I would recommend purchasing a Youth sized bolt action rifle, Rem 700 or a Howa/Vanguard, in .243 Winchester and let him shoot the heck out of it. As he gets older you, or he, can replace the stock with a quality full size one and have a great rifle to use the rest of his life and he will still know it is the one you gave him. He or you can have it rebarreled to any number of good short action cartridges later if desired.

I found a great Remington Stainless Youth Model 700 at Sportsman Warehouse (I think the stainless model is an exclusive for them) for one of my grandsons and it is a great little rifle. His is 7mm-08 but it was available in .243 also. Another grandson has a matched set of Weatherby Vanguard Youth rifles in .223 and 7mm-08, and he shoots the .223 for practice and hunts with the 7mm-08 with reduced loads.

For someone as young as 6 years old do not over gun him, a .223 Rem would be best but no larger than .243 to get him started.

Last edited by VaHunter; 04/27/16.