Ok, a little background, my daughter is extremely small but wanted her own center fire rifle. She is 20 years old. She bought a handi rifle youth model in 243 it fits her perfectly. I would have prefered a 223 but with H&R shutting down one was not to be found in our area. I shot her rifle with standard loaded 85 grain 243 and wow quite a bit of recoil in such a small light rifle. I layed in a stock of nosler 55gr bullets and have on hand quite a few powders to try. I do not have any trailbosss. I want to try SR4759 but can't find any info using the light bullet. Anyone done this before? thanks in advance for any help, Mike.