Looking to do my first custom LR build and looking for some advice. Hoping to end up with 1000 yd hammer at around 15 lbs all dressed out with a nightforce and bi pod. I have in my possession a stainless LH rem 700 in 300 RUM as my starting point. I am planning: 29-30" Lilja #6 or 7 barrel (fluted) CSR muscle brake Jewell trigger Nightforce scope / rings / base / ACI etc.... I already have selected a builder and have some guidance from builder, would like some more opinions. Questions: Most importantly, caliber. Thinking 338 edge, Lapua, or perhaps even staying with the 300 rum. The 338s are more than I need, but I would assume would give me a better barrel life with less over bore. Open to suggestions here, as long as brass forming is reasonable I may consider it. I will hand load whatever the final choice is. Stock: something in the $300-500 range. Nothing too pretty as I do not want to be scared to use the gun, would love a Russo, but I would be terrified every time it was out of the safe. Something reasonable to use in the field, prone, as well as from a bench, and something LH. I would like to keep repeater functionality, so bottom metal suggestions as well if needed. Probably leaning toward composite / laminate.