November 7th, 2008

The Hottest Chamberings for 1000-Yard Shooting

The question is often asked “what’s the best cartridge for 1000-yard Benchrest”. This immediately stirs a debate between fans of the “Big Thirties”, 6.5mm and 7mm advocates, and a few staunch 6mm defenders. In truth, a wide variety of cartridges, from the 6mmBR all the way up to .338 Lapua magnum, can do well at 1000 yards.

However, there is clear statistical evidence that magnum-class 30s are still the top dogs in the 1000-yard game. Steve Shelp, who shoots with the Hawks Ridge Gun Club in North Carolina, has amassed statistics from years 2000 through 2006, recording all the calibers and chamberings used in the matches of the North Carolina 1000-yard Shooters Association. The data is further sorted by Light Gun (LG) and Heavy Gun (HG) classes. Steve has even been able to filter the data to include Relay Winners and Shootoff Participants. Steve has also created tables that show the Top 30 Groups and Scores in both LG and HG classes.

Below is a table showing the Top 15 Chamberings among shootoff participants, for combined LG and HG Classes from 2000-2006. We have totaled the Big 30s in this group of 15, and the large 30 Calibers (red dots) represent 66% of the total. There are 2064 entries in this set of Top 15, and 1355 are 30 Calibers.

1000-yard shooting

The next chart includes ALL LG and HG Relay Winners from years 2000-2006. Steve has sorted the data by bore diameter. The two dominant calibers among Relay Winners are: 30 Caliber (.308) at 60%, and 6.5mm (.264) at 27%. Presumably most of the 6.5mms are 6.5-284s, but there are some larger 6.5mm wildcats as well. NOTE: When you look at Light Gun Relay Winners only, the percentage of 6.5mms rises while the percentage of 30 Cals falls. Overall however, the big bore 30-Caliber rifles are still “King of the Hill” in 1000-yard competition.

Steve Shelp’s data is contained in three Microsoft Excel spreadsheets. Click the links below to download the collected 2000-2006 data.

Top 30 IBS Scores and Groups

1000yd Chambering Statistics (LG, HG, and combined)

1000yd Participants by Bore Size (Includes Relay Winners)

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