Transfiguration is very similar to Old-Age Bond in terms of fire rate and overall impact. It's a great weapon for long range, but as usual with these types of rifles, it's not very good for close or mid range shooting.
This weapon has a Kill Clip perk that increases damage when reloading after a kill. You can also increase its stability, which is a very important stat for this type of weapon, by simply causing damage.
It is also recommended to fully empty the magazine while shooting and reload right after, which will result in faster reload speed.