I happen to have a 257 R Winchester Featherweight lying around and two grandaughters who want to deer hunt. The older one is a little recoil shy, the younger one, well she woud pull the lanyard on a cannon. I also will shortly have a RCBS 257-120. I have IMR 4198, 4227, 3031 4064 and 4350 along with Rx7 and Green Dot and Blue Dot. Any ideas on a starting load 1200 to 1400 fps to a light deer load? Thanks