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March 23rd, 2013

PMA Tool Now Carries High-Quality Bob Pastor Barrel Vise

PMA ToolIf you do home gunsmithing or swap barrels frequently, you need a good barrel vise. PMA Tool is now carrying a quality 6061 Aluminum barrel vise, with spring-loaded clamps and a durable, baked-on powdercoat finish.

PMA’s Pat Reagin tells us: “These Deluxe Barrel Vises are made by our friend Bob ‘The Viper’ Pastor. Bob’s barrel vises feature hardened bolts and nuts along with fully-captured return springs. The return springs prevent the top of the vise from flopping around, making inserting and removing barrels from the vise much quicker and easier.” This feature, along with the non-slip powdercoat finish, protects your barrels from scratches and, importantly, protects the crown of the muzzle. Pat says: “You will not find a higher quality barrel vise with these features anywhere.” Price for the Pastor barrel vise, machined from 6061 Aluminum, is $60.95. CLICK HERE to order.

PMA Tool barrel vise Pastor Viper

Product tip by EdLongrange. We welcome reader submissions.
Permalink Gunsmithing, New Product 1 Comment »
March 14th, 2013

Monster BAT Discovered at Bruno’s

BAT .50 BMG — Now That’s an Action!, by GAS
A while back, I stopped into Bruno Shooters Supply for a jug of powder and looked into the display case where the new actions are kept. Amid the usual array of BAT Machine, Stolle and other actions, there was something unlike any action I’d seen before — all I can call it is the BIG BAT. I wasn’t too surprised at the weight (a beefy 13.7 lbs.), but until you lift it it’s hard to appreciate how solid, chunky, hefty, massive (pick your favorite adjective) this thing really is. The action is a 2.5″-diameter, 12″-long BAT for the .50 BMG cartridge. It is simply the biggest, slickest custom action on the planet. In order to give you some sense of scale, I photographed the action alongside a conventional BAT action for short-range Benchrest shooting and I put a .220 Russian case and a .30-06 case into the picture. I’ve handled and fired other .50 BMG actions/rifles before, but this BAT puts them all to shame, as far as fit and finish go.

BAT 50 BMG Action

BAT 50 BMG Action

The action is actually quite conventional in design and execution. The bolt is fluted and has two front lugs with a conventional, although super-sized, firing pin assembly. Any Remington-style trigger will mount by way of a normal trigger hanger, allowing for simplified maintenance or replacement in the field. The loading port is 5.5″ long and the barrel threads are 1.5″ x 16 tpi — nothing about this beast is small! There is a conventional rocker-type bolt release on the left side of the receiver body and a recoil lug is built into the bottom of the receiver. In reality, the action is very similar to any other BAT except for the size and it adheres to all of BAT’s high standards for quality of design, manufacture, fit, finish and just plain good looks. Slide that bolt back and it feels as tight as a small Benchrest action!

Given the BIG BAT’s $3,285.00 sticker price (2011 pricing), not many of us will ever have the opportunity to own or shoot one of these beauties (I certainly won’t). However, it is nice to know they exist and can be bought and enjoyed in many places.

BAT 50 BMG Action

Permalink Gunsmithing, New Product 7 Comments »
March 2nd, 2013

MidwayUSA Videos Show How to Finish a Hardwood Stock

In a series of YouTube videos, Larry Potterfield of MidwayUSA shows how to prepare, finish, and polish a wood gunstock. The first video covers sanding, sealing, and filling. The second video shows how to apply a multi-coat finish by hand, with light sanding between coats. In the third video, Larry applies a final polish to his project stock. The principles illustrated in these videos can be applied to most types of stocks. However, keep in mind that Larry is working with a hardwood stock.

By contrast, with a typical Rutland laminated stock, the finishing process is somewhat different and (usually) more time consuming. You’ll probably have to do more aggressive sanding, and the sealing process can be more time-consuming because laminates typically have very porous surfaces that soak up a lot of sealant. You may have to do multiple sealant passes with aggressive sanding in-between. Alternatively, you can use multiple coats of high-solids clear coat to fill the pores.

