December 5th, 2009

Big News: Lapua Will Offer 22-250 Brass in 2010

Lapua 22-250 Brass LogoWe have confirmed that Lapua will produce and distribute 22-250 cartridge brass starting in early 2010. The official product release will be at SHOT Show in Las Vegas (Jan. 19-22). We don’t have production samples yet, but there are about 1000 pieces of brass in the hands of testers in the United States at this time. This stuff is for real — CLICK THIS LINK for PHOTOS.

Lapua 22-250 brassOne of the folks lucky enough to get his hands on the new Lapua 22-250 brass is writer/shooter Steven Boelter, author of the Rifleman’s Guide to Rimfire Ammunition. Steven has measured and inspected the new brass and he says it appears to be “on a par, quality-wise, with Lapua’s 220 Russian and 6BR brass”, which is saying a lot. Steve adds that: “[what I have] is in fact part of a pre-production run, and the main stuff will be ready for second quarter, 2010″. Steven is working on an article for Precision Shooting magazine that will include exact dimensions for the new brass, as well as initial load testing results. An exact release date for Steven’s article has not yet been set, but Boelter hopes the story will come out in January or February.

Boelter can’t say much more about the brass prior to publication of the article. But we can confirm that it has a large primer pocket, standard 22-250 rim size, and it is annealed like other premium Lapua brass. Steven has posted a couple photos of the brass on the Saubier.com web site.

We’re always excited when Lapua decides to expand its line of cartridge brass. For 22-250 shooters, who will now have a new ultra-high-quality brass option, the news of Lapua 22-250 brass must be like an early Christmas present.

Link to Lapua 22-250 Brass Photo

22-250 Remington Cartridge

Above is a QuickDESIGN diagram of the 22-250 Remington cartridge based on CIP Metrics converted to English units. This is NOT the official print for the new Lapua 22-250 brass, which may vary slightly in dimensions. We suggest you get the actual production brass in hand before ordering new chamber reamers or dies.

Permalink Bullets, Brass, Ammo, New Product, Reloading 2 Comments »
December 5th, 2009

Benchrest Basics by Peter Cronhelm

If you’re not familiar with the short-range benchrest game, and want to learn more about this most precise of all shooting disciplines, Canada’s Peter Cronhelm has prepared an excellent summary of Benchrest Basics. Cronhelm covers everything from the origins of the PPC cartridge, to the special lingo used at short-range benchrest matches.

Terminology
Bughole: Very small group.
Mothball: The 10-ring on the standard Benchrest Target.
Tomato Stake: A worn out or otherwise inaccurate rifle barrel.
Screamer: A group measuring less than 0.100″ at 100 yards or less than 0.250” at 200 yards.
Weather Report: A Group “scattered” as a result of poor wind doping.
Wailing Wall: Place where targets that have been scored can be viewed by competitors.
Dope the Wind: Ccompensate for the effects of wind by shifting aiming points on the target.

PPC Viper Benchrest Rifle
‘Ultimate PPC’ by Speedy with engraved Stiller Viper action.

Competition — Benchrest for Group
Matches are usually shot at 100 and 200 yards with some including the 300-yard distance. Individual scores are determined by measuring the actual size of the 5-round group[.] Aggregate scores are the average of all the groups shot over the course of the match. [In short-range benchrest for group] the placing of the group on the record target is not considered, only the size of the group.

Borden Benchrest Rifle

At the top levels, 5-round groups are usually a single ragged hole in the target. To ensure that the competitors fire 5 rounds into the target, a moving backer paper is installed behind the record target. This way it is easy for the match officials to see that all 5 rounds were fired. For each target, there is normally no limit to the number of sighting rounds a competitor may fire, but there is a time limit for record fire.

A total of 5 groups (per class) are fired in a typical Benchrest match. Winning aggregate scores are commonly in the 2s (less than 0.3 inches), with individual groups in the 1s now common, and individual groups in the zeros (less than 0.1 inches) becoming more common.

Benchrest Targets

How is it possible to fire a group measuring only 0.1 inches across with a bullet that is 0.243 inches in diameter? Group sizes are measured from center to center of the two widest bullet holes. As a result bullet size is removed from the equation and groups from different caliber rifles can be compared on equal terms.

Canada NFA crest
If you want to learn about “point-blank” BR, give Peter’s well-written article a read. Found on the Canadian National Firearms Assn. website, Peter’s fact-filled summary provides a quick but thorough explanation of the rules, gear, and shooting styles used in the short-range benchrest game.

Black Rifle and Targets photos courtesy Jim Borden, www.BordenRifles.com.

Permalink News 1 Comment »