Good day.
I have owned a Dianna 48 for a few years and my fingers and thumb are kind of big to be able to place a pellet in the breach, easily.
I made a simple holder for the pellets.
If you wanted to make one for yourself this is all you would need.
1 ea. 1/4" x 3/8" x 5" Wood I used spruce because that is what I had about many thing would work.
1 ea. 1/8" dia. wood dowel about 3/4" long
1 ea. foam rubber with adhesive on one side. I used 1/8" thick and you'll need a piece about 3/8" square
I started by sharpening the end of a piece of hobby shop brass tube. I OD was just under the skirt dia. of the pellet you want to use.
I stuck this to one end of the wood stick.
I then drilled a 1/8" dia. hole, centered on the hole in the foam.
I cut the 1/8" dowel to length and files a taper on one end.
The 1/8" dowel needs to be a sliding fit into the wood but not loose.
That's it.
Hope it works for you.
Forgot to say, once the pellet is held in the loader, you line the pellet with the breach. Press the holder forward and then press the dowel forward with your thumb. Pellet is seated and no damage to the pellet.
Wish I could take a photo of it being used, but I can't load the pellet, hold the gun and take the photo all at once.