How to Prepare a Riflestock for Finishing

YouTube Preview Image

How to Apply a Multi-Coat Finish

YouTube Preview Image

How to Polish the Finish on a Riflestock

YouTube Preview Image

Clear-Coating Your Stock
While you can put an oil-type finish on a Rutland laminate, we think these often look best finished with an automotive clear coat. Rub-on finishes can cause small changes in stock coloration. If you want to preserve the colors in your laminated stock, a quality, spray-on clear-coat is probably the best way to go. CLICK HERE for expert tips on how to prep and clear-coat a laminated stock.

laminated Shehane wood stock

Permalink Gunsmithing, Tech Tip No Comments »
February 27th, 2013

Need Wood? Try HunterBid.com for Turkish Walnut

Many of our readers want a custom rifle that looks as good as it shoots. When it comes to wood stocks, one of the most prized materials is fine Turkish Walnut. You’ll find a wide selection of Turkish Walnut blanks at the HunterBid.com website. Hundreds of selections are available at auction. Prices start as low as $150.00. The finest blanks sell for $1,000 or more. You’ll find both one-piece blanks (for rifles) and two-piece blanks (for shotguns). Most blanks are 36″ or shorter, but some longer Mannlicher blanks are available. Here are two examples from past auctions. The first is an exhibition-grade blank, the second a low-priced blank that still exhibits excellent figure.

hunterbid turkish walnut stock

hunterbid turkish walnut stock

New blank selections are added to the website every other day. The operators of HunterBid report: “If you are interested in any of our blanks in Hunterbid auctions, but you do not like the bidding process, please give us a call (603) 433-8908 or send us an e-mail. We will help you choose a blank that suits you, and even close the auction for you and ship your purchase the same day.” HunterBid.com is run by Chiron Inc., which is 100% owned by the Ergin family who are of Turkish origin. Chiron maintains warehouses in Dover, NH and Istanbul, Turkey.

Hunterbid.com walnut blanks

Permalink Gunsmithing, News No Comments »
February 25th, 2013

Flash F-Class Rig from the UK — Ian’s Blue Beauty

To kick off a new week, we are featuring a splash of color — the beautiful blue 7mm-270 WSM of Forum member Ian B. (aka “Elwood”) from Great Britain. A very knowledgeable guy, Ian is one of the UK’s top F-Class shooters. And he’s the proud owner of a very “Flash” F-Class rig.

Ian Boxell UK F-Class rifle 7mm 270 WSM color

About the Shooter — Ian’s Background
Ian tells us: “I started shooting F-Class Open four years ago when a good friend invited me to Bisley to shoot with the Dorset Riflemen. I found it very enjoyable and a real challenge. The next year I attended the GB F-Class league’s Introduction to F-Class course, and soon afterwards started to compete in the GB F-Class league, while still shooting once a month with the Dorset Riflemen. In this short time frame, I’ve managed to finish 8th in the league last year, 12th in the Europeans, and I was a part of the GB squad that won the team event at the European Championship. I was then selected for the GB F-Open World Championship Team. Unfortunately, due to work commitments, I have had to withdraw.”

Ian Boxell UK F-Class rifle 7mm 270 WSM color

Ian’s Beautiful Blue 7mm-270 WSM F-Class Rifle

Report by Ian B. (aka “Elwood”)
Having spent my first year competing with a magazine-fed 7mm WSM tactical/sporting rifle (Surgeon action and AICS mag) and doing reasonably well with it, I then moved on to a .284 Shehane (.284 Winchester Improved). I love the Shehane and still use it but this year I wanted something for those windy long-range days and so there was only one logical choice, the 7 WSM. This time I chose a 7mm-270 WSM as I quite enjoy case prep (just kidding). Actually, there’s not much to do really. The quality of Norma brass is well known and the Norma 270 WSM brass is quite easy to obtain in the UK.

