BHA Performance Record
Measured before and after
Christensen Arms Model 14 Documented system evaluation
Before
Factory-ammunition baseline
1.54 in CTC
5 shots at 100 yards · center-to-center group diameter
Five-shot group; a separate sight-in shot was excluded, as stated in the supplied report.
Factory ammunition with 143 gr Hornady ELD-X
Open target detailAfter
Final rifle-specific configuration
0.48 in CTC
5 shots at 100 yards · center-to-center group diameter
Full five-shot group including the flyer. The smaller 0.28-inch notation excludes that shot and is not used for this comparison.
Custom ammunition with 140 gr Sierra MatchKing
Open target detailTarget detail images are illustrative and are not displayed at an equal physical measuring scale. Compare the recorded center-to-center measurements, not the apparent image sizes.
68.8%smaller measured group diameter
56.1%lower velocity SD
| Measurement | Before | After |
|---|---|---|
| Ammunition | Factory ammunition with 143 gr Hornady ELD-X | Custom ammunition with 140 gr Sierra MatchKing |
| Group diameter (CTC inches) | 1.54 in | 0.48 in |
| Average velocity (fps) | 2,701 fps | 2,714 fps |
| Standard deviation / SD (fps) | 16.4 fps | 7.2 fps |
| Extreme spread / ES (fps) | 48.6 fps | 26.0 fps |
Each group contains 5 shots at 100 yards. Velocity statistics describe the same 5 shots in each configuration. The chronograph model was not specified in the supplied record. CTC means center to center; fps means feet per second.
What these results mean
Results reflect the combined equipment and ammunition changes; individual effects were not isolated. One five-shot group per configuration is shown. The baseline excludes a separate sight-in shot; the final group includes the flyer. Results are specific to this rifle and test, not a performance guarantee.
Evaluate the existing system. Document the result.
This Christensen Arms Model 14 was evaluated and configured as an existing-rifle project. The documented outcome reflects the combined setup and ammunition changes, not a comparison that isolates any single modification.
BHA evaluation, setup & development
- Glass bedded the action as part of the accepted existing-rifle project.
- Replaced the scope rings with Area 419 Match scope rings and installed an Arken EP5 5–25 scope.
- Replaced the sling-swivel-mounted bipod setup with an Area 419 Arca rail and an Accu-Tac bipod.
- Installed a dedicated Replicator Ventus suppressor in place of the previously shared suppressor. Rifle-specific ammunition development used the new suppressor.
- Developed rifle-specific custom ammunition; the final documented configuration used the 140 gr Sierra MatchKing. Loading recipes remain private.
Test context
The supplied report records 100-yard groups with five shots per target and chronograph sample. The separate baseline sight-in shot is excluded, and the final five-shot group includes the flyer. Ammunition development was performed with the new dedicated suppressor installed. Exact chronograph model, front/rear firing supports, and environmental conditions were not supplied. No mechanical