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June 25th, 2007
Vihtavuori N133 in Stock at R.W. HartAs of 11:00 am June 25, the folks at R.W. Hart report they have more Vihtavuori N133 powder in stock. Currently Hart has Eight 8-lb jugs ($149.99 per jug), and a couple dozen one-pound ($23.99/lb) containers. The N133 powder arrived 5 days ago and is going fast. If you are in dire need of Vihtavuori N-133, give Hart’s a call at 1-800-368-3656. Act quickly. Hart’s expects this to sell out right away.
June 25th, 2007
Reever Wins Match with New 108gr BergersForum member Danny Reever gave the new Berger 108s (See Bulletin, 6/23/07) their first taste of competition this past weekend at Shippensburg, PA. Shooting his 6BR in the Heavy Custom class, Danny won the match. Along the way he posted an impressive 1.509″ group at 500 meters (547 yards). Here’s what Danny had to say: “Yesterday I shot the new 108s in Shippensburg’s monthly Ground Hog Match. Conditions were a bit rough with switchy, gusting winds in the 5-10 MPH range and some very heavy mirage at all yardages being particularly bad at 300 and 500 meters. In fact at 500 meters you couldn’t see the scoring rings on the target let alone bullet holes. At 500 meters (547 yards) I managed a 41 score and a real nice 1.509 group considering the conditions. My total score was a 140 out of a possible 150 which was good enough for first place in Heavy Custom class for the day. This was the 108’s initial baptism by fire so to speak and they came through with flying colors.”
June 24th, 2007
CP Convertible ON/OFF Muzzle Brake
Jody Calhoun of SavageShooters.com tested one of the brakes, and gave it high marks: “The effect it had on recoil was very noticeable. [My 30-06] performed very much like a medium load .308. Needless to say, I was impressed. I also liked the way it has the detent ball that allows you to go from “ON” to “OFF” in a split second without even looking. The brake stayed in position until I moved it. Operation is smooth with no slack between parts. It does have that typical muzzle brake flash and noise. Fortunately, its ports are angled in a much better fashion than most other brakes, making it less offensive[.]”
June 24th, 2007
Precise Case Trimming without a MicrometerDo you have a Wilson case trimmer but can’t afford the $84.00 to add the handy Micrometer upgrade (Sinclair Int’l item 05-4500)? Well Boyd Allen has come up with a clever use of a standard set of calipers that lets you set the cut length precisely within .001″. Just open the jaws of your caliper and put one jaw on the outboard end of the ring (with set screw) that holds the threaded length-adjusting rod. Set the other caliper jaw on the flat face at the end of the threaded rod that contacts the case rim. If you have a sample case set to the correct cut length, use that to set the position of the threaded rod. Then use your calipers to measure that length. This way you can repeat the cut length each time, or adjust the trimmed case precisely in .001″ increments.
If you change from one cartridge to another, just use your calipers to re-set the desired cut length. Alternatively, ReedG notes you can use the inside caliper jaws and measure directly from the end of the threaded rod to the cutter face. That’s a bit trickier, but it measures actual trim length.
June 23rd, 2007
SITE NEWS: Message Board Upgrades
We found that, once users became familiar with the Forum they almost universally preferred to use the wide layout version of the forum. This reduced the need to scroll around, and it also allowed you to view large photos better. In light of this user preference, we have now officially switched over to an “all-wide, all the time” Forum format. In addition we’ve added some significant upgrades. A Forum FAQ + HELP section was added today. In addition, we have added a very powerful poll module. This allows us to run multiple, photo-illustrated surveys at the same time. The polls are set to randomly rotate each time the main forum page is refreshed. The ability to provide photos of products and allow users to voice their preferences should yield some fascinating results. At right (above) you see one of six polls actively running on the forum. Below is a screen shot of the new Forum displayed at nearly full extension on a 19″ monitor. As you can see, there’s lots of room. Hopefully readers will value this upgrade and the change will demonstrate that “bigger is better” when it comes to web pages.
June 23rd, 2007
Berger Selects 108gr 6mm for ProductionOver the past few weeks, Berger Bullets has been evaluating three new tangent ogive (non-VLD) bullets, in 105, 107, and 108 grain weights. Berger sent samples to many top shooters, including Forum members Danny Reever, James Phillips, and Wm. Roscoe. The 107s shot the best for James (see Test Results), but Danny and many other shooters reported great results with the 108s, which seems to have a slightly shorter boat-tail than the other two prototypes. Here’s one of Danny’s targets, shot with an 8-twist 6BR with a .104″ freebore:
Yesterday, Michelle Gallagher of Berger announced that the 108-grainer had been selected as the design that will go into production. The 108s will start rolling off the bullet presses for general consumption very soon. The specs on the 108gr Berger are: 1.225″ OAL, .712″ base to ogive, .533″ bearing surface length, and 108.08 grains average weight (Measured with Acculab MXX-123). Why is Berger bringing out this new bullet when the existing 105 VLD shoots so well? A tangent ogive bullet is generally considered to work well jumped (i.e. seated away from the lands), whereas secant-ogive VLDs typically (but not always) prefer to be seated in the lands. This new bullet should offer optimal performance for shooters who prefer to jump their bullets. Berger’s Eric Stecker has explained: “All VLD bullets (any brand) are made using a secant ogive. This results in a more abrupt transition into the ogive radius as compared to a tangent ogive (non-VLD of any brand). This abrupt transition on the secant ogive (VLD) bullets means that the ogive contacts the lead angle differently than a tangent ogive (non-VLD) will.”
