Congrats! I'd love to have such 336 Model in 44 Mag! They were only made a couple of years to recollection. About same era as my own low production 336 in .219 Zipper . An era as Marlin seemed to be testing wings in new chamberings. I've also heard of feeding issues with the 44 Mag. But credibility? Handloading can be one source versus factory ammo! I suspect it was more the fact of factually slow sales that ended production. The 336 is a bit big/bulky in handgun chambering!

Some long time ago, I had a choice between the Marlin '94, "pre-safety" in either 44 Mag or 357 Mag. Chose the latter as .38 Spl ammo more available & less expensive. Standing by that choice today! What I term "historic Marlins" - as yours, quality guns!

Thanks for sharing!
Best & Stay Safe!
John