The Jewell is as good as any for bump fire, it's just that guys set them so low for bench use they're not safe in a hunting rifle. an allen wrench fixes that.
My McWhorter came with a Jewell in it and it is set so light and crisp if you go past feeling the trigger on your finger it's gone. concerned about bump fire I took the safety off and banged it around until I was worried I'd damage the gun and it never fired.
This is a hunting gun but only in a long range I have some time sort of way so I'm okay with it. on my other guns I run them at about 1 lb, you can touch the trigger without firing the gun that way and it's worked well for me.
I'm not saying you need a Jewell, I'm just saying you'd love one if you had it.
Stay thirsty my friends