Ian Boxell UK F-Class rifle 7mm 270 WSM color

The action is a Right Bolt, Left Port (RBLP) Stolle Panda F-Class action, with Jewell trigger. There wasn’t any particular reason behind the RBLP configuration — it was more of a case of that’s what I could get at the time. I had a 1.250″-diameter, straight-profile Bartlein barrel finished at 32 inches and chambered for the Berger 180gr VLD with a .313″ neck diameter. All my metal work and quite a bit of the wood work is done by the excellent Neil McKillop of McKillop Engineering. As with all top gunsmiths, Neil is meticulous to a point of obsessiveness and he’s the name behind quite a few winning rifles including several used by the GB Open and F-TR teams. Neil also inletted the stock from a blank and did the bedding for the action and the front bag runners.

Ian Boxell UK F-Class rifle 7mm 270 WSM color

Loading for the 7mm-270 WSM
I have one “tried and tested” load: 7mm Berger 180gr VLDs, seated .020″ into the lands, Vihtavuori N165 powder and CCI BR2 primers. This load is supremely accurate, but at 2990 FPS it’s a bit slow. To get more speed, I’m currently testing H1000 with good results, but it looks like I may have a slow barrel. I have another Bartlein barrel chambered and ready to screw on when the weather gets warmer. If that new barrel shoots well, the current barrel will probably be used as a practice barrel.

Loading Procedure
I do full case prep, neck-turning, uniforming primer pockets after the first firing, chamfering necks inside and out, and removing burrs around flash holes. Even the best brass sometimes suffers from imperfect quality control. I try to use Redding dies if possible, and will use bump dies, neck bushing dies, and competition seating dies.

I use a RCBS ChargeMaster 1500 to throw a charge just slightly under my desired weight and then trickle-up to final weight using the superb Dandy trickler and a Gem Pro 250 scale.

I anneal every other firing using a Bench-Source machine. Before this I used a Ken Light and also did them by spinning them in a drill. Never again will I do that after using the Bench-Source. After I have annealed, I always run a nylon brush wrapped in 0000 wire wool into the neck to remove any debris.

I keep to the same lot numbers of primers, powders, and bullets. Even the Bergers can vary from lot to lot — I have two different lots of 7mm 180gr VLDs that vary .020″ from bullet base to the ogive. I trim and point my bullets. Pointing may be a mental thing — I had a fantastic shoot while using trimmed and pointed bullets so I do it all the time now. ( A fellow GB team shot refers to them as “Pointless Dies” — I have witnessed him shoot a 99-14V at 1000 yards with bullets that weren’t trimmed or pointed). My next move will be to start measuring bearing surface…where does it all end?

Custom Wood Stock Was Modified by Ian and Treated to a Fancy Paint Job
The stock is a custom-made design crafted by Joe and Simon West of Joe West Rifle Stocks. I had several modifications done to one of their existing stock designs. Having done a lot of my shooting with the AICS, I was quite used to a thumbhole stock, so thought I would try one in F-Class. I told Simon what I wanted and he sent me down a prototype made from very inexpensive Tulip wood. We had a few discussions and then made some more mods..

I made two main changes to the stock. First, I removed the lip at the bottom of the pistol grip because I felt I might rest my hand on this and possibly disturb the rifle. Second, I had the protruding pistol grip base removed so that the bottom of the stock was completely flat like the Precision Rifle & Tool F-Class stock. Simon also made the finger grips to fit my hand and flattened them off to allow for a bit more movement. The stock was then sent to Hydro Graphics in the UK to have a custom exterior finish. The paint color is a Marbleized Candy Oriental Blue. As always, Hydro Graphics did a great job.

Ian Boxell UK F-Class rifle 7mm 270 WSM hydro-dip color

Ian Boxell UK F-Class rifle 7mm 270 WSM hydro-dip colorOptics and Rings
The scope is the excellent 5-50x56mm March with the MTR-2 reticle — far and away the best reticle I have used for F-Class. March makes great optics. During the 2012 European individual F-Class event, using another March (my 8-80x56mm), I could see my shooting partner’s impacts in the white V-Bull at 800 yards! And just recently at a club match I called two V-Bulls at 900 yards using the 8-80X (not at full power). Granted the light has to be perfect to be able to do this, but my highest praise for the Deon Optics glass is that it rivals that of Schmidt & Bender. Having owned both March and S&B scopes and compared them side-by-side, I feel that I can make this statement fairly.

