2/20/2023 0 Comments 50 bmg subsonic roundsThe momentum of a standard bullet is up there with hitting something with a baseball bat. However, there is a third stage of major noise:ġ) Uncorking (for which Silencers give their -4 Perception modifier)Ģ) Sonic Boom (n/a if using Subsonic ammo)ģ) Bullet impact - Decibel range up for debate depending on variables such as Ammo type, Calibre and Target.Įven a silenced pistol is going to make some noise if it hits a bottle or tin target.Īnd unlike the movies, most fleshy targets make a noise when shot, even mortally (unless it's lung, throat or head) Therefore, I've always assumed book ammunition to be subsonic, with zero sonic boom concerns. I'm with you, however I don't recall SR ever moving to the supersonic/subsonic ammunition debate (with appropriate perception modifiers) So use your judgement, the perception rules are written in a pretty loose manner so the GM can use them as the situation presents itself instead of having pages of situations and their appropriate modifiers. 50 cal rifle, well, even with a silencer it isn't silent. If that same rifle were a similarly equipped. 22 rifle, an observer could be straddling the barrel and likely not hear it. So if someone is firing a whisper quiet silenced. As a GM, it is perfectly within your remit to determine that a specific object behaves differently than another, especially when the rules don't say (which in this case they really don't). That sort of sound would also fall into the range of regular gunfire or shouting, so would have an easily attainable threshold of 1. There would be a rather loud crack that, if it is the same warehouse your mooks are in, wouldn't be so far away as to apply the distance penalty to perception checks. For one, a bullet going through concrete isn't quiet. While it is true that SR4 does not make much of a distinction between different sizes/calibers of firearms, there are some other things to consider with the example above. I did end up house-ruling that a shot can do up to the Modified Damage Value after soak, shooter's choice. We looked through the rules on damage and, apparently, there are no rules for purposely pulling a shot. She gets the drop on him as he is looking at the engine and wants to shoot to wound just enough to make it hurt (stun damage) because she still needed answers as to the number of people inside, etc. Outside the warehouse, the lone guard gets lured away from his post by the quintessential elf-damsel in distress "Oh, mister guard. 50 fitted with a silencer are equally difficult to hear? Did I miss something? Is it really the case that a. The mooks in the warehouse never heard anything. The rifle has been mod'd with a silencer (-4 to perception checks to notice the shot). So, the group sniper is in a warehouse and he fires a shot that penetrates Transparent Concrete (he rolled really well, something like 12 net hits on 20 dice). Note: I am trying not to house rule as much as possible. I recently started running my first SR4A game (yep, complete newbie to this system, not to RPGs or game mastering in general) and I had a couple of questions for those more familiar with this system.
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