"That is funny because I have had dreadful experiences with Lil-Gun in .22 K Hornet, .30 Carbine, .357 Mag and .357 Max. I got bizar pressure spikes, up to 200 fps velocity variations from shot to shot and of course vertically strung groups." - coyotejoe
I have had the same experience with Lil'Gun in 2 different 22 Hornet rifles. 200 fps variation and awful groups. One round would be fine, the next a blown primer. I have heard that you can not get too much Lil'Gun in a case, just fill it up and compress your load with bullet seating. You will not get high pressures, basically you can not get enough Lil'Gun in a case to cause over pressure. That has not been my experience, even with minimum powder charges, I can get a blown primer. I have no explanation, just when run over a chronograph the results. I have tried it in a 221 Fireball too, without any blown primers, but still large variations in velocities from shot to shot and horrible accuracy.