Hi richard, ahh good you have the 4.5mm version so they will work fine for you just like in my video there.
This might shock you, my silver 1911 started its life the same colour as your remington, mine was the swiss arms p1911 until it got mirror polished and engraved, ive got quite a few guns but that is my pride and joy
Awesome your old job as a camera mate sounds cool, shame they would not let you fiddle with the guns off set, but like you say health and safety and all that, im lucky to be a member of firearms clubs too so i get to shoot all type of RS guns, but i love airguns and airsoft just as much to be honest, have best of both worlds i say..
Ill drop you a PM mate about the speed loaders now, but also if you have any questions about your gun or others etc, feel free to ask, am sure i can help as can many other people on the forum, wake a picture up of your gun as well, haha you can never see too many 1911's, even if we have seen them before..
Give me 20 minutes your have a PM im just sorting out dinner or the wife will beat me. lol..
ATB, Marc..