Joe Wood is quite correct on the technical aspect.
My personal view on Ely cartridges is that they are noisy and 'sharp' in recoil. I don't like them and avoid them if at all possible in light game guns but I am sure they are fine in heavier tools. IMHO
Ely have gone the way of most cartridge manufacturers in chasing velocity as a selling point. I am sure they are well within the CIP spec but I find them harsh.
In the UK we have Hull cartridges which are a much smoother shooting cartridge probably as they promote pattern over velocity in most of the standard product.
Whether you can access this manufacturer and whether their US product is the same I don't know.
RST are excellent cartridges which are smooth and pleasant to shoot, I can't say I have any experience of the others.
