I've been using something like this but focused more on arcane. It would work well with Tonitrus which has high strength scaling. As for the hunter tools/artifiacts they aren't amazing but I've found some uses for them.
The bone is kinda cool. It improves your dodge briefly at the cost of a lot of bullets. I have heard high arcane extends the duration but that might be bullshit?
Haven't tried the choir bell - it apparently heals your summoned guys. No idea for how much. Doesn't work when solo at all, it's greyed out.
The damage-dealing ones just seem to do pitiful amounts of damage even with high arcane. I haven't reached 40 yet so I can't use the final tool but the others didn't do much. Executioners' gloves were still useful in NG - I could two-shot those brain things for 3 bullets each. Tiny Tonitrus was alright in a couple situations, namely a boss that swarms you with small bolt-weak enemies. But in later chalice dungeons or NG+ I can't see these being useful - the second enemy I ran across in NG+ seemed to have over 1200 hp. Tentacle face item was hitting things for like 190, not even worth using.
Beast roar is situational. I've had success with it on enemy hunters or getting dogs off of me. Now that I think about it, I bet it'd be nice for spider swarms summoned by those bell bitches in chalice dungeons.
The empty shell adds a flat 80 damage to your weapon and is reusable - also looks cool. Problem is it won't work on elemental weapons or mixed weapons like Tonitrus. Doesn't scale with arcane either, so going past the 15 you need to use it won't help.
Not an artifact but I found an 'arcane sprayer' gun near the end of the game called Rosmarinus. It seems to do pretty great damage at +8 and doesn't eat bullets all that fast. I could see this coming in handy.