I hate to malign anything, but Ram-Line magazines are notorious for being...Ram-Line magazines. On a Yahoo chat-group I joined when I purchased my Henry AR-7 (yes, I know it goes by the "Survival Arms" name, but I just can't bring myself to call it by that moniker), I've heard horror stories about how people bought hi-cap Ram-Line mags, only to have them burst apart at the seams...
So, yes - spooky stories abound for these items, but here's a caveat or two:
1) Note that 50-round rimfire mags are sometimes difficult to come by, and, last time I checked, Ram-Line was out of business (I'd love to know where you found Ram-Line magazines, though - if you could post the contact information, I'd be quite grateful). Oh, the point? You might wish to think twice before discarding any Ram-Line products, if there is limited chance of getting them back, since when they do work well, they seem to work quite well...
2) Having said that, Butler Creek seems to be the favourite for 10/22 high-capacity mags - so long as the magazines are steel-lipped. That's another caveat.
Having said all of that that, I have no personal experience with Ramline magazines, and so my comments about them are rather hearsay. The Butler Creek's I've seen and used have worked well and fed reliably (note: steel-lipped!), and if you can find high-capacity Butler's I recommend you grab them (they have their own loading system to facilitate quicker reload times). I believe the 25-rounders are not that difficult to find here.