I think a lot of folks have bought into too much hype about spring power and the single spring Redhawk design.
I've tuned dozens on dozens of Redhawk's for customers over the years, and have NEVER found myself unable to produce reliable ignition with the lightest Wolff spring from their kit. Yes, you'll need to do a little polishing and truing, and yes, whoever does the work inside will need to fully understand, intimately, the design and operation, but given these criteria are satisfied, there's really no need for the Bowen extended pin. I've installed them, and they are a nice feature - especially so for the new rear-entry Redhawk's - but they really aren't a necessary item.
In 100% of cases I have seen firsthand, if you have ignition problems with the lightest mainspring, then there is one of a handful of OTHER fitment issues going on inside, which have nothing to do with the sping itself. But there's no reason to over-spring a revolver to make up for production fitment shortcomings - fix the actual fitment problem and you'll be fine.