New JSB Heavy .22 needed

Given the power of many of the higher end PCP's, I think there's a place for a heavier JSB .22 diabolo pellet. I know they have the 25gr and the new 34 gr pellets, but they are not diabolo shaped. The 34gr is just too heavy for most .22 rifles and the 25gr isn't winning any accuracy contests. The next heaviest is the 18gr. Would love to see a 22 or 23 grain diabolo pellet from JSB. Anyone agree?
 
There are 21 gr and 28 gr 22 cal pellets. In order to get the weight up a standard diabolo shape will not work because it would have to be too wide. So length is the only way to go. I have had great results shooting the 28 gr Shenco New Boy heavy ammo in my Sumatra. The 34 gr beasts do not shoot well in it. My Sumatra can push the 34 gr well over 950 fps but they are not accurate. It may have something to do with the Sumatra's larger barrel but for whatever reason they shoot like poo in it.