I have owned many, but had to sell a collection of them last year, 22-250, 223, 222, 708, 3030, 308, 243, 6mm, and more.
I have one in 243 (my first deer rifle), and a 223 custom LeatherBuilt with Lilja barrel. The 788 rifle was a production rifle to capture those less wealthy folks who wanted a rifle to hunt with- turned out to be one of Remnigton's mistakes- made better and accuate than they expected, 9 locking lugs- not real smooth but very nice for the price- now the 788 has a following. The last pair I sold were mint and I sold way too cheap at $475 each.
ONLY problem ever to be had is my brother who received his the same time I received mine (1974 / $169 with 4x Banner)), broke his bolt. The main bolt body is drilled and the bolt lever is pressed into the drilled hole. Back in the lee loader days sizing brass was not possible without a press- hence only use the brass fired from that particular rifle. Well he broke off his bolt- so now when he comes back to TX he uses his old 788 but with my bolt since they are interchangable- angain the tolorences are not well machines apart from each other.
I bought another 788 for my brother a few years back- searched high and low for a 223- when I found one I bought it- nice- but the BAS%$!D had a 222 reamed out to a 223, restamped the barrel (not under the receiver) which was common after the splash the 223 stole from the 222, but as far as being a collectors piece - well it is just a shooter. That suits my brother just fine as would throw his rifle across a creek before crossing anyway.
I test fired 2- 22-250s in 788 as compared to the many current 22-250s- both held well- but just not as tight as a model target/varminter types. Both held MOA. Keep center. JHG