There is really no reason for any new cartridges as what we have now will due anything we need to do. Infact there is so much over lap in rounds that we have several that are so close any 1 of them would interchange with many other. A difference 0f 100 fps is a difference of 5 yrds in max. point blank range, apx. 500 fps would only be 25 yrds., and the target will not be able to tell the difference in valocity,
so why do we have they all???? Because it is easy to prove that 1 has so definate advantages on paper, it just becomes imposible in the field. AND, even though I know and understand this well I am still an aviod wildcatter. I at present have a .17 AH as my smallest and a .411 Hawk as my largest wildcats. At present I have wildcats in .17, .22, 6mm, .25 and .411 cals. It`s just human nature to want something no one else has.