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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

Permalink - Articles, Bullets, Brass, Ammo, Gear Review, Gunsmithing 2 Comments »
December 1st, 2019

Bargain Finder 219: Deals of the Week Cyber Monday Edition

Accurateshooter Bargain Finder Deals of Week
Accurateshooter Bargain Finder Deals of Week

At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.

1. Amazon — ADDTOP Power Bank with Solar Panels, $39.99

Power bank battery USB charger solar panels remote charging

Power — modern shooters need mobile battery power to run a LabRadar, charge a Tablet monitoring a Target Camera, or charge you smartphone running a Ballistics App. Here’s one of the best compact USB-port batteries you can buy. This offers 25000 mAh of energy, PLUS it has four solar panels (one built-in, three external). This ADDTOP Power Bank is on sale now for $39.99 on Amazon, a good deal.

2. Amazon — Samsung 10″ Galaxy Tab (Android OS), $147.00

Samsung Galaxy Tab 10

These days, every serious rifleman can really use a tablet computer. Use it with WiFi target-cam systems. Run Ballistics and Reloading Apps. And plug in a $49.99 Teslong endoscope to monitor your bore. This 10″ Samsung Galaxy Tab boasts a 2019 Android OS, long (13-hr) battery life, and easy MicroSD memory boosting. Right now this Samsung is on sale for $147.00 with Free Shipping, a great deal. Or order for $156.99 with 64GB MicroSD card (the BEST DEAL).

3. Cutting Edge Bullets — 25% Off $150+ Orders

Samsung Galaxy Tab 10

Cutting Edge Bullets crafts some of the best-performing projectiles for extreme long range (ELR) shooting. Cutting Edge Solids have set many records. And now you can get these great bullets for 25% OFF. But act soon. This deal is for TODAY ONLY, December 2, 2019. Use Code CYBER19 to get25% OFF all orders over $150.00, with FREE Shipping.

4. Brownells — Electronic Muffs, $24.99 (40% Off)

Brownells electronic premium muffs discount sale ear protection

Brownells new, Second Generation Premium Electronic Earmuffs incorporate dual microphones that let you hear range commmand while suppressing harmful noises. These affordable muffs fold for easy storage, and you can plug your smartphone into the 3.5mm input jack. Right now these muffs are discounted from $41.99 to $24.99 — a 40% savings!

5. Midsouth — Hornady 6.5 Creedmoor Brass and 140gr Bullets

hornady 6.5 creedmoor brass ELD bullets

Do you shoot a 6.5 Creedmoor? Well here’s the deal of the year on 6.5 Creedmoor brass and bullets. Get 100 pieces of Hornady 6.5mm Creedmoor Brass for just $34.99. Then add Hornady 6.5mm 140gr ELD Bullets at $64.99/250. That’s just $24.99 per 100, an awesome deal.

6. Multiple Vendors — LabRadar Chronograph, $499.95 ($60 OFF)

labradar midsouth brunos creedmoor sale chrongraph

The LabRadar is arguably the most sophisticated consumer chronograph on the market. These units rarely go on sale — but here’s your chance. Right now you can now get a LabRadar for $499.95 — that’s $60 off the normal price. (Sale price good through December 2, 2019). Purchase direct from Mylabradar.com, or order for $499.95 from leading vendors Midsouth Shooters, Bruno’s, and Creedmoor Sports.

7. EuroOptic — 15% OFF Nightforce NXS and SHV Scopes

eurooptic sale

Nightforce Optics makes great scopes for all disciplines. You’ll see Nightforces on the rifles of top benchrest, F-Class, and PRS/NRL competitors. Right now EuroOptic is running a big Nightforce promo. Save 15% on Nightforce NXS or SHV scopes. No rebate forms needed — the 15% savings is processed when you buy.

8. Powder Valley — Free HazMat Through 12/2/2019 — All Brands

Powder Valley Inc. Primers Free Hazmat Haz Mat shipping Cyber Sale Black Friday

Need powder and/or primers? Then head over to Powder Valley. Starting November 29, 2019 (this coming Friday), you can get FREE HazMat for all brands of reloading powders and primers with orders over $179.00. And yes you can combine powder and primers in the same shipment. This FREE HazMat offer runs through December 2, 2019. Go to PowderValleyInc.com and select FREE HazMat during checkout, starting Friday November 29th.

9. SIG Sauer — Huge Optics Sale, up to 60% Off

SIG Sauer electrooptics optics scope sale

Now through midnight December 2, 2019, save up to 60% on SIG Sauer riflescopes, red dot sights, rangefinders, binoculars and spotting scopes while supplies last. Choose from 58 different styles. There are some great deals to be had, with prices slashed up to 60%. But ACT SOON, this is a one-day-only sale!

10. Bushmaster Firearms — 50% Off Entire Site Today Only

area 419 sale

Bushmaster Firearms is running a big sale today with 50% Savings on uppers, lowers, muzzle brakes, mags, cleaning supplies and more. There are some truly impressive deals. But you better jump on it — the Sale ends 12/2/2019 at 11:59 pm EDT.

