trigger ID help

[cowboy717]

I've just picked up a Rem 700 SPS varmint in 243. Its in a bell and carlson stock, been recrowned, and an aftermarket trigger. I'm wondering if there is any way to figure out what it is? I haven't taken the gun apart yet as I picked it up on lunch on impulse, plus it was too good of a price to pass up.
Also what's a good load to start with? This is my first 243.
Thanks guys

 

[cowboy717]

Ok, feel like an idiot, with it written right on the side. Timney