Have been getting a few whispers about this so sharing my current attempt to push PotCG BS as far as it can go. Currently at lvl 95 with 9+k life, 1.6+k str, and around 7-9M conservative dps. The clear is great and I've been doing some Tropical Island Zana Delirium farming quite smoothly with it. Bossing is mediocre as it's still a melee strike skill but at least the tankiness allows for some mistakes if you are a bad mechanic player like me.

Boneshatter really needs some investment in stun duration to feel good so frankly PotCG needs a lot of help there since you are not taking the stun nodes on the tree (inefficient). However, a combination of the enchant, BS quality, ECoMS, and anomalous Ruthless gives 100% increased stun duration, which feels good enough to use. I have another 20% from the Lethal Pride as well. The stun pulses appears to chain, which results in a satisfying boom at each pack.

For the gearing choices, to move beyond the usual Iron Fortress, Abyssus, Astramentis, I've gone with the following:

• Helmet - The Elevated Warlord accuracy mod is absolutely incredible, adding 160% crit chance and around 30% IAS from the accuracy. Elevated Elder Phys dmg taken is also a no brainer. This results in just slightly less dps then Abyssus, but Abyssus felt way too sketchy in high reds.
• Chest: Elevated Str does a bit more on this then usual as BS's flat phys scales nicely with level. Attack Crit since PotCG has low base crit.
• Gloves - For a long while I used a inc str implicit synth glove and just gem swapped with ancestral call. But +2 strike gloves is just a bit more convenient though less str.
• Rings - For curses, and to fill out resist and str where possible.
• Amulet - Astramentis is frankly a really good option that's hard to beat but I managed to get mine for cheap
• Belt - Syth Strength is hard to beat. Mine still needs recrafting.
• Boots - In theory, an elevated tailwind with elevated str boots would probably be BIS but they are both untagged hunter mods so no idea how to realistically craft them. In the meantime, a +1 EC Alberon is pretty darn good.

Some other "min-max" choices: pathing for split personalities, Phan Vengeance for rage, AS enchant for PotCG, double pride (+impale too expensive). I would really like to have more crit multi, but having a tough time fitting it in (Inc Crit Dmg is same dps as the current gems and ups the int req). Happy to hear tips on other ways to improve.

Overall as someone who likes true melee, Boneshatter has been a great hit with me.

POB: https://pastebin.com/k7j52iEv (Accidently left Vaal AW on, should be 8.2M DPS instead with 7 trauma stacks. POB also doesn't show the LL accurately. I have 9.2k life now. )