Sunday GunDay: Record-Setting 6BRA 1000-Yard BR Rifle

Kulzer Sets Eight IBS 1000-Yard IBS Benchrest Records with 6 BRA Rifle
Report by Alex Wheeler
In 2021, Glenn Kulzer of Dillon, Montana had a season that will go down in 1000-Yard Benchrest history. Glenn set eight IBS records in 2021 at the Deep Creek range in Missoula, and then was named IBS 1K Shooter of the Year. What makes this so incredible is not just the number of records but the records themselves. Normally when a world record small group is shot that’s a singular event — never accompanied by Aggregate records set by the same shooter. Glenn’s IBS record small group wasn’t a one-time lucky string. Consider this — Glenn nailed that historic small group, but also recorded multiple IBS Aggregate records in 2021. And Glenn set these IBS Heavy Gun records actually using his 6 BRA (6mmBR Ackley) Light Gun! Mighty impressive.

[Editor: These were impressive records that have stood the test of time. A quick search of the IBS record site shows Glenn Kulzer still holds six of the ten listed IBS 1000-yard Heavy Gun records. Plus, Glenn broke the Light Gun 20-Target Agg group record, but that was later bettered by Tom Mousel.]

1000-yard Benchrest Aggregate records represent a series of targets shot over the course of multiple matches during a season. That really takes any luck out of the equation. You have to keep the rifle shooting at its peak all year long. It’s the ultimate test of accuracy. But the small groups do get the most notice and Glenn also broke the small group record with a remarkable 2.6853″ 10-shot group (photo below).

Eight IBS Records Set by Glenn Kulzer in 2021

NOTE: Most of these records have been broken. In 2025 talented Montana shooter Tom Mousel set 8 multi-match and multi-target records, including an amazing 12-target Group Agg of 3.8790″ and 12-target Score Agg of 99.5.

This IBS record 1000-yard group, and Glenn’s other IBS records, were shot with Roy Hunter’s 103gr “A” bullet, Hodgdon H4895 powder, CCI BR4 primers, and Alpha Munitions 6 BRA brass. However, Glenn does use Lapua brass for some other 6 BRA rifles.

Glenn’s record-setting rifle is a Light Gun with a common setup used in long range Benchrest. The rig features a Borden BRM drop-port action with a Bix’n Andy trigger. The action is glued and screwed into a industrial wood laminate Deep Creek Tracker stock, a predecessor of the McMillan LRB. The Krieger barrel is a 4-groove, 1:8″-twist Heavy Varmint contour chambered for the 6 BRA (6mmBR Ackley) cartridge. All of Glenn’s rifles are topped with Vortex Golden Eagle scopes. Glenn notes that his Vortex Golden Eagles have show excellent point-of-aim stability when tested with a scope checker. The front rest was a Sinclair competition with Edgewood front bag, Field & Cave outfitters front rest plate, and speed screw. For rear support Glenn uses an Edgewood LRB rear bag.

Loading Procedures for Record-Setting 1000-Yard Shooting
Glenn’s loading process is pretty simple. He full-length sizes every time, bumping the shoulders back about .003″. Powder is weighed to the kernel, and bullets are seated with a Wilson seater. NOTE: Glenn does does not anneal his brass. He sorts primers by weight but does not otherwise measure them by dimensions. He seats the primers by feel using a relatively inexpensive primer seating tool — nothing fancy.

Glenn worked up a trim-and-point recipe for this lot of bullets based on group size. Load development is all performed at 1000 yards using the group ladder method. Glenn’s record load ended up being 30.3 grains of H4985 powder with the 103gr bullet seated very far into the rifling with .005″ of neck tension. This gave a velocity of 3030 fps in the 28″ Krieger.

Glenn shot Alpha Munitions 6 BRA brass all year with the .080″ flash hole. This year he shot Roy Hunter’s 103gr “A” bullet set quite deep into the rifling. NOTE: This deep jam has proven to be very stable IF you barrel likes it. Glenn used CCI BR4 primers and Hodgdon H4895 with .005″ of neck tension. His load delivered 3030 fps out of a 28″ barrel. NOTE: This is a “HIGH NODE” that may not be possible in an average barrel with different brass. Many 6 BRA shooters are reaching a 3000+ fps node, but you should always start low and work up. Some 6 BRA barrels will max out at 2950 FPS with 103-108gr bullets.

Glenn Interview Part I — All About the Rifle that Set Eight 1000-yard Records

Glenn Interview Part II — Load Development Process and Loading Methods

Glenn Interview Part III — Barrel Cleaning Discussion

Glenn Kulzer also shot his impressive 6 BRA at the 2021 IBS Nationals at Deep Creek (shown above). This Deep Creek range photo is by Forum member Dave Way.

Setting Records in June 2021
Report by Alex Wheeler
It was a typical match for June, nothing unique about it. Saturday was actually looking to be a really great day. Overall it was good but not great. Sunday had a clear blue sky with bright sun. I looked through a couple of scopes before the match and it was milky. I probably would have shot that relay at 30-35 power. But somehow Glenn Kulzer was able to pull off the best heavy gun group ever shot in 1000-yard IBS competition. With that group Glenn also broke the 6-match IBS Group Aggregate record (which was later broken by Tom Mousel in 2025). The group was no fluke, this rifle also shot great in previous matches with small groups at 1000. To my knowledge this may be the only time a small group record AND an Aggregate record were broken in the same season by the same gun. The ultimate achievement.

On June 13, 2021, Glenn shot a 2.6583″ 10-shot group, all shots in the 10 Ring for a 100 score. This group still stands as the current IBS Heavy Gun 1000-Yard 10-shot group record AND score record. It was also part of Aggregate Records listed above.

About Glenn Kulzer — Rising Star in the Long-Range Benchrest Game
by Alex Wheeler
Kulzer is a pharmacist in Dillon, Montana. The attention to detail required for his job crosses over to Long-Range Benchrest. He started off a very competitive shooter right from the start. I have said it many times, but benchrest is not an elitist sport. Hard work and dedication will always rise to the top. Glenn took the sport seriously from the beginning. Accordingly, he displayed a rapid learning curve and quickly surpassed some of his mentors in match results. Glenn tunes mostly at 1000 yards using the Deep Creek variation of ladder testing. He will also load and tune at the range to try and nail the best tune for the conditions. Again, it all about the work done by competitors. But Glenn’s success shows that a bright, hard-working shooter can rise to the top of the game in just a few seasons.