Armorer Leveling Guide
The 140 Armorer leves in this guide sit on 35 level rungs between Lv 1 and Lv 98, issued at 14 camps. Limsa Lominsa is the fixed point — it issues on every rung up to Lv 45 while the second issuer rotates through the field camps — and from Lv 50 up each rung has exactly one.
The best EXP per allowance on a rung climbs from 1,690 at Lv 1 to 3,459,540 at Lv 98, but the climb is not steady: 10 rungs pay less than the rung below, the worst being Lv 80 at 935,000, down 45% on Lv 78.
Picking within a rung can matter more than which rung you are on: at Lv 58 the 6 leves on the board pay between 15,742 and 811,360 EXP for the same single allowance, a gap of 51.5×.
32 of the 140 carry a repeat count of 2, and they pay less per turn-in than the one-shot leve beside them on 20 of the 21 rungs offering both. Counted as 6 turn-ins for a single allowance — the count is in the data, reading it as 6 deliveries is this site's assumption — the repeatable leve is still the better use of that allowance at 20 of those 21 rungs; take the one-shot at Lv 58.
Take the best leve on each of the 35 rungs and the Armorer ladder is worth 32,784,720 EXP for 35 allowances — 7th of the 8 crafting guides, 16% behind Weaver.