Hi Shane,
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Ah, now I see the source of your confusion! :)
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If my interpretation is correct, your addition to YFull is new and the tree structure hasn't caught up with your new test. It needs to wait until the next revision of the tree before your branch is fully added.
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We know that you and Bertram share heritage below R-FGC17465, so there should be some SNPs that you share. FTDNA have found several of these, and placed you in the existing haplogroup R-FGC17460, which includes several SNPs besides FGC17460 itself, all with A... FT... or FGC... names.
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My interpretation of what YFull is showing is that they have found a new SNP, Y340824, that exists in both your test and Bertram's test, but not in the two R-FGC17464 tests. If true, this would mean you are more closely related to Bertram, and that you belong to a new haplogroup (R-Y340824) that is more recent than R-FGC17460. However, Family Tree DNA have declined to call this SNP for reasons that are not currently clear. YBrowse shows the SNP at position chrY:16,987,621.
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It's possible for me, as an administrator for the YFull R-U106 group, to go into your test and Bertram's test and look at this SNP in detail. However, it might be best to wait until the YFull tree is properly updated before I do this - their updates aren't as regular as FTDNA's.
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Regarding TMRCAs, those at FTDNA will be considerably more accurate than what is shown at YFull, even if you have do share a SNP that FTDNA doesn't recognise. This is because FTDNA takes a lot more of the Y chromosome into account with the calculation, includes Y-STRs in their calculation and (crucially) has the much larger database of testers on which to base their estimates. So I would stick with the 200 BC +/- 400 years that FTDNA offers for your relationship with Bertram instead.
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Best wishes,
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Iain.
