I've read from many that 75 yds is long range with PRB, though many others have said 125 yds is doable with a PRB on medium game. Most of this seemed to have been .50 or .54 cal.

I was hoping that I could do 100 yds, but after shooting at the 50 yd range I realize my eyesight has been degrading, and 75 yds would likely be my max unless I get glasses. And then I'm still not sure about how well a .50 cal PRB would hold up at 100 yds.

Then again, I began with a very skeptical view of a RB and felt the only good hunting projectile would be a conical or modern bullet. But after reading countless stories of passthroughs on deer and such with a PRB out to 100 yds and more I felt it was worth a try. Besides, most of our deer here in Texas aren't much bigger than a dog with long legs!