UK-based Third Eye Tactical made the nice, 34mm rings. The UK is now producing some excellent products. We now have UK-made custom actions, rings, rails, stocks and more. It would be nice to think we could have a 100% British-made rifle, and not rely completely on USA-made products. I think all we need is the trigger? But I can’t see there ever being a UK-made scope!

Permalink Competition, Gunsmithing 6 Comments »
February 24th, 2013

Innovative Borka Torque Setting Driver Belongs in Your Toolkit

Borka Torque DriverPh.D Engineer Boris Teper has invented a remarkably compact yet effective torque-setting tool that is ideal for tensioning scope ring fasteners and action screws on rifles. The Torque Settings Driver from Borka Tools is brilliant in its simplicity. The lightweight tool is basically a lever, with a series of hex slots through which a spindle is fitted. The slot position sets the effective lever arm length. How does the tool prevent over-torquing? That’s the magic of Teper’s invention. On one end of the tool is a handle with a spring-loaded ball detent. Once desired torque is reached, the handle overrides the detent, snapping forward so you can’t crank too hard (figure 2 below).

Borka Torque Driver

Borka Torque Driver

The Borka Driver is very easy to use, and despite its simplicity, it is very precise. Lab testing of the Borka driver show that the tool yields the correct torque setting within 4-6% of the true nominal torque measured with a calibration device. That means, for example, if you set the driver for 40 inch-lbs. it will torque the fastener within ± 2.5 lbs of your target setting. That’s as good as some full-size torque wrenches — pretty impressive for a tool that weighs only 4 ounces complete with spindle. And every Borka driver is calibrated to ensure accuracy before it ships.

Borka DriverBorka offers many versions of its tool, with torque ranges from 10 inch-lbs. up to 72 inch-pounds. The basic Borka driver, priced at $55.00, offers six (6) preset torque values. For $15.00 more Borka sells a driver that offers twelve (12) preset torque values. This 12-setting tool, which is not any bigger or heavier than the 6-setting model, is cleverly designed — you simply flip it over to switch from the first six torque settings to the second six. This works because the handle has variable “break” resistance depending on direction of travel. Smart.

Borka’s most popular torque tool is the 12-setting $75.00 “Military Grade” MG driver, model ATD-15×72-12FS-MG. This offers a dozen torque settings from 15- to 72-inch-pounds. We recommend the “Military Grade” model because it has torque settings laser-etched on the surface of the driver arm (see video). That way you’ll always know your torque values. The “Military Grade” model also comes with 1/4″ hex to 1/4″ square (M) and 1/4″ square (F) to 3/8″ square (M) adapters. The Military Grade Model, intended for use in the field by both DOD and LE personel, has already proved popular with “civilian” tactical shooters. You can store the tool in the supplied fabric carry pouch, or stash it (with needed bits) in your range kit.

Video Shows How to Use Borka Driver When Mounting Scope
We suspect many readers are still a bit confused as to how the Borka driver actually works. We could explain in greater detail but a video is worth a thousand words. In the YouTube video below, Frank Galli (aka “LowLight”) from Snipers’ Hide explains how to use the Borka torque driver. Frank demonstrates the $75.00 “Military Grade” Model, but all the Borka lever arm drivers share the same basic operation. Frank shows how to set the spindle position to your desired torque setting and hold to hold the unit properly. Watch carefully and you’ll see how the cylindrical handle at the end of the tool snaps forward or “breaks” when the desired torque setting is reached. Frank notes that: “there is no backlash when torquing. This is an excellent feature as it breaks clean at the desired weight.”

YouTube Preview Image

Where can you get a Borka torque setting driver? All models can be purchased directly from Borka Enterprises by emailing info@borkatools.com. You can also purchase through Manson Precision Reamers, (810) 953-0732. (Dave Manson worked with Boris Teper to get this product to market.) In addition, four models are available from Brownells: ATD-20X4006FS (Brownells item #080-000-734), ATD25X5006FS (Brownells item #080-000-735), ATD-36X7206FS (Brownells item #080-000-736), and ATD-15X7212FS (Brownells item #080-000-737).

