Yes LarryFox1, that's it.Thank you for the information too!

sabotloader it's here - http://www.chiefsproclean.com/.

I pinged the owner/inventer asking him what model to use for a White ML .504 sized barrel and he responded saying he didn't design one for it because White stated it's best to shoot them dirty, etc. So I was wondering if you folks heard of this cleaning tool, does it do what they claim it does, etc ...

thank you,
phil