"Trial and error...certainly not from advice from any of the sporter shooters that support a sporter class to bring in new shooters,,,, "
Don,
In almost every case when someone asked a sporter question, they are real disappointed with an honest answer. An example is will a factory(----) compete with the benchrest sporters out there? duhh-NO. That answer makes 'em mad and then they want to argue that ole Billy Joe Bim Bob has one that'll beat 'em all, and off it goes.
Truth is, in IR5050 and RBA there are sporters that'll shoot with or outshoot most big guns, if the shooter can see how to shoot 'em. There is a bunch of e'm out there too. The 6.5 power scope is the limiting factor.
What I stated above is the reason most folks won't go out on a limb and try and answer questions. It starts arguements, and nobody wins with those.
I'm game, what's your question? We need all the new shooters we can get!
If I can answer it I will, but I warn you, I don't know much.