The 788 was Remington's "Entry Level" rifle, began and ended during 700 production.
The receiver was pretty sturdy, and it had a very short lock time.
These rifles were astoundingly accurate for their price.
I have owned a number of them over the years, and all were very accurate rifles.
Timney made a replacement trigger for them, it may still be available.
The rear locking lug arrangement made hot handloads harder on brass, but I never heard of them setting back under hard use.
The receiver threads are different than are the 721, 722, 700, 600 and 660 series of rifles, so barrels from any of those do not fit.
FWIW, the 541/581/591 series rimfires use a smaller version of the 788 action, and are renowned for their accuracy.
The bolt release is on the safety. [Push forward to slide bolt out]
Regards, Dave