DOWNLOAD: Intro to Torque Setting Driver | Borka Torque Driver Users’ Manual | Tool Calibration

Permalink Gear Review, Gunsmithing, New Product 4 Comments »
February 23rd, 2013

Walt Berger (in his 80s) Tops the Field at Visalia

Walt Berger Visalia benchrestLast weekend, at a 100/200 benchrest match in Visalia, CA, Walt Berger, founder of Berger Bullets, won both the Light Varmint (LV) and Heavy Varmint (HV) Grand Aggregates, as well as the Two-Gun Overall title. That’s an impressive sweep.

Walt, who is in his mid-eighties, beat a field of talented shooters who were 20-40 years younger. What’s that line: “Old age and treachery always triumphs over youth and skill”? Actually, Walt has plenty of skill and it wasn’t treachery that earned Walt his Visalia victories. He made the right wind calls, aimed true, and he had good equipment.

Walt was shooting a Saguaro-actioned rifle fitted with the new Nightforce 15-55x52mm Competition Scope. The light weight of the Saguaro action (just 26.6 oz.) and a shorter-than-usual 20 1/4″ barrel allowed Walt to make weight in the 10.5-lb Light Varmint Class, even with the 27.87-ounce Nightforce Comp Scope. Walt did switch to a heavier barrel for the 13.5-lb Heavy Varmint class. But his LV results suggest that Walt could have won the HV Agg using the lighter barrel as well. Walt was using 6mm Berger Column FB bullets for both LV and HV.

Saguaro Action Marsh benchrest
L to R: Jim Nicolas, Tom Price, Don Nielson, Walt Berger, Bill Summers, George Pizzillo, Duke Rovarino, George Lozano, Joe Stanovich. CLICK HERE for full Match Results.

Shorter, Lighter Barrels for Short-Range Benchrest? — Boyd Allen
Given Walt Berger’s success with a 20.25″ barrel at Visalia, I wondered how much weight one could save with a shorter barrel and the svelte Saguaro action. I ran some models using Dan Lilja’s FREE Barrel Weight Calculation software which predicts stiffness and barrel weight. Using this software, I could model different barrel profiles and diameters, with the goal of saving weight without sacrificing stiffness.

I came up with an optimized barrel contour with a shorter cylinder length and more taper (.800″ at muzzle). The Lilja program said this barrel (at 20.5″) would be just as stiff as a typical 21.5″ benchrest barrel, but would be roughly 13.5 ounces lighter. That’s right, by changing the barrel profile and trimming 1″ from the barrel OAL we can save over thirteen ounces without losing stiffness (at least the software says so).

A Saguaro action is 3.9 ounces lighter than a Stolle Panda. Combine that with the 13.5-ounce weight saving from a shorter barrel (with optimized contour) and you get a total weight savings of 17.4 ounces — more than a pound! That opens up a whole new world for 10.5-lb LV rifles. That extra pound lets a shooter run a heavier scope, or he can put another pound of weight into the stock and/or tuner.

Saguaro Action Marsh benchrest

I discussed the topic of shorter, reduced-weight benchrest barrels with two world record-holding benchrest shooters who were at the Visalia match. They both observed that, while shorter barrels shot well, shorter barrels produced more blast/noise, causing flinch problems. Accordingly, both of these shooters stopped using shorter barrels. I wonder if “double coverage” ear protection (with custom molded plugs and electronic muffs) would attenuate the blast enough to make the shorter barrels more “shootable”. Perhaps, then, we would see more shorter, lighter-contour barrels at matches.

Permalink Competition, Gunsmithing 1 Comment »
February 13th, 2013

Match-Winning Rifle: Shiraz Balolia’s .300 WSM F-Open Rig

After Shiraz Balolia (President of Grizzly Industrial) won the F-Open Division at the 2013 Berger Southwest Long Range Nationals, folks wanted to know more about Shiraz’s match-winning .300 Winchester Short Magnum (WSM) rifle. That gun is a great piece of work, we can assure you. The Masterclass stock was extensively customized by Shiraz himself, who is a talented wood-worker (as well as a superb F-Class trigger-puller). CLICK PHOTO to see large “centerfold” shot of rifle.

