I own one with redfield sights and it is extremely accurate. Problem with the 513T is their triggers can be lacking, luckily mine has about a 3lb pull. And from what I understand that trigger is difficult to work with for the average diy, requiring a gunsmith. Mine shoots submoa 10 shot groups at 50 and 100 yds. and always shoots good to 200 yds. My eyes are the problem now. Just find the ammo it likes. What it like at 25,or 50, it may not like at 100, but this is how you spend a whole day shooting and having fun.
The weight of this rifles average around 9lbs. This is the rifle I practice my off hand shooting with before hunting season every year since its hard to carry a bench with me.