FWIW, Ahlman's in Morristown, MN, converts Remingtn 740/742/7400 series autoloaders into pump action 760s. If you want to hunt with your Father's 243, the Ahlman's conversion might be a viable option for you. www.ahlmans.com
Have you had this done or seen one of the modified guns? Might want to consider it for my dad's 740. Thanks.