I'm a primarily a Colt C&B shooter, but have and have worked on the NM Rem 44's quite a bit. I have simalar complaint about the grip shape of the Remington. I found the feel was improved for me by stripping the factory finish from the wood, then carefully thinning the wood by sanding (not disturbing the edges where wood-metal fit is affected), then apply an oil or varnish finish to suit your taste. This also allows me to operate the hammer with ease while maintaining my grip.
Regards,
Slim