Seating a primer is a small step, but it's one people care about. A primer that's seated inconsistently can cause problems. A separate priming tool lets you feel each primer seat, see the case clearly and work away from the press. This guide compares the main styles as equipment. It doesn't recommend any primer brand or type. Follow your published manual for components.
Why prime off the press?
- Feel: Many reloaders say they can feel a primer bottom out more clearly with a hand tool than with a long press lever.
- Workflow: You can prime in batches while watching TV or sitting at a table, rather than standing at the press.
- Inspection: It's easy to look at each case head after priming.
Progressive press owners usually prime on the press, which is fine. This guide is mostly for single-stage and turret users.
The main options
| Tool | Style | Shell holders | Notable feature | Price tier |
|---|---|---|---|---|
| RCBS Universal Hand Priming Tool | Handheld | Not needed (adjustable jaws) | One tool for many case heads | Mid-range |
| Lee Ergo Prime | Handheld | Lee shell holders | Low cost, simple | Budget |
| Frankford Arsenal Platinum Series Perfect Seat Hand Primer | Handheld | Uses its own system; check listing | Adjustable seating depth | Mid-range |
| Lee Auto Bench Prime | Bench-mounted | Lee shell holders | Lever action, less hand strain | Budget |
Details change between versions, so read the current listing for included parts and compatibility.
RCBS Universal Hand Priming Tool
The big idea here is that you don't need a shell holder at all. Adjustable jaws hold the case by its rim, so one tool covers many cartridges. RCBS includes primer handling parts for different primer sizes. Many reloaders like that it's one less thing to buy for each new cartridge.
Setup takes a minute when you change case sizes, and you'll want to read the instructions for the primer tray and feed. Once set, it's a smooth, straightforward tool.
Lee Ergo Prime
The Ergo Prime is Lee's handheld priming tool. It uses Lee's own shell holders (which are different from standard press shell holders), so check that you have or buy the right ones. It's one of the least expensive ways to start priming off the press.
Owners like the price and simplicity. As with any budget tool, follow the instructions carefully, especially for the primer tray, and keep it clean.
Frankford Arsenal Perfect Seat Hand Primer
Frankford Arsenal's Platinum Series Perfect Seat hand primer adds a depth adjustment, so you can set how far the tool pushes the primer. That's useful for reloaders who want very consistent seating and who measure their results.
It's a step up in price from the Lee. Read Frankford Arsenal's instructions for the depth setting carefully, and check results against your manual's guidance.
Lee Auto Bench Prime
If hand strength or comfort is an issue, a bench-mounted primer can help a lot. The Lee Auto Bench Prime bolts to the bench and uses a lever, so you're not squeezing a small handle hundreds of times. It uses Lee shell holders.
It's also a good option if you prime large batches and want a steady rhythm. You'll need a spot on the bench for it, and it should be anchored firmly.
Safety and good habits
Primers are the most sensitive component on your bench. Whatever tool you use:
- Wear safety glasses every time you prime.
- Never force a primer. If it won't seat, stop. Check the primer pocket and the tool setup.
- Keep primers in their original packaging until you load the tool.
- Clean up spilled primers immediately and never vacuum them.
- Follow the tool's manual for loading the primer tray and handling a jam.
Clean, consistent primer pockets help any tool work better. Our guide to primer pocket tools covers cleaners, uniformers and swagers. If you're building out a first bench, our starter equipment checklist shows where a priming tool fits.
Handling the primer tray
Most handheld tools use a tray that flips primers right side up and feeds them into a channel. Load the tray over a clean, uncluttered surface so a spill is easy to recover. Shake gently until the primers face the same way, then install the tray per the instructions. Keep the original packaging nearby so leftovers go straight back in.
If the feed jams, stop and follow the tool maker's steps rather than poking at it with a sharp tool. When you finish a session, empty the tray completely. A tool left loaded on a shelf is easy to forget.
Hand comfort over a long session
Priming a few hundred cases with a handheld tool can tire your hand. Switching hands, taking breaks and working in smaller batches all help. If you prime large batches regularly, or if your grip is weak or sore, a bench-mounted tool like the Lee Auto Bench Prime may suit you better than any handheld.
The picks
Whichever tool you pick, give it a few sessions before judging it. Priming tools have a feel, and most reloaders find their rhythm after a few hundred cases. If a tool still feels wrong after that, it's worth trying another style rather than forcing it.
Frequently asked questions
Is hand priming better than priming on the press?
Not always, but many reloaders prefer the feel and the ability to prime away from the press. On a progressive press, on-press priming is normal and fine.
Can I use my press shell holders in a Lee priming tool?
Lee's priming tools use their own shell holders. Check Lee's chart for the right one for each cartridge.
How do I know a primer is fully seated?
Follow your manual's guidance and the tool maker's instructions. Many reloaders check by feel, by eye and by running a fingertip across the case head.
What if a primer goes in sideways?
Stop. Don't keep pushing. Follow the tool's instructions for clearing it, and set the case aside to deal with carefully per your manual's guidance.
Which primers should I use?
The ones your current published manual lists for your load, exactly as written. We don't recommend components.
Do I need different parts for small and large primers?
Usually yes. Most priming tools use different punches or feed parts for small and large primers. Check that your tool includes both sizes, or order the one you need, and confirm the right size is installed before every batch.
Editorial note: This comparison is based on manufacturer information, retailer listings and published references. We haven't tested these tools hands-on for this article. Designs and prices change, so check the current listing before buying. We may earn a commission from qualifying purchases through links on this page.
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