市販されるカスタムバッカーってノーマルだとA3を使っているから結構出力高い？
https://reverb.com/item/52255273-custom-bucker-handwound-butyrate-plain-enamel-brushed-nickel

Custom made to your specifications
Rough cast Alnico 3 magnet
Plain Enamel 42 AWG Elecktrisola Wire
Long leg Nickel/Silver Baseplate
1010 Steel Screws and slugs, nickel platted
Brushed nickel covers
Maple spacer
DCR : neck 8 kohms, Bridge 8.5 kohms
E to E spacing 49.2mm (Gibson Vintage)
Unpotted
2 screws and 2 springs per pickup
Cable length 35/38cm
Vintage braided 2 conductors cable