July 11th, 2012

A Day at the ‘Dasher Dome’ with Birdog and Voldoc

Report by Birdog
Forum member John S. aka “Voldoc”, came over Sunday to check the elevation come-ups on his new March scope. At my home range, dubbed the ‘Dasher Dome’, we had either a gong or paper target at 100-yard intervals to 800 yards. Voldoc wanted to check his ballistic chart against real world conditions. Voldoc will use this test to verify his come-ups for a “quick-view” BDC tape that will be applied to his elevation turret. He was running his “go to”, tried and true “red mist load”, an 87gr Hornady V-Max. The rifle was a Nesika-action 6mm Dasher with 1:12″-twist HV-contour Krieger. Doc has doubles with this combination out to 700 yards and many kills past 1,000. [Editor’s Note: We featured Voldoc’s varmint rifles in our Tennessee Triple Threat story, a Gun of the Week article on this site. Notably, Voldoc made a 1,000-yard plus prarie dog kill with a 20BR shooting 55gr Bergers.]

Dasher Dome Voldoc

My ‘Dasher Dome’ is a good place for testing. Dirt berms have just been completed at 100, 300, 600, 700, an 780 yards. Voldoc started at 100 and shot at 100-yard intervals recording his elevation at each interval. His ballistic chart was within a click or two at each distance. When he reached 780 yards, he repeated the test at each distance down to 300 yards. Dead on!

Dasher Dome Voldoc

BDC Turret Tape XterminatorCustom BDC Turret Tapes
Doc already has ballistics tapes fitted to his Nightforce-equipped rigs. But Doc’s new Dasher has a March so he need to confirm the come-ups. The tapes, made by Forum member Dominic (aka “Xterminator”), show rotation clicks for various yardages. There are versions for both standard and “High-Speed” Nightforce turrets, as well as some other scope brands. For more info, send email to: media-banc [at] videotron.ca . Learn more about Dominic’s custom come-up tapes in this Forum Thread.

Doc at the ‘Dome’

Confirmed results at 780 yards
Sub-Quarter MOA group on Steel Prairie Dog

The photo at right confirms that VolDoc has his zeroes confirmed at 780 yards. Look closely. That’s about a 1.5″ center-mass group on ‘Chico’ the prairie dog (lower right). Nice Shooting Doc! Chico’s buddy, ‘Chuckie’ the steel ground-hog, took many hits. Show in photo are three hits in the throat zone.

Good Friends, Good Rifles Make for the Best of Times
Birdog reports: “Overall, this was a great way to spent a Sunday. Temps reached 103° F, but Doc got to the ‘Dasher Dome’ at 5:30 a.m. and we beat the heat. After testing was completed, we walked two miles with temps in the 90s. What can I say — good friends, good BRs — this was the best of times!

Rangefinders

Birdog Dasher Dome

Serious Rangefinders:
Very high-quality laser rangefinders permitted the shooters to confirm target distances with great precision. Birdog uses a Vectronix LRF while Voldoc uses a Leica GeoVid rangefinding binoculars.

Rangefinders

Permalink Gear Review, Hunting/Varminting, Tech Tip 1 Comment »
July 11th, 2012

TOOL TIP: Make Your Own Length-to-Lands Gauge

To achieve best accuracy with a rifle, you must control bullet seating depth very precisely, so all bullets end up in the same place relative to the entrance of the lands, every time. There may be multiple cartridge OALs which prove accurate. However, with each, you first need to determine a “zero” point — a reliable, and repeatable OAL where the bullet is “just touching” the lands.

There are tools, such as the Hornady (formerly Stoney Point) OAL Gauge, that will help you find a seating OAL just touching the lands. However, the tool requires that you use a special modified case for each cartridge you shoot. And, while we find that the Hornady OAL Gauge is repeatable, it does take some practice to get in right.

Make Your Own Length-to-Lands Gauge with a Dremel
Here’s an inexpensive alternative to the Hornady OAL tool — a slotted case. Forum member Andris Silins explais how to create a slotted case to measure length to the lands in your rifle:

“Here’s what I did to find length to lands for seating my bullets. I made four cuts into the neck of fire-formed brass. Then I pressed the bullet in lightly and chambered the entire gauge. As the cartridge chambers, the bullet slides back into the case to give you length to lands. It took less than five minutes to get it cut and working. A little light oil in the barrel just past the chamber helps ensure the bullet does not get stuck in the lands. It works great and is very accurate.

case OAL gauge home made

I made the cuts using a Dremel with a cut-off wheel. You can adjust tension two ways. First, you can make the cuts longer or shorter. Longer cuts = less tension. If you used only three cuts insted of four you would get more tension. The trick is to be gentle when you open and close the bolt. If you ram the bolt closed you may wedge the bullet into the lands. When you open the bolt it helps to keep a finger or two near by to guide the case out straight because the ejector wants to push it sideways.”

Permalink Reloading 12 Comments »
July 11th, 2012

FFL-Holders Must Start Using New Revised Form 4473

ATF Form 4473FFL-holders take note. The ATF has revised Form 4473 for over-the-counter transactions. As of July 9, 2012, for all transactions requiring a 4473, use of the NEW REVISED FORM is MANDATORY. You need to start using the new form right now. ATF mailed new Form 4473 packets to FFL-holders. If you have not received the new Form 4473, CLICK HERE to Download New Revised Form 4473.

  • If you are an FFL and have not received a supply from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), contact your local ATF office immediately. To obtain the forms, call the ATF Forms Distribution Center, 301-583-4696, or order online at www.atf.gov.
  • UPDATE: If you have not received a packet of the revised ATF Form 4473, April 2012 Edition. To ensure that you are utilizing the correct version of the form, you may print the revised ATF Form 4473 at http://www.atf.gov/forms/download/atf-f-4473-1.pdf. Please be sure to copy all six pages of the form and staple them together if you elect to use a printed or photocopied version of the form.
  • The impetus for the revisions resulted from two opinions issued by the Department of Justice (DOJ) relating to aliens’ ability to receive and possess firearms. In response to DOJ’s concerns, questions ll.l and 12, and corresponding instructions, have been modified. See "Open Letter to All Federal Firearms Licensees" for a more detailed explanation and a copy of the revised form, along with "notices, instructions and definitions."
  • An "Important Notice to All Federal Firearms Licensees" has been issued by ATF to further explain changes appearing in the new Form 4473.
  • "Questions and Answers — Revised ATF4473 (April 2012 Edition), prepared and published by ATF, poses relevant questions regarding the changes in Form 4473 and provides helpful answers.
Permalink Gunsmithing, News 2 Comments »