I can't speak to Bergara rifles because I've never shot one and know no one who owns one. I've handled one of the B14s... it was ok.
I'd just like to offer that, at the price point of the LRP 2.0, you can pick up a Tikka T3X TAC-A1, which I have owned (along with a T3X Varmint in .223) and used a year and a half in PRS matches. The TAC-A1 ships with 2 10-round mags (LRP ships with a 5-rounder) , a picatinney rail (LRP has no rail), and a brake (LRP has no brake).
So the ONLY thing the LRP 2.0 has going for it from what I can see compared to the TAC-A1 is being an R700 clone. The TAC A1 action was as smooth and the rifle pretty much as accurate as any of my customs; I moved up because I could and wanted to, not because the Tikka had problems.
(Full disclosure: Tikka T3X barrels are known to be a bit "slower" than most competitors' (factory, custom) barrels, and the rail is flat - but I can tell you from experience you'll have ample accuracy to the limit of 6.5CM cartridge capability, and any decent scope will let you dial to 1000 yards or more with 6.5CM despite the flat rail.)
Regarding a rifle in 300 PRC: if you have an itch only a magnum will scratch, go for it. The cartridge was developed with 2000-yard velocity/accuracy in mind. Some compare it to the .300 WinMag.... uh, yeah, they both shoot 30-caliber bullets, but the WinMag case's curiously short neck and old-school belt present some challenges for extracting top-shelf accuracy - and even without the case's old design, the throat has to be lengthened beyond SAAMI spec to properly utilize serious match bullets for which the PRC was designed. You wouldn't be able to load heavy match bullets out long enough in a factory rifle to best utilize powder capacity.
I digress. I wanted a 300 PRC too, after I joined a facility with a 1-mile range. But, for once, the brain won out over the itch. The PRC takes almost double the 6.5CM's powder charge. Bullets are over 50% heavier than 6.5CM. Thus, ammo costs far more. With enough weight and a GOOD brake, recoil is manageable but blast is appropriately magnum-sized, and no one will want to share a covered firing line with you if they have the ability to move away.
The final factor for me, aside from ammo cost and blast considerations, is that I very much enjoy PRS-style competition, and no one in their right mind would shoot a .300PRC in those matches... and I have no desire to go down the ELR rabbit hole at this point. So, the only reason I had for the PRC would be to ding a steel plate 1,760 yards away more authoritatively than I could with the 6.5CM. So I built another .223 instead, nearly identical to my primary 6.5CM. It has become my most-used centerfire rifle; relatively cheap to handload, light recoil, and ample accuracy to make head shots on standard IPSC plates out to 700 yards and body hits past 1000 (of course, wind plays havoc with lighter bullets).
Which leaves the RPR on which to comment. As has been said in this thread, it is a capable if relatively roughly-machined platform. Compared to a Tikka, running an RPR bolt feels like dragging a crowbar claw across a cinder block. But they'll usually shoot fine, and the price of entry is low.
One other thing: It is the RARE brick&mortar gunshop whose staff has worthwhile knowledge of precision rifle (or, all too often, anything much else). I have a fairly good shop not far away, but, while their precision rifle selection tops out with Tikka T3Xs and Bergara (not bad), not a soul in that store has ever shot a PRS match or even serious 500-or-more-yard playtime. And this is a dedicated GUN store with forty-leven flavors of AR, AK, Glock, S&W, and the like. I shudder to think what "advice" would come out of a sells-clothing-shoes-fishpoles-tents-cookwear-you-name-it-oh-and-guns store.
Fwiw.