The Studmagloader Speedloader s are great, especially given the “feeder” component which allows you to load the Speedloader. This is a game changer in .177, .22 and even .25. Yes, you do have to take one out to pin the magazine for the first shot, but the whole thing is MUCH faster than loading by hand. You only need 1 “feeder” for each caliber, then you can have as many loaders as you want, as the loaders are much less expensive that Imapct magazines.
For .30 cal I don’t find the need for the Studmag loader. The pellets in .30 are ;large enough that it’s easy to do it by hand. For those I use the Utah Air Dial type loaders. I load the speedloader by hand and store the pellets in it until I need to refill the magazine. Without some kind of easy to use feeder though, it takes as long to load the speedloader as it does to load the magazine, which is why I don’t use it for smaller calibers, and for something like .177, whether Crown/Dreamline/Wildcat/Maverick mags, or Impact mags, it would be just miserable to do by hand.
Now a combination of the two…that would be magic!