That's fine Kid, thanks. That will kill the mechbox pretty fast, and has good chances of chronying over 400fps (I think it was Droc that had a PDI 150% spring in his SR-16, it chronied around 425fps with 0.20g BBs. He left the spring in the full back position for a few weeks, and wasted a lot of ammo shooting it to get it to eventually drop down to around 400fps, some were a bit over, others a bit under. Field owners still had a problem with it, even though when I chronied 10 shots, the average was about 396fps, but because it chronied about 401-403fps every 6-7 shots, they made him use a velocity reducer, or semi only.) Case in point, talk our buddy into getting a Prometheus 110SP spring, that way he can both play under the limits as well as not have to worry as much about blowing his mechbox soon. And, know this, reinforced V2 mechboxes last longer than stock mechboxes, but will still break eventually (my G&P Hurricane mechbox in my MP5 with the 150% developed cracks mid-last year. I fixed the problem, but check it every so often.)
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