The different adapatators for dimple key are not pretty good on some cylinder. If you have to open cylinder with large keyway without anti picking device it's ok. But some cylinder could not be open yet. I know that because i sold this kind of pick gun few years ago. You could open cylinder like Keso for example but since 8 years approximatly they include serrated pins.
First problem: maybe you can open some by chance but the other you can't.
Second problem : as writte dmux you can damage the keyway. The key can't go pretty good in the lock.
Third problem : if the blade does a rotative movement you can bang the pin and do a scratch. The pin can't go in is chamber pretty good. You can damage the spring too because they are shorter.
Fourth problem : the sucess depends of the keyway. For example the Cisa Astral could be picked few years ago with this kind of pick gun but the new generation can't any more (except maybe by chance).
I thinck the better is to pick only simple locks with pick gun.
Sorry for my english i don't use any translater.
regards