Powder Checks
RCM Laser Powder Check Pro V4 — 7" Integrated Screen
V4 laser powder check with integrated 7-inch screen. Full dashboard at the press — live readings, pass/fail indicators, no phone required.
From $799.99View productProfessional reloading sensors
Every charge checked. By laser.
Rock Canyon Munitions builds laser powder checks, bullet checks, and case sensors for Mark 7 and stand-alone presses. Tired of powder spills and stuck probes? Load with accurate, no-contact verification on every single round.
Micrometer-level accuracy Direct Mark 7 Autodrive integration Built by loaders, for loaders
New The Monthly Grain · No. 1 · September 2026 · Flat Prices, Missing Brands →A magazine from Rock Canyon MunitionsNo. 1 · September 2026
TheMonthlyGrain
The only monthly market report on reloading powder. Every price, every shelf, every maker — built from 1,066 live listings we check every morning, and written by people who load.
- RCM powder index
- 99.5Aug 2026 = 100
- Listings priced
- 1,066canister powder, daily
- Retailers read in full
- 4every morning
- Powders tracked
- 228merged burn-rate chart
In this issue
Flat Prices, Missing Brands
The index holds at 99.5. Seven price moves, all down. Three brands missing from the shelf.
Free to read. No load data, ever. One general edition and four cut by what you load — handgun, large handgun, small rifle, large rifle.
Why RCM
Stop spilling expensive powder
Probe-style sensors spill powder, throw false positives, and need a different probe for every cartridge. Our laser platform replaces all of it.
No-contact laser measurement
Lasers verify every powder charge without touching the case. No spills, no suction, no stuck probes — micrometer-level accuracy on every drop.
Stops the press automatically
Direct Mark 7 Autodrive integration halts the machine the moment a charge, bullet, or case is out of spec — before bad rounds stack up.
Round-by-round data
Live dashboards on-screen or over Wi-Fi. Charge trends, pass/fail logs, timestamped sessions, and CSV export for your QC records.
Powder Desk
Who has your powder today?
Look up any of 228 powders: what it is, which stores have it in stock, and what a pound really costs once hazmat and shipping are in. 413 listings in stock right now, checked every morning.
Loading today's powder prices and stock…
For Mark 7 owners
RCM Laser Powder Check vs. the Mark 7 PowderCheck
No probe, no spilled powder, no probe swaps between cartridges — and it stops the Autodrive automatically. We put both side by side, honestly, including where the factory sensor still wins.
Read the honest comparisonCartridge reference & Load Lab
Build the round before you load it
Every SAAMI dimension with its tolerance, a drawing generated from the numbers, pressure limits and case capacity by headstamp — then a Load Lab where you pick a real bullet, powder and charge and see the case fill and the trajectory before a single case goes through the press.
Featured
Precision sensors for high-volume reloading
Powder Checks
RCM Laser Powder Check Pro V3
V3 laser powder check with off-press laser centering fixture and centering dies (9mm, .223/5.56). For Mark 7 and stand-alone presses.
From $549.99View product
Bullet Checks
RCM Bullet Check Pro
Detects bullet presence AND correct seating height. Prevents thousands of rounds from seating-die walk.
$549.99View product
Bullet Checks
RCM Bullet Check Standard
Integrates with Mark 7 Autodrive at station 9 or 10. Detects bullet presence to stop the press on missed bullets.
$249.99View productDashboards
RCM Dashboard with 7" Screen
Sensor dashboard with 7-inch display. Supports up to 2 RCM sensors, CSV export, browser access over your network.
From $399.99View productIn the shop
Turn QC time into range time
From powder verification to our 250-round tray loader, every RCM product is designed, tested, and iterated on our own presses before it ever ships to yours.
See the machines runStay on target
The Monthly Grain, new sensors, subscriber deals — your pick
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Questions about your press setup?
Sensor compatibility, integrations, dealer inquiries — talk directly to the people who build these. We answer within one business day.
Contact us307-423-9296