Shiraz Balolia F-Class

Shiraz Balolia F-Class

The rifle features a BAT Machine ‘M’ action, with a 32″, 1:10″-twist Bartlein barrel. Metal work was done by Gordy Gritters. The scope is a March 10-60x52mm, which sits on a +20 MOA angled rail. The primary stockwork, including fitting of the adjustable cheek-piece and buttplate, was done by Alex Sitman of Masterclass Stocks. Shiraz customized the stock with finger grooves, fore-end channel, and a bottom rear slide. Shiraz did the final stock finishing as well.

Shiraz Balolia F-Class

Listen to Shiraz Balolia Talk about his F-Open Victory (Click PLAY to Launch Audio File)

[haiku url=”http://accurateshooter.net/Video/shirazmemo1.mp3″ title=”Shiraz Talks about F-Open”]


Q&A with Shiraz Balolia

Shiraz f-class
Q: Is the .300 WSM the “next big thing” in F-Open Competition?

Shiraz: The .300 WSM takes a bit to get used to. With more powder you have a bigger bang next to your head, plus you have to deal with the mule kick. My gun recoils so hard that it was coming to rest down on the neighbor’s target. I had to be careful about not cross-firing. Once you get these behind you it can be a very accurate caliber to shoot because of the great .30 cal bullet choices. There were about five .300 magnums in Phoenix, but only one in the top ten. You still have to read the wind!

Shiraz Balolia F-Class

Q: What’s your match load for the .300 WSM?

Shiraz: I use Norma brass with turned necks. At the Berger SW Nationals I used Berger 215gr Hybrids, Fed 215 LR magnum primers, and a stout load of Hodgdon H4831 SC. This drives the 215s at around 2910 FPS. If that sounds fast, remember I’m using a a 32″-long barrel.

Q: Can you tell us about your chamber and your fire-forming process?

Shiraz: On the .300” WSM [I run] a tight-neck .336” chamber for turned necks. Basically, I fire-form all my brass in a fire-form barrel and save the good barrels for matches. Gordy is so good that he can chamber different barrels to within .0002” in the headspace dimension. That way I can have several same-caliber barrels and can use the same brass for all those barrels. I use a .0005″ shoulder bump for my brass. I load the bullets so that the bearing surface sits above the doughnut ring.

Q: Do You Think Tuners Will Become Popular in F-Class?

Shiraz fclassShiraz: Tuners are a double-edged sword. In order to use them most efficiently you need to load test the barrel in many different conditions and record the results, fine tuning and turning the dials to find the best harmonic of that barrel in a given condition. When you encounter a similar condition at a match to what you tested previously, you would look up your notes and turn the dials so that it matches your tested condition. I am over-simplifying this, as it is quite complex and there are many articles about tuners. I do not see tuners catching on in F-Class as 99% of the users would not want to go through the aggravation.

Q: The stock looks highly customized. What special work did you do?

Shiraz: The stock is a Master Class F-Class stock that was highly modified by me. I channeled out the fore-end so the stock would ride on two “rails” on the front bag and not rock. I also added a wide 1.25″ base on the bottom of the stock that rides on the rear bag. There is a matching rear bag with a wide slot in it. The gun slides back and forth nicely and is very stable. I wanted finger grooves that fit my hand so I carefully filed those by hand with a round file, making sure to fit it many times during the process. Once all the modifications were complete I sanded and sprayed the stock with clear UV lacquer. My UV booth cures the spray in minutes. I usually assemble the gun the same day I spray it. As you know, I build guitars as a hobby as well.

Permalink Competition, Gear Review, Gunsmithing 9 Comments »
January 31st, 2013

CigarCop’s .284 Win BAT-Action Beauty from Bob Green

Forum member K.W., aka ‘CigarCop’, has spotlighted his handsome long-range F-Class and Bench Rifle in our Forum’s Show Off Your Bat! thread. This is built with a BAT Multi-Flat action, Brux barrel, and a fiberglass McMillan F-Class stock. As you can see, it’s one handsome rifle. Be sure to click the image below to see the much more impressive wide-screen image!

