The Original RPG
Rim & Primer Gauge
Welcome to RHP
Welcome to Rabbit Hole Precision! Home of the world’s first rim thickness gauge for centerfire rifle cartridges. Looking for more consistent ignition from your precision handloads? Look no further than here to get the most consistent primer seating and accurate readings using our new “RPG” tool. Treat yourself to the finest rim & primer gauge ever made, give yourself that edge over the competition and Go for the Gold!
We are a small privately owned business located in Oconomowoc, Wisconsin and actively competitive in the F-Class community. We serve the needs of top benchrest, f-class, ELR & ULR shooters all over the world with our patented innovative designs and technology through extensive research and development: from the reloading bench to real-world application.
The Original RPG
The RPG is our bread and butter, and the first of all great things to come. This tool is the World’s First Rim Thickness Gauge for centerfire rifle cartridges. Using this tool to sort brass by rim thickness will allow you to get the most uniform primer seating you have ever experienced with using any micro adjust primer seater (handheld or benchtop).
With a simple switch of Adaptor Plates, the same tool can be used for precise measurements of: primer pocket depth, seated primer depth, rim-to-pocket depth, rim-to-seated-primer, primer height on granite surface plate, and firing pin protrusion.
There are 3 Types of Adapter Plates: Rim, Case Head, and Primer Plates. The Rim and Case Head Plates are specific in size to bolt face diameter, are sold in sets and available in 4 Sizes. The Primer Plates are needed for measuring seated primers, primer pocket depth, and more.
About Us
Our mission here at Rabbit Hole Precision is to create the most accurate, repeatable and efficient tools machined to the highest standards from the most premium materials that will offer the end user a true favorite tool.
There are still some holes in the market in the aspect of precision handloading that are areas that haven’t been developed or thought of yet. We believe that many manufacturers do not pursue certain areas that cater to a small clique market. We see that small clique market as our main customer base for all their highly specialized needs helping them get that final edge to becoming the next champion.
We watch what tools are on the market to see the pros & cons of all the different designs to improvise on what would be the most ideal design. From there, we get out our drawing board and get to work by testing different design ideas to find what will be the very best without going well beyond overboard on cost. Then put that idea into a prototype to start field testing it and making small changes & improvements to fine tune it into a work of art that will be simple & pleasurable to use.
We hope that you will enjoy a lifetime of use from our products and will allow us to serve you for all of your needs in the products that we have to offer.
Delivery & Returns
We have partnered with USPS and will provide a Tracking Number with every order.
It is the Customer’s Responsibility to order the correct size Adapter Plates.
Rabbit Hole Precision, LLC has a ZERO Return Policy. Defective units will be replaced.