June 22nd, 2007
Disabled Shooters to Compete in Air Gun EventsThis summer, the NRA and major sponsor Beeman Precision, is sponsoring a series of matches for marksmen with disabilities. This 4-event series, the Beeman Grand Prix Air Gun Tour, commenced June 2nd in Palmyra, PA at the Appalachian Wheelchair Games. Three more matches are scheduled.
On June 28-29, aptly named Nitro, WV will host the WV Wheelchair Shooting Championships. Three weeks later, on July 20-21, the Fresno Wheelchair Shooting Championship will be held in Fresno, CA. Lastly, the Glenda Horton Memorial Finals will take place August 21-25 at New Braunfels, TX. We wish all competitors good luck in these events, and applaud the NRA and Beeman for providing this competitive opportunity for disabled shooters. For more info, call NRA Disabled Shooting Services at (703) 267-1495.
We applaud all those with disabilities who enjoy the shooting sports–whether their interest be prone shooting, F-Class, air rifle, or bullseye pistol. At left is John Campbell, a Britisher who participated in the U.S. F-Class Championships earlier this year. Though wheelchair bound, John remains an outstanding marksman who more than holds his own in tough international competition.
June 22nd, 2007
Remington Rebate Campaign Announced
In an effort to reduce inventory (and expand its customer base), Remington Arms Co. announced a major product rebate campaign to commence August 1, 2007. Remington’s “Load Up on Savings” campaign will be the largest firearms-related consumer rebate program ever offered in a single season. (This is one of the first major moves by the new executive team recently installed at Remington by Cerberus Capital Management, Remington’s parent holding company.) Remington hopes the promotion will stimulate sales during the fall and winter hunting seasons, as rebates will be offered on purchases from Aug. 1 through Dec. 31, 2007. A full list of rebate-eligible products (including rifles, shotguns, and ammo) will be posted on the Remington website. Our readers will be most interested in the following offers: $50 rebate on Rem Model 700 and Model Seven Bolt Action Rifles (700 SPS™ and 700 ADL™). $30 rebate on Rem Model 700 SPS, Model 700 ADL, Model 770, Model 710 and Model 715 Bolt Action Rifles. $30 rebate on Model 798 and Model 799 Mauser Action Rifles. $30 rebate on Model 870 Express Pump Action Shotguns. Ammo: There will also be rebates on shotgun and rifle ammunition, including Express Core-Lokt ammo.
June 22nd, 2007
Nice High-Capacity Soft Case on SaleThese days, many varmint hunters outfit their rigs much like long-range benchrest guns. You’ll find long barrels with muzzle brakes, “long-wheelbase” stocks with wide fore-ends, and big optics (such as the NightForce NXS) with tall “target” turrets. That all adds up to a pretty sizeable package, particularly if you throw a bipod on the front end. Most soft rifle cases won’t fit these modern jumbo varmint rifles very well. The cases are too short and don’t have enough clearance for a big scope.
The Bob Allen 48″-long “Legend” soft case is an exception. Nice and tall, it will fit a heavy varmint rig with a big scope with room to spare. 48 inches in length, it will house rifles with up to 28″ barrels (unless you have an extended buttplate). The Allen Legend features an Endura shell, wrap-around handles and 1″ foam padding. Nebraskan D. McClain reports: “This case is really nice. It fits my Savage 12BVSS with Harris bipod and large scope with sunshade like a glove. I would recommend this case for similar set-up rifle to anyone.” Right now through the end of June, 2007, MidwayUSA is selling the 48″ Allen Legend case (item 717607) in black/Advantage Camo for $24.99–that’s $6.00 off the regular price. This writer has a number of Allen soft cases and they are well made, with strong zippers and good stitching.
June 21st, 2007
6mm Bore Diameter and Bullet SelectionLong-time visitors to this site will recall that, in 2006, Jackie Schmidt did an extensive 6BR accuracy test with his rail gun. It was fitted with a straight, heavy contour .237″ land-diameter Krieger barrel. Many interesting discoveries came from that test, including the relationship of barrel length to velocity. Jackie cut that barrel down in 1″ increments from 33″ to 28″ and we only lost 8 fps per inch. That test barrel also showed a very strong preference for Berger 105gr VLD bullets, which (at that time) measured about .2433″ at the pressure ring. To our surprise, however, the accuracy of Lapua 105 Scenars was good, but not what we anticipated based on results in other rifles. We noted that the Scenars were extremely uniform in weight and dimensions. However, the max bullet diameter was around .2428″. So these Scenar bullets were about half a thousandth skinnier than the 105gr Bergers.
