I ordered a new laser boresighter for my Savage model 99 in 300 Savage off ebay. It's a Sight Mark brand. The auction advertised it as being for 300 Savage caliber but when it arrived the package says .22-250. I know some of these work on multiple calibers. Does anyone know if this will work in 300 Savage cal before I open the package?
The SightMark website advertises the .22-250 model as: (Can be used with the following: 22-250 Remington, 22 Standard Varminter, 250/3000 Savage) but does not mention 300 Savage. Any thoughts?

Jim