LegacySports is the importer of Howa and they sell the detachable magazine conversion.
I have experience with a heavy barrel Howa and it's a tack driver but it's also very heavy. I would not accurate hunting from an unsupported position due to the weight of the gun. I have no experience with the conversion kits.
Do most states have restrictions on the number of rounds loaded while hunting or is it just Maryland?
"Good people drink good beer."
Hunter S. Thompson
"Do stupid things, win stupid prizes"