Can the Scenars shoot superbly in a Krieger? The answer is yes, if the Krieger is a .236″. Bore dimension (specifically land diameter) DOES make a difference, based on recent results from Jackie. Jackie has recently learned that the Lapua 105 Scenars WILL shoot with blistering accuracy in a Krieger barrel–a Krieger .236″ bore barrel. Jackie told us: “Well, I have to admit it… you guys were right about those Lapua Scenars. I just built up a long-range 6BR rifle for a friend. We put a Krieger 4-groove .236″ barrel on it, and, man those Scenars shot like a house on fire. The accuracy is just amazing. After my experience with the rail gun project I never would have believed it. But yes, the Scenars are outstanding in a .236″. I personally shot a measured .270″ 5-shot group at 200 yards with the Lapua 105s in that gun. And the velocity–you wouldn’t believe it–we were seeing 3000 fps with a full case of Vihtavuori N150. In a long barrel, with a .236″ bore, the N150/Scenar combo is a winner–for accuracy and velocity. You just have to match the bullet to the barrel. Skinny bullet? Go .236″. It works.”
June 21st, 2007
Scope Boosting–Sightron vs. WeaverOne thing that Jackie Schmidt has been doing over the past few months, is dissassembling Weaver and Sightron 36X Benchrest scopes and locking them up internally. With the internal windage and elevation controls fixed in place, these scope are then mounted using the externally adjustable scope mount system developed by Gene Bukys (shown below).
In working with the different scopes, Jackie has observed that the basic designs of the Weaver T-36 and the Sightron BR scopes are similar. However, Jackie did find some important differences when it comes to boosting scope magnification. The Weaver is a better candidate for boosting because of the way its reticle is installed. Jackie writes: “I have had both brands apart, and they both share the same design feature in the way the erector tube is mounted, that being a permanently fixed ball and gimble joint sleeve assembly that allows the erector tube to pivot. There is a difference in the way the erector tube sleeve is secured inside the scope body, but that is of no consequence. They both share a similar front objective assembly, (sliding lens assembly cartridge held against a stop by a large coil spring), so there isn’t much advantage of one over the other. I would call it a toss up as to which one might be better, or worse. The Weaver is a couple of ounces lighter. The one difference is if you wanted to boost one or the other. When boosting the power on a scope, one must keep the reticle cross hairs within the focal plain of the eye piece lens assembly. Most scopes are boosted by adding a small lens assembly between the erector tube and the eye piece, moving the reticle assembly back so as to maintain its correct position in relation to the eye piece. Since the Sightron has the reticle mounted in the end of the erector tube, it would be very difficult to move it back. The Weaver is much like the older Leupolds, you can move the reticle assembly back, since it is mounted into the scope body itself.”
June 20th, 2007
Adapting RCBS Precision Mic for 6BR and Similar CasesThe $35.00 RCBS Precision MIC is a well-made and useful tool for measuring cartridge headspace and bullet seating depth. The Precision Mic measures from a datum point on the case shoulder to the base. Unfortunately the Precision MIC is not specifically made for the 6mmBR Norma, 22BR, 6XC or 6.5×47 Lapua cases. Don’t despair. Reader Caduceus has devised a clever way to adapt a .308 Winchester Precision Mic for short cases that match the .308 Win in rim diameter and case body diameter. He simply creates a spacer out of a pistol cartridge. He trimmed a 9mm case to 0.511″ and “found this to be a perfect fit which gave a zero micrometer reading when the FL-sized 6BR case was placed in it.”
Click HERE for a full article explaining how to adapt an RCBS Precision Mic for use with a 6BR. You can do the same thing with a 6XC or 6.5×47 case–just cut the spacer to a shorter length (for an 0.000″ mic reading). Note: You can also use this procedure with an RCBS .243 Winchester Precision Mic. 
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Copyright © 2024 Accurate Shooter
We love the recoil reduction we get from muzzle brakes, but we don’t like the added noise and blast. And we’d rather not blow dust and dirt at our neighbors on the firing line. Chris Spera (Cowpuncher) of 
Our 
Profile of a Shooter
Caduceus explains: “I can use the 308 version of the RCBS Precision Mic to compare brass which has been fully sized in my 6BR body die with brass which has been fired in my chamber. With the spacer inserted, FL-resized cases mic 0.000” at the datum point on the shoulder. Using the same set-up, fire-formed cases measure +0.005”. In other words, my chamber has a headspace of +0.005″ above minimum dimensions. This is fairly typical of a custom rifle set up for switch-barrel use. If I were to FL-resize my brass down to minimum spec each time, this excessive working would shorten its life-cycle and might lead to case head separation. Now that I know the headspace of the chamber, I can substitute the standard shell holder on my press with a Redding +0.004” competition shell-holder. This ensures that my cases only receive 0.001” of shoulder set-back.”