Bob Green .284 Win BAT manners

The smithing was done by Bob Green and CigarCop was full of praise for Bob’s work: “I can’t really say enough about Bob Green, his attention to every detail and his ability to build an awesome shooting rifle… but once again he turned a pile of parts into a masterpiece! Picked this one up yesterday and enjoyed a Cigar with him as well. Built on a Bat MB Multi-flat in .284 Win with a Brux 1:8.5″ twist barrel. I put ten rounds through her today to get her up and running! It’s almost identical to my 6.5x47L that [Bob] also built. Once again, thanks Bob!”

Bob Green .284 Win BAT manners

Bob Green told us: “There was nothing really unusual about this build — this is the quality we try to maintain on all our guns. The barrel was chambered with the client’s reamer to a min-spec SAAMI .284 Win. The Multi-Flat BAT is pillar-bedded and bolted in, with no extra weight added to the stock. CigarCop provided the nice metal spacers on the buttstock and I polished them up. The finish is plain black but it looks good.”

Bob Green .284 Win BAT manners

Bob Green .284 Win BAT manners

Based in York, Pennsylvania, Bob Green is one of AccurateShooter.com’s recommended gunsmiths. To learn more about his Bob’s work visit GreensRifles.com, email Bob [at] Greensrifles.com, or call (717) 792-1069.

Permalink Gear Review, Gunsmithing 6 Comments »
January 29th, 2013

Robert Carnell’s Australian Benchrest Bulletin

Thanks to a dedicated ‘Down-Under’ benchrester, Australian shooters have an excellent web resource for their sport. Sydney’s Robert Carnell has created a content-rich website for Australian shooters, www.benchrestbulletin.net. Carnell’s Benchrest Bulletin provides match schedules and results, range info, recent news, record listings, shooting tips, and links to important Australian and Pacific Rim shooting organizations. You’ll also find gear reviews and a Shooter’s Forum.

Australia Benchrest Bulletin

Carnell, a past Australian Sporter Class champion, is an accomplished benchrest shooter with decades of experience. In 1993 he won a Silver Medal at the World Championships, and he has placed highly in events he’s attended in the United States. But Carnell is far more than an ace trigger puller. Robert is a skilled and creative “home gunsmith” who has crafted his own custom action and built his own railguns from scratch. You can learn about these and other Carnellian creations in the “Personal Projects” section of Robert’s website.

Home-Built Rail Gun — Aussie Innovation
Below are photos of one of Rob Carnell’s most amazing builds. This liquid-cooled, tension-barrel rail gun is a great example of self-reliant Aussie engineering. The barrel runs inside a coolent-filled, large-diameter sleeve, much like an old water-cooled machine gun. This is the fourth rail gun that Rob built, and the second fitted with a tensioned barrel.

Australia Benchrest Bulletin

Australia Benchrest Bulletin

Robert explains: “My railgun design has a 1.75″ barrel under tension inside an aluminium tube filled with radiator coolant. There is nearly a gallon of coolant, and the barrel stays cool no matter how many shots I seem to fire, or how quickly they are shot. The brass nut on the front rides on a nylon bearing and can be tightened to get the best accuracy. I am a believer in the ‘tuner’ idea and this seems to work for me. The main tube is thick-walled aluminium 600mm (24″) long. There is a flange at both ends. The flange at the back fits onto the barrel before the action is screwed on. The front flange is a press-fit into the tube, then there is a brass nut that fits over the barrel and screws against a nylon washer on the front flange. The Railgun’s base is aluminium and has the standard adjustments — windage, elevation and a sighter cam. In addition, there is a 1/10 thou dial indicator for windage. This allows me to zero the indicator and shoot my group. If I need to add a bit of windage for a condition, I can quickly get back to the original position if my condition comes back.”

Home-Built Action Uses Remington Bolt
Rob’s rail gun uses his own home-made stainless action, which features Panda-spec threads and a modified Remington 700 aftermarket bolt. Not bad for a do-it-yourself project we’d say! CLICK HERE to read how Rob designed and built the action.

Australia Benchrest Bulletin

Permalink Gunsmithing, News 5 Comments »