I think the .243 with factory ammo is to much gun (recoil) for a average 8 year old. If you can, put on a ;laminated short stock (shorter than a youth stock for him if the youth is to long,for jim, which it probably is. Laminated stocks are the heaviest, if no laminateds are available to gut down gut down a regular wood buttstock and add some weight to the stock bolt hole before putting the recoil pad back on. The Sims recoil pad on a laminated or wood is a good idea, adding one to a plastic stock is also good but I don't think it will help you son much since the stock is so light to begin with. If you get an old wood buttstock, remove the recoil pad or burr plate, drill 2 long holes into the stock from the rear, the part that goes against your shoulder, these holes should be either 1/4 or 3/8 " in diameter and at least 1 inch longer than the amount you are going to cut off, then gut off the proper amount using a chop saw or table saw holding the stock in the proper position with blocks or shims so you do not have to sand away a lot of material on the stock, then add the proper recoil pad to bring the completed stock length of pull to where you want it. Now you are all set to lengthen the stock easily and neatly as your child grows. When he needs an inch more or so of stock length just cut is from the piece you cut off and glue it back on the butt with proper diameter wooden dowels in the holes, the stock will line up perfectly!!, add the recoil pad to the no longer stock and your good to go until you have to add another amount...Goos Luck. Try to use an older wooden non-laminated stock for this if you can, they are a bit easier to work but its not really necessary, just don't use a Camo Laminated stock please!!! Trade it to me for any stock you want, I need one!!! Thanks....<><.... :grin: