Ammo Tracker price index

Name: Ammo Tracker price index
Creator: Ammo Tracker

Monthly cost-per-round index across 6 calibers at covered retailers · base: October 2026 = 100 · not the whole market

Index, Oct 2026

100.0

October 2026 is the base month, so it reads 100 by construction. 6 of 6 basket calibers had data.

November so far: 103.5 (8 days)

Monthly value = average of the month's daily basket readings. A month is marked partial when fewer than 20 days had checks.

Small multiples, one axis each, so no caliber's line hides another's. Click a caliber for its full history.

Month	Index	Change	Calibers	Days with checks	Notes
Oct 2026 (base)	100.0	–	6 / 6	31

Before shipping, tax, and fees. Covered retailers only, not the whole market.

Basket: 9mm Luger, 5.56 NATO, .223 Remington, .22 LR, .308 Winchester, 12 gauge. Equal weight. Fixed until we publish a change.
Each day, each caliber's median in-stock cost per round at covered retailers is divided by its base-month median. The day's reading is the average of those ratios × 100.
A caliber with no successful check that day is left out of that day, and the day says so. A day with fewer than 4 calibers is dropped.
Monthly value = mean of the month's daily readings; under 20 days marks the month partial. A caliber that goes more than 7 days without a check is excluded from that month.
Before shipping, tax, and fees. Covered retailers only, not the whole market.
Base month: October 2026, the first full month of category checks.
Changes to the basket or base: none yet.