There is nothing in the book saying Semi-Automatic Burst represents pulling the trigger several times. In fact the words are contradictory as a burst is generally not semi-automatic - a burst is usually something continuous.
From Online Dictionary:a. The number of bullets fired from an automatic weapon by one pull of the trigger.b. A volley of bullets fired from an automatic weapon: The machine gunner fired a quick burst.
Semi-automatic is however defined as you say, with each squeeze firing one round - which is why 2 single shots could be as much semi-automatic as this weird 3-round burst.
I'm not sure if the writers of the book know what they are talking about at all - Why are some guns that you would think were semi-automatic only have single shot mode? Why is the combat shotgun defined as automatic, while it can only fire semi-auto, not full auto? Why can't the pump shotgun fire more than one shot per round if it is a pump shotgun?
The guns are not realistic of course.
Now if you would just have +10% for full auto with no chance of extra shots landing, why at all would you use that compared to single shot? That's why I offered a potential way to do it. It's not over complicated, there are 2 different versions of full auto and 2 of semi auto. I suppose you could eliminate the short wide burst for simplicity as you might as well go for autofire, but that was mainly to give an option to those using SA-only weapons.
Removing that it's no more complicated than what you suggested.
Haha! good point on the wide burst, I was so focused on being right that mistake went right over my head my bad man. maybe the difference would simply be degrees of success required for extra hits... I reckon that would make the most sense... so basically the wide burst we've been discussing would combine the best parts of all firing options but not overpowering it. It would have the +10 from single shot, the two degrees of success per extra hit of Semi-auto, and the prohibitive ammo cost of Full auto.
Also, I noticed that with the lasgun barrage talent and the fluid action weapons customization you are guaranteed an extra hit when using Semi-auto burst... just food for thought.
Well that's more like it. It does make a wide burst from Autofire be superior to SA fire in all situations where ammo conservation is not a priority though. I'm guessing short version would be unchanged, as in -10% and one hit per DoS?
Still, it would allow say an ork to blaze away and in most chances have a slim chance of landing 2 hits (9%) and ok chance of landing one. Since ammo conservation and calculating odds have never been a strong side of orks, that seems just fine to me
BTW I just noticed a typo I made in my own suggestion for long wide burst, I meant to have one extra hit per 2 DoS (otherwise it would be OP DH rule!), so this is pretty close. Reducing it to +10 and keeping SA as it is might just be ok.
I would consider why SA is inherently less accurate than FA burst (less chance to land multiple shots), but with these talents you mention it's suddenly easy to land all 3 shots, so maybe just leave it as is.
I will try to suggest this simplified version to my players, and see if they can live with it at least (they can simply not use it of course). It makes being shot at by multiple goons with Autoguns more dangerous (less likely to miss completely).
One potential issue is that this makes Single Shot less useful again - ammo conservation is the only benefit from it with these house rules, while with normal rules it always had an Edge with accuracy.
Yeah I share your concern with Single shot but think about most of the weapons that are single are either accurate (Long Las, Sniper Rifle) have a special quality (Shotguns that Scatter allowing for more hits in close range) or last resort weapons with low capacity (Stub Revolver, Black Powder, hand crossbow)
So from a strictly reload aspect low capacity weapons and single shot are almost necessary. Compare three pistols, Stub Revolver, Stub Automatic, Autopistol; the revolver can fire two bullets in 1 round with +10 each, the Stub Auto can fire 6 bullets in a round on SA, and the Autopistol can fire 12 bullets in a round on FA.
With both the Stub Auto and Autopistol you have three half actions worth of prolonged fire, (hell I just realized that with the ammo capacity the Autogun on FA you only have three half actions worth of prolonged fire) where as the revolver has six half actions of prolonged fire with a +10 to hit. Now obviously all of the pistols have the single option but this just serves as an example of how easy it is to burn through ammo on the other modes before you have to reload, assuming you have the requisite ammunition to reload... if you only have three reloads for each weapon Single is significantly more economical.
Luckily most of the weapons that use FA are high capacity Heavy weapons without Single as an option.
Despite only being a half action, you cannot by the normal rules repeat that action in the same round. So one only shot with SS, 3 with SA and max 10 with FA.
If SS mode could be done twice it would give it a serious power bost, as most cannot dodge the second shot. If you do the same with SA and FA they just become much better too, and dodge wouldn't be that good until you get Step Aside etc.