https://www.midwayusa.com/product/1...-diameter-180-grain-flat-nose-box-of-100

This bullet has been in use for quite some time and is a good performer in the 35 Remington. It is also a lighter weight so recoil level might be a smidge better for your kids to use. The folks I know who also use 35 Remington for primitive weapons in Mississippi (I live in Mississippi as well) like this bullet.

I don’t use it now but have used it in a 10” Contender before and was pleased with accuracy and performance.