I've modified several M788 triggers. O take them apart, d&T for a weight adjustment and a sear engagement screw then lightly hone the engagement surfaces. I've adjusted them down to 18 oz with complete reliability. It's not hard to do if you understand "triggernomitry" and have some skill with such tools.
I also thought the bolt handle problem was solved early on when Remington started using the same attachment process as on the M700. I've not seen a bolt handle come off one of the later ones at all. My M788 in .308W has been used in all sorts of cold weather down to sub 0 without problem. The barrel is about shot out though. I also disagree that the action stretches with the firing of full power loads. I've loaded amny a round using a Lee Target loader for both the M788 and my Target M70. Both require minimal FL sizing after 8-10 firings for easy chambering. This is with full power .308W jacketed bullet loads. I also never had any case stretch problems with the .222, several .223s, a 22-250 and a .243W I had.
Larry Gibson