You may already have this information, but I am providing a link to a site you will likely want to become familiar with just in case. Before following anyone else's bullet recommendation, first check to see how the bullet in question is likely to perform in YOUR barrel, and always, always consider the altitude where you are shooting. Temp, altitude, and humidity all combine to make the air more or less dense in YOUR shooting environment, and this effects stability and accuracy.

http://www.bergerbullets.com/twist-rate-calculator/

Also important is rotational speed. The formula to use is Velocity (fps) X 720 divided by twist (inches per one revolution in your barrel, in your case 8)
Example: 3200 X 720 / 8 = 288,000 RPM. This will at or beyond rated RPM for Hornaday bullets. Sierra's are generally good to 320,000 rpm, but you can consult the manufacture for their data. Push that 50 grain bullet to 3500 fps and you'll likely see a "POOF" as it spins apart before it hits the target.

Good luck and write back with your results. We're always ready to help.