Round nose .25 slugs

Just curious if anyone has found a manufacturer that makes non HP slugs for target shooting? I just found those Altaros slugs. that’s exactly what I’m looking for except those are nearly 50gr. The BC (.21 G1) is double the NSA 34.9’s and 38.9’s I shoot. Realize the HP is why. That’s why I’m looking for non HP slugs less than or around 40gr.

I just don’t need HP’s for shooting on my property but I do enjoy shooting at longer distances. 

wouldn’t something like this be perfect for competitions that allow slugs? Must be some real challenges making a .25 round nose without making it 50gr.

if it was possible for say the Nielsen’s to manufacture would anyone else be interested in this?
 
I'm curious also, not doing much hunting or anything but would love to double the BC.

MP-Molds sells a round nose boat tail round in .25 caliber. It weights 47gr. It has drive bands that at .254 and seal the Lothar Walther grooves on their .25 barrel. But they need to be shot FAST in order to maintain accuracy and stability. What do you plan to shoot them from?