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The 17 HMR has remained over the past decade as one of our most requested calibers, particularly for the Contender and G2 actions.

The high quality polymer-tipped bullets, along with just the right powder charge and bullet weight have lent to exceptional performance for many Bullberry customers.

Many of our customers in the South have regularly chosen the 17 HMR for squirrel and other small game when they want maximum potency and minimal tissue damage.

With careful shot placement the Bullberry 17 HMR "Match" chamber is difficult to beat. Of course, wind will disrupt any 17 caliber bullet so take care to know your conditions.

17 HMR "Match" Velocities


The Bullberry 17 HMR "Match" has now been on the market for a few years and is a well proven cartridge in both performance and accuracy.

It took three reamers to finally land on what Bullberry considers optimum accuracy, however. Initially we had our reamer made to Hornady specifications but were not happy with the results. The chambers were – by Bullberry standards – far oversized. A subsequent batch of about 8 barrels were chambered .002" smaller in diameter. Now, with our final reamer dimensions, our chambers are nearly .004" smaller in diameter than the original. This is giving us the accuracy we are always looking to achieve, without having a ruptured case problem as was predicted by Hornady early on, by shrinking the dimensions to just accept the ammo.

Velocity Tests

17 HMR pistolOur test gun in the photo features the 3rd generation chamber dimensions as referenced above.

Velocity tests were conducted on this 11" barrel, as well as on a full length test barrel, both using Hornady's 17 grain bullet. Below is the chart based on this barrel. All velocity tests were conducted using a 5 shot group.

Note: The average velocity of this 11 inch barrel is only 132 FPS slower than the 22" carbine barrel (data shown below).

 

 

11 inch barrel

Shot 1 2358 fps
Shot 2 2332 fps
Shot 3 2336 fps
Shot 4 2349 fps
Shot 5 2313 fps
Average 2338 fps
Spread 45 fps

 

About the accuracy in the pistol; Fred previously put 200 rounds through the gun to make certain we did not have a pressure related problem.

17 HMR targetsGroups #1 and #2 were shot with about a 5mph crosswind, left to right, in a rather intermittent manner. Then, unusual for our area, the wind went dead calm for groups #3 and #4. Group #5 had an increasing breeze that was moving toward the target that caused the vertical lift on the last two shots, as Fred had his target box on an upslope of a sand dune.

Needless to say, he was and is happy with these results. He feels its a half inch shooter in calm conditions. Group #3, that is okay at .438", had him excited. First four shots into one hole that measures .178". Then of course, he pulled one out with a quarter inch gap. There will be those of you out there that will shoot one hole groups.

All of these were shot at 103 yards from a solid bench, off the rest you see in the top photo. This system allowed Fred to have the crosshairs of his 6.5 x 20 Leupold rifle scope dead still on target. The pistol was also tested with a 3" wide target forearm. The rest is constructed to allow vertical adjustment of sight picture by simply pulling or pushing the grip forward and back on the "incline" of the rest. Pretty good system.

 

Full Length Test Barrel

The below tests were performed April 20, 2002 in the Bullberry Test Pit using a Dr. Oehler Sky Screen Chronograph Model 33 with Sky Screen III system. The first screen was set 6 feet in front of muzzle. Screens are spaced EXACTLY 10 feet apart. The test began with a new production 17 HMR "Match" Bullberry bull barrel 22" long. The purpose was to determine velocities at this length, and every inch shorter down to the practical minimum length of 10". After each group of 5 shots, we cut the barrel by one inch, recrowned it, and repeated the velocity test until we had reached our 10" pistol.

Fred had predicted higher velocities than were being reported at the time from Ruger and Marlin rifles, based on our tighter chamber tolerances. While this did not occur, it did prove his other theory that we would possibly see a maximum velocity in the 17- or 18-inch range. You will see in the performance breakdowns below that the maximum velocity was actually achieved in our 19-inch barrel test.

The HUGE surprise was in the short pistols having velocities so near the carbine length barrel. Our early accuracy test barrel in stainless shot only 132 fps slower than the original 22" blued chrome-moly carbine barrel. When we finished the test at the 10" length, we found the chrome-moly barrel to be only 241 fps slower than the 22-inch length.

 

22-inch barrel

 

21-inch barrel

Shot 1 2517 fps Shot 1 2560 fps
Shot 2 2472 fps Shot 2 2494 fps
Shot 3 2508 fps Shot 3 2494 fps
Shot 4 2515 fps Shot 4 2522 fps
Shot 5 2575 fps Shot 5 2543 fps
Average 2517 fps Average 2523 fps
Spread 103 fps Spread 66 fps

 

20-inch barrel

 

19-inch barrel

Shot 1 2570 fps Shot 1 2548 fps
Shot 2 2484 fps Shot 2 2520 fps
Shot 3 2500 fps Shot 3 2491 fps
Shot 4 2500 fps Shot 4 2557 fps
Shot 5 2522 fps Shot 5 2574 fps
Average 2515 fps Average 2538 fps
Spread 86 fps Spread 83 fps

 

18-inch barrel

 

17-inch barrel

Shot 1 2538 fps Shot 1 2524 fps
Shot 2 2507 fps Shot 2 2483 fps
Shot 3 2525 fps Shot 3 2495 fps
Shot 4 2542 fps Shot 4 2498 fps
Shot 5 2501 fps Shot 5 2526 fps
Average 2522 fps Average 2505 fps
Spread 41 fps Spread 43 fps

 

16-inch barrel

 

15-inch barrel

Shot 1 2526 fps Shot 1 2473 fps
Shot 2 2474 fps Shot 2 2464 fps
Shot 3 2486 fps Shot 3 2490 fps
Shot 4 2504 fps Shot 4 2491 fps
Shot 5 2473 fps Shot 5 2469 fps
Average 2492 fps Average 2477 fps
Spread 53 fps Spread 27 fps

 

14-inch barrel

 

13-inch barrel

Shot 1 2446 fps Shot 1 2431 fps
Shot 2 2398 fps Shot 2 2427 fps
Shot 3 2427 fps Shot 3 2431 fps
Shot 4 2468 fps Shot 4 2399 fps
Shot 5 2423 fps Shot 5 2406 fps
Average 2432 fps Average 2419 fps
Spread 70 fps Spread 32 fps

 

12-inch barrel

 

11-inch barrel

Shot 1 2394 fps Shot 1 2358 fps
Shot 2 2391 fps Shot 2 2332 fps
Shot 3 2359 fps Shot 3 2336 fps
Shot 4 2423 fps Shot 4 2349 fps
Shot 5 2366 fps Shot 5 2313 fps
Average 2387 fps Average 2338 fps
Spread 57 fps Spread 45 fps

 

10-inch barrel

Shot 1 2273 fps
Shot 2 2256 fps
Shot 3 2301 fps
Shot 4 2282 fps
Shot 5 2268 fps
Average 2276 fps
Spread 45 fps

Summary: This 10" barrel produced a velocity average of only 241 fps slower than the 22" length, and only 262 fps less than the best average of the 19" length.

All 5-shot groups were shot after a damp patch of Eezox was pushed through the bore. This was done to clean out any metal particles from the cutting operation and to assure a clean bore for each group.




 

 

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Bullberry Barrel Works, Ltd.
2430 West 350 North
Hurricane, UT 84737
Tel: 435.635.9866
Fax: 435.635.0348
• Mon-Fri, 8am to Noon & 1pm to 5pm