Meet BOOMER! My 17″ 338 Lapua Magnum
After I conducted the 338 Lapua Magnum barrel length and velocity test (with the help of the guys at Precision Addiction), I was left with a very well-worn 17″ tube. Rather than send it to the scrap heap, I decided to finish it up on the lathe and see how it shot.
Looks good, doesn’t it?
Specifications are as follows:
- Defiance Machine 338 Deviant action
- Accuracy International AX chassis system
- Timney 517 trigger
- Surefire brake
- Sierra-7 bipod
- Spuhr ISMS scope mount
- Nightforce 8-32×56 NXS scope
You’ll note the brake just barely passes the fore end of the rifle. That is OK with me.
How does it shoot?
I loaded up some 250 and 300 grain Sierra MatchKings and headed to the range to find out…
Boy, touching off the trigger of a 17″ 338 Lapua with a brake is a violent experience. Far worse than a 16″ 300 Win Mag (don’t ask, but click the link if your are curious), and more along the lines of a 50 BMG pistol indoors with no ear protection. I fired 22 rounds (2 to get a zero, and 4 5-shot groups) and had enough.
The 300s grouped a little over an inch and the 250s in the .800s. Not too shabby for a very short and very worn barrel that made A LOT of noise.
BOOMER! My short 338 Lapua, don’t try this at home…