December 1st, 2019

Sunday GunDay: Dennis Builds an Eliseo Tubegun Palma Rig

Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals

Our friend Dennis Santiago is a talented Service Rifle shooter, who normally competes with an AR shooting the .223 Rem cartridge. Recently he decided to go over to the “dark side”, putting together a Palma (fullbore) rifle chambered for the .308 Winchester. Dennis selected a Competition Machine (Gary Eliseo) R1 Chassis for the project. Here’s Santiago’s account of his “true blue” Palma build…

Palma Rifle Report by Dennis Santiago
“Here’s my new project — a .308 Win Palma rifle with an Eliseo R1 chassis, Rem 700 action (blue-printed with PT&G upgrades), Jewell trigger, Boots Obermeyer 1:11″-twist barrel, and Phoenix sights holding Gehmann apertures. Next comes chassis and sling set-up, initial mechanical zeroing, and load development. Yup, I have a bunch of Peterson small primer .308 brass, Sierra #2156 155gr MKs, and Varget to get started with. I’m told I can drive 155gr pills to stay supersonic to 1K. Should make for an interesting 2020. My goal is to be cozy with this blue beast by the time the Berger Southwest Nationals kick off in February 2020. Hey, you gotta have goals!”

Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals

Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals
CLICK Image for full-screen photo with more detail.

Pinning the Picatinny — For a Super-Solid Mount
Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals

One of the key parts of the build, Dennis explains, is mounting the top rail with pins: “Once the rail is aligned using a spin-centered optic, it locks down with three 3/16″ roll pins. That way there is no reliance on screws that can come loose. Above is a photo of the top of the Eliseo tube chassis showing the three, 3/16″ roll pins that unitize the Picatinny rail. You can also see the four brass screws that just kiss the action to fully stabilize it in the tube. The recoil ring buttresses completely around the action with metal to metal contact. There are a million details hidden inside a Gary gun.”

Phoenix Sights Front and Rear
Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals

Rise of the Phoenix — Here are the sights for the Eliseo R1. There are very few manufacturers left making these kinds of ultra-precise and repeatable iron sights.

Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals

These Ray-Vin tools help set mechanical zero on the sights. Dennis notes: “Finally a reason to pull out the Ray-Vin calibration paraphernalia to set up a mechanical zero. This photo is for all of you who still remember that those barrel flats and screws in our sight towers actually had a purpose once upon a time.”

Sling ‘N Irons — Classic Palma Configuration
Dennis Santiago Eliseo Competition Machine Tubegun Chassis .308 Win Rifle Berger Southwest Nationals
Dennis plans to use an Eric Hollis sling with his new blue Palma rifle.

Peterson Small Primer .308 Win Brass for Santiago’s Rig
Berger southwest SW Nationals

Dennis plans to use Peterson Cartridge Small Rifle primer .308 Win brass. Peterson offers a “Select” version weight-sorted and length-sorted at the factory. All Select casings (in a 50ct box) are guaranteed to be within 1 grain in weight and .001″ in OAL. Peterson Select brass is available for 20 different cartridge types, including .308 Win both small primer/small flash hole and large primer/large flash hole.

Getting the Blue Rifle Ready for the 2020 Berger SW Nationals

Berger southwest SW Nationals

Dennis plans to campaign his rifle at the 2020 Berger Southwest Nationals (SWN). He may shoot iron sights, or fit a scope and shoot in the “Any Sights” category. That’s not yet decided. The week-long Berger SWN is the biggest rifle match in the Western United States. Hundreds of shooters compete in both individual and team events. The SWN begins with the Mid-Range Nationals at 600 yards. Then the Long-Range matches are held, with targets out to 1000 yards. Watch the video to see the Ben Avery facility, home of the Berger SWN:

Chassis-maker Gary Elesio at the 2017 Berger SW Nationals. Gary shoots what he sells:

Gary Eliseo Chassis Dennis Santiago Palma .308 Win

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