I started shotguns at age 5 with a single shot 28 gauge.
I also had 28 ga slugs just like the adults did, used, and felled deer and other critters with .
See Ballistic Products for one, in regard to 28 ga slugs.
28 ga is .550 which is not far off the mark of .54, which is proven in war and meat hunting.
The highest scores on a tote board are those shot with a 28 ga. The gauge is better that it is supposed to be.
Will Fennell, myself and others will start a new shooter with a 28 ga, including kids.
I /we also use this to instill correct basic fundamentals for defensive shotgun use, and other uses as well.
So I agree with getting a 28 gauge as a first gun. I also suggest investing in a MEC 600 single stage reloader and reloading shells and slugs.
This is a special time for a special young man, and investing in him now will pay huge dividends in the future for not only him, yourself, also RKBA for us all.
A lot of adults do this, and end up getting themselves a 28 ga as well, including a single shot, not another platform.
I have rec'd a lot of PMs from adults and kids having a ball with this quality time due to the 28 ga.
There a number of adults that use single shot adults, including slugs, and have felled all sorts of game this year, including deer.
Some are members of THR.
*yep*