October 21st, 2012

TECH Tip: How to Set Your Dies for Correct Shoulder Bump

Some of our readers have questioned how to set up their body dies or full-length sizing dies. Specifically, AFTER sizing, they wonder how much resistance they should feel when closing their bolt.

Forum member Preacher explains:

“A little resistance is a good, when it’s time for a big hammer it’s bad…. Keep your full-length die set up to just bump the shoulder back when they get a little too tight going into the chamber, and you’ll be good to go.”

To quantify what Preacher says, for starters, we suggest setting your body die, or full-length sizing die, to have .0015″ of “bump”. NOTE: This assumes that your die is a good match to your chamber. If your sizing or body die is too big at the base you could push the shoulder back .003″ and still have “sticky case” syndrome. Also, the .0015″ spec is for bolt guns. For AR15s you need to bump the shoulder of your cases .003″ – .005″, for enhanced reliability. For those who have never worked with a body die, bump die, or Full-length sizing die, to increase bump, you loosen lock-ring and screw the die in further (move die down relative to shell-holder). A small amount (just a few degrees) of die rotation can make a difference. To reduce bump you screw the die out (move die up). Re-set lock-ring to match changes in die up/down position.

That .0015″ is a good starting point, but some shooters prefer to refine this by feel. Forum member Chuckhunter notes: “To get a better feel, remove the firing pin from your bolt. This will give you the actual feel of the case without the resistance of the firing pin spring. I always do this when setting up my FL dies by feel. I lock the die in when there is just the very slightest resistance on the bolt and I mean very slight.” Chino69 concurs: “Remove the firing pin to get the proper feel. With no brass in the chamber, the bolt handle should drop down into its recess from the full-open position. Now insert a piece of fire-formed brass with the primer removed. The bolt handle should go to the mid-closed position, requiring an assist to cam home. Do this several times to familiarize yourself with the feel. This is how you want your dies to size your brass, to achieve minimal headspace and a nearly glove-like fit in your chamber.”

We caution that, no matter how well you have developed a “feel” for bolt-closing resistance, once you’ve worked out your die setting, you should always measure the actual amount of shoulder bump to ensure that you are not pushing the shoulder too far back. This is an important safety check. You can measure this using a comparator that attaches to your caliper jaws, or alternatively, use a sized pistol case with the primer removed. See Poor Man’s Headspace Gauge.

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October 21st, 2012

Planned Federal Budget Freeze May Threaten Public Ranges

Pittman-Robertson gun range funding

Story by NRAHuntersRights.org and NRAblog.com
Shown above is the Belfast Wildlife Area rifle range in Kindards, South Carolina. Belfast was the first public, unmanned shooting range opened and paid for completely with funds raised by NRA Grants and the Wildlife and Sportfish Restoration Program … an act made possible through Pittman-Robertson grants. Several other state Natural Resource Departments have followed suit. Such facilities provide hunters and shooters with a convenient, low cost location to sight in firearms and practice shooting. Now that may be in jeopardy.

In the article below, NRAHuntersRights.org Managing Editor J.R. Robbins explains why government funding for Public Shooting Ranges is threatened:


OMB Threatens to Freeze Pittman-Robertson Funds
Sportsmen nationwide should be aware of a recently released report from the White House Office of Management and Budget that itemizes $31 million in Pittman-Robertson funds to be “sequestered” from the U.S. budget. Sequestration sets aside funding–effectively “freezing” it — until a debt is repaid.

Pittman-Robertson gun range fundingThe listing of the P-R funding (as well as $34 million of Dingell-Johnson funds that support sport fishing) is part of a huge package of across-the-board government budget reductions planned to take effect January 2, 2013, unless Congress can develop a plan to cut $1.2 trillion over the next decade.

This year is the 75th anniversary of the Pittman-Robertson Act, more formally known as the Federal Aid in Wildlife Restoration Act. As most hunters know, the act put an 11 percent excise tax on rifles, shotguns, ammunition and archery equipment that is distributed to state game and fish agencies for the purposes of habitat acquisition and improvement, reintroduction of declining species, wildlife research, hunter education, shooting range development and other conservation projects. (The tax on handguns is 10 percent.)

It is this funding and these projects that have brought back species such as whitetail deer, turkeys, wood ducks, antelope, bald eagles and Canada geese from dangerously low levels a century ago to the strong, sustainable populations we see today. Hunters’ dollars are directly responsible for these and other conservation milestones.

Since 1937, hunters have contributed nearly $7 billion dollars through the Pittman-Robertson Act for the benefit of wildlife conservation. For any given project, P-R funding pays 75 percent of costs, and states must contribute at least 25 percent–most of which comes from hunting license fees …

Read the rest of NRAHuntersRights’ article on the threat to Pittman-Robertson HERE.

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