There are only a few cilinders that are really "bump resistant", Kaba and MCM among others.
Big names like EVVA, Assa, Dom and Mul-T-Lock open with no effort at all. (just some practice and the right bumpkey)
On www.toool.nl you can read the PDF on bumpkeys, and watch a video presentation on how it's done.
Read The PDF Whitepaper HERE
*Bump Keys are ON SALE*
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