11. AREA 419 — CZ 457 MTR Fully Loaded, $950

area 419 sale

Tactical-style .22 LR rimfire rifles permit PRS/NRL shooters to cross-train effectively with low-cost ammo. The new CZ 527 MTR is a great platform for a rimfire precision custom. Area 419 has developed a cool 527 MTR-based rig with all the bells and whistles. Area 419’s fully loaded CZ 457 MTR comes complete with an ARCAlock rail, AREA 419 scope base, and Area 419 bolt knob. This is certainly a top choice for a sub-$1000, .22 LR PRS cross-trainer. Buy now and save $170.00.

12. Creedmoor Sports — $10 Off $150+ Orders and Ammo Sale

Cyber monday sale creedmoor sports .223 Rem ammo ammunition discount code

On Cyber Monday, Creedmoor Sports is offering $10 Off all orders over $150.00, with FREE Shipping. In addition, Creedmoor Sports has discounted its excellent 75gr .223 Rem Ammo. Get 50 rounds for just $30.00. That’s a 32.5% discount off the regular $39.75 price.

13. Midsouth Shooters — Aguila 9mm FMJ Ammo, $8.49 50rd Box

9mm luger 9x19mm pistol fmj handgun ammo ammunition

We bet most readers own at least one 9mm handgun. Here’s a killer deal on major-brand 9x19mm FMJ ammo — which is fine for general range use and training. The $8.49 price for 50 rounds works out to just seventeen cents ($0.17) per round. At that rate it’s not worth hand-loading, if you value your time at all. Act soon, this deal may expire on 12/2/2019 at 11:59 pm.

14. Palmetto State Armory — Taurus G2c 9mm Pistol, $179.99

Carry pistol $185 bargain Taurus G2C ccw handgun review discount sales

This is a good little compact carry gun at a great price. Palmetto State Armory has the black-on-black Taurus 9mm G2c for just $179.99. But it gets even better — with Taurus Factory Rebate your net cost is just $154.99! That’s one of the lowest prices we’ve ever seen for a big name, reliable 9mm handgun. Buy soon before the Rebate Offer expires.

15. Amazon — Jialitte Scope Bubble Level, $10.99

Scope Optic bubble level 30mm 1

All serious rifle shooters need a scope level. This nicely designed Jialitte Scope Bubble Level features a 30mm milled inside diameter, plus an inner insert ring so it will also fit 1″-diameter main tubes — that dual-diameter versatility is a nice feature. We also like the way the unit is nicely radiused, and has a low profile in the middle. Price is just $10.99 with free shipping. User reviews have been very positive. You could easily pay $35.00 or more for a 30mm scope level.

Permalink Bullets, Brass, Ammo, Hot Deals, Optics, Reloading, Tactical No Comments »
December 1st, 2019

Common Misconceptions about Twist Rate and Stabilization

FirearmsID.com barrel rifling diagram

Understanding Twist: Bullet Stabilization

by Sierra Bullets Ballistic Technician Paul Box for Sierra Bullets Blog.

Based on the questions we get on a daily basis on our 800 (Customer Support) line, twist is one of the most misunderstood subjects in the gun field. So let’s look deeper into this mystery and get a better understanding of what twist really means.

When you see the term 1:14″ (1-14) or 1:9″ twist, just exactly what does this mean? A rifle having a 1:14″ twist means the bullet will rotate one complete revolution every fourteen inches of the barrel. Naturally a 1:9″ turns one time every nine inches that it travels down the barrel. Now, here’s something that some people have trouble with. I’ve had calls from shooters thinking that a 1:14″ twist was faster than a 1:9″ because the number was higher with the 1:14″. The easiest way to remember this is the higher the number, the slower the twist rate is.

Now, the biggest misconception is that if a shooter has a .223 with a 1:8″ twist, his rifle won’t stabilize a 55gr bullet or anything lighter. So let’s look at what is required. The longer a bullet is for its diameter, the faster the twist has to be to stabilize it. In the case of the .223 with a 1:8″ twist, this was designed to stabilize 80gr bullets in this diameter. In truth the opposite is true. A 1:8″ will spin a 55gr faster than what is required in order to stabilize that length of bullet. If you have a bullet with good concentricity in its jacket, over-spinning it will not [normally] hurt its accuracy potential. [Editor’s Note: In addition, the faster twist rate will not, normally, decrease velocity significantly. That’s been confirmed by testing done by Bryan Litz’s Applied Ballistics Labs. There may be some minor speed loss.]

FirearmsID.com barrel rifling diagram
Many barrel-makers mark the twist rate and bore dimensions on their barrel blanks.

Think of it like tires on your truck. If you have a new set of tires put on your truck, and they balance them proper at the tire shop, you can drive down a street in town at 35 MPH and they spin perfect. You can get out on the highway and drive 65 MPH and they still spin perfect. A bullet acts the same way.

Once I loaded some 35gr HP bullets in a 22-250 Ackley with a 1:8″ twist. After putting three shots down range, the average velocity was 4584 FPS with an RPM level of 412,560. The group measured .750″ at 100 yards. This is a clear example that it is hard to over-stabilize a good bullet.

Twist-rate illustration by Erik Dahlberg courtesy FireArmsID.com. Krieger barrel photo courtesy GS Arizona.
Permalink - Articles, Bullets, Brass, Ammo 3 Comments »