It seems my experience is a little different than some here. In my testing the 22 Monster Redesign had as good of bc as the King Heavies and very close to the 30 cal 50 gn. It was better than the Kings or 44 gn 30 cal. The 22 MRd's like the 970 to 980 area of velocity though. So this is my breakdown:
1. 30 cal 50 gn - most air use and most expense
2. 25 cal 33.4s- very high air use at 890-900 fps and high expense
3. 22 call 25.4s - high air use at 980 fps , a little less expense
4. 30 cal 44 gn - very high air use and high expense- best below 900
5. 25 cal 25.4s - much better air use and similar expense to the 22 MRd's - best below 900
6. 177 cal 16.1s - much less air use than the above and less expense than any of the above at 980 fps
7. 22 cal 18 gn - similar air use and expense to the 177, 16 gn, best below 900
Keep in mind... the top 3 are very close in bc so for me it's a matter of less air, noise, expense , and behavior. Fairly good jump to 4 in bc and by 7 it's a significant jump. Also, these aren't the only pellets so Baracudas , for instance, might fall in there within this list. I just don't have as many for significant testing and they haven't proven as accurate on the whole. Also keep in mind this is all testing with DS LW poly barrels. Others may yield different results. For instance, direct comparison of my Crown X in 25 cal w Kings to my DS Hp 25 w ART barrel yielded a significant (barely) difference in bc in favor of the ART but the King Heavies yielded a more significant difference in favor of the ART. To muddy the water a bit though , the Crown couldn't achieve the same power level so this has an effect as well.
So, everyone may have a different result or opinion , but these have led me to really enjoy the 177 w 16s out to about 75 yds virtually unmatched and my 22 w 25.4s beyond that. In comparing w a friends 30 cal EVOL w 50s , I actually had less wind hold at 220 and 289 in the same conditions but seem to remember he had more hits on the 289.
Bob