequences. If you want some form of tactical game, you must consider the guns as well as the swords/axes/what ever. If you could get into malee with a gunner, it should be a nearly guaranteed victory for you. But so should the gunner be victorious if he spots you soon enough and has good aim. If not, where is the point of having guns in the first place?

Well, there were some quoted dev comments pretty early on about some pretty fast killing.

And I'm sorry, but to me there is no compromise if I need nearly one full mag to kill someone. If my accuracy is pretty high. Even more so, if I think about the number of mags we will be carrying into battle. (about ~3-4 I guess?) It doesn't matter if the devs stated something like this. That's just nerfing the guns into oblivion and making EC some button-smashing console-game.
But hey, you quoted something about 2-seconds. That sounds quite ok and if Rasczak is right, about ~8 to 10 solid hits for a bolter-kill.

And, for me, your link posted about Brent Ellison doesn't work :c

A thunder hammer will probably have to be an instant-kill, since even taking one more swing with one of those would extend your TTK by a ludicrous amount. Others it will likely depend on their swing speed and the relative strength they're supposed to have, though really if you've got a one-handed weapon then you probably either have a shield to block some bullets for you, or a pistol to soften them up before you finish them off in melee.

As a rule of thumb though, yes melee will either have to kill in *very* few hits or have some kind of CC to disrupt their targets.

Ok first of all: "This is the sort of thing that I can guarantee is going to change over the course of development" don't take it like it was set in stone, what is ok now for the devs probably won't be acceptable in 6 months with more factions, classes and weapons implemented.

And i don't know how many shooters have you guys played but "In the game right now, the Time To Kill for a bolter versus another character in Power Armour is about 2 seconds (if all shots connect and there are no headshots)" this is a really long TTK, nobody, i repeat just in case, nobody has a 100% accuracy, my stats in PS2 (a first person shooter so i was way more accurate than i'm ever gonna be in EC) https://players.planetside2.com/#!/5428010618035865297/stats overall 19.52% accuracy in 9 months i played after release, if you go to the weapons tab you can see my accuracy with each weapon, around 20% with LMGs, 25%+ with assault rifles, 25%+ with SMGs and 50% with shotguns, so stop talking like the TTK is low, and every single one of you has 100% accuracy.