I shot my 783 some today with some itty bitty 40 grain VMax bullets. It put 5 rounds into 3/4 of an inch. Running 3600 fps they are accomplishing pretty much the same as the bigger bullets in a .204.
However I am about to ditch the rifle. It seems the only way that you can get another magazine for a 223 is with another rifle. I have been on the quest for another magazine ever since I got the gun. I just sent my 3rd email in a year to Remington Customer Service Center. The first email they said they didn't offer them yet but would soon. They didn't answer the 2nd email. There website still doesn't offer them 2 years after they put them on the market. I googled Remington 783/ 223 magazine and while 50 vendors had mags for 308 short actions, 30-06 length medium actions and for Magnum actions. No one has them for the 223. I have a 783 in 243 and it has a completely different mag than the 223.
I am at wits end with Remington on this deal!!!!😠😞😭