I often fly small ships and even when i dont i tend towards hibrid ships. I am ever presently aware of how dangerous missiles can be. I fit a point defence on every ship and if i think i can get away with it i fit 2.
Now regular seekers, i can kind of deal with. My PD tend to do ok at stopping most of them getting thrugh and my resistances and MRP ususaly keep me going ok with a few malfunctions. Unless a few lucky shots get in and kills my PD or the fight goes on for a while and then i might loose one or two hard points.
But packhounds.. i just cant work out a way to overcome them. Even with 2 PDs they just decimate my modules. Even just one launcher on an enemy ship and im in touble the second my shilds drop.
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This whole thing confuses me. It does not match my experience.
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To understand where I am coming from: normal seekers have six times the health of a pack-hound. Seekers go for the target as fast as possible, so they minimize exposure time to PD. Pack-hounds have a somewhat slower base speed and their tumbling adds to the distance they have to travel. Thus they are exposed to PD longer. Also note that all testing indicates that their tumbling is not enough to noticeably reduce the PDs effectivity. The only thing actually speaking for pack-hounds here is that PD tends to slightly overkill. If some shots are already on way to a missile but it is not destroyed yet, the PD will still fire at it, even if the next projectile to impact will destroy it.
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So on the average, pack-hounds take more damage on the way to the target than regular seekers. The noticeable difference is the binary nature of single seekers. Either it impacts, or it is destroyed. So if PD has a 50% chance of destroying a single seeker at a certain range and position, it also destroys about 50% of all pack-hounds of one launcher. The damage reduction is about the same.
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The difference comes from different aspects. First, engineered effects. While seekers either hit or are destroyed and don't deliver a special effect at all, a single pack-hound making it to the target it enough to apply the special effect.
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The other thing is that pack-hounds indeed have a damage advantage over seekers. But that's not in their swarm nature, but in their reload/fire cycle. When firing a seeker and pack-hound in parallel, the seeker for the first six shots is on par with damage. Seekers just spit out one missile after another, while seekers go through their 1.5 seconds of firing and 3 seconds of reload cycle. Thus seekers actually even start out with a small advantage, then falls behind a tiny bit, but it's not a big deal. But after six shots, seekers have a much too long reload time, while pack-hounds just keep firing. That's where they develop their actual massive damage advantage.
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So yes, in many aspects pack-hounds are better. They don't have to wait to reload at the worst time. They have a higher chance to bring special effects of engineers on the target. But even in the best possible environment for them, that both ships are stationary, the percentage of damage delivered is not in their favor. And when shooting at a moving target, where projectile speed matters even more than in a stationary test setup, seekers fare better than pack-hounds, due to their better flight path and higher speed. Last not least, note that seekers have a bigger explosion radius. So when pack-hounds make it to your unshielded hull, their smaller explosion radius results in less systems taking damage. When a seeker actually makes it to your unshielded hull, it tends to apply more total damage to your ships systems, utilities and hardpoints.
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So all in all, I consider this a bit of a psychological thing. When fired at with pack-hounds, you are very likely to have part of them explode on your hull, even when your PD is working. When fired at with seekers, the chance to have an explosion on your hull is lower. Your PD might destroy it. And even if it happens, it is only one explosion. The higher number of explosions and the fact that it's very likely to have at least one or two missiles to reach you gives the impression of them being more powerful. But missile per missile (vs. sixpack of pack-hounds after sixpack of packhounds) seekers actually on the average bring you more damage. That is, until they have to reload and thus don't deal any damage for a much too long time.
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So really, pack-hounds have several advantages. As long as the target is not using PD, pack-hounds outperform seekers by far. Thus it's reasonable to pick them over normal seekers. But pack-hounds being more effective against PD is a myth. They actually do fare worse against PD than regular seekers.
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