Would like advice from .243 AR-10 owners! (First Build)

[B0bTheElephant]

As the title suggests, I'm building a large frame AR in .243. Not my first AR build, not my first experience with .243, but I know almost nothing about combining the two. Looking for as precise of a rig as I can without spending thousands, and I want to keep the weight to a minimum. Barrels and bolts are my biggest unknown, does anyone have any recommendations? Is it necessary/better to go with a barrel/ bolt combo? Do upper-to-lower receiver tolerances matter? Going to budget about $1500 to the build not including optics, and getting as many used or 2nd hand parts as possible, is this a reasonable budget? What about gas system considerations?
My ideal setup would be lightweight enough to hunt with, and able to compete in a gas gun PRS style series. Would like to shoot Berger 105s, but I'm not sure if OAL is too long for magazines. Any help from people who have built ARs in .243 would be greatly appreciated, thanks!

Also my first post ever, so if I am breaking any rules, please let me know! I tried to search for a similar thread to this one and I was unable to find one, if there is one already please link it and I will delete! Thanks again

 

[DRAM40A1]

I would strongly suggest 6 Creedmoor over 243 because of magazine constraints.

 

[DRAM40A1]

High pressure bolt, +2” gas system, adjustable gas block.

 

[B0bTheElephant]

High pressure bolt, +2” gas system, adjustable gas block.

Any barrel manufacturer you like best? I'm very particular to .243 because I have a massive bin of cases, bullets, and primers for it.

 

[Spblademaker]

@B0bTheElephant Thanks for not making your first post a Moa vs Mil post. ?. I get my bolts head spaced from whomever I get my barrels from. Makes my life easier.

 

[DRAM40A1]

Keystone Accuracy
Craddock Precision
White Oak
JP Enterprise

You might try a Wilson Combat for a budget build.

I had a DPMS 243 Light Hunter but it had a 10 twist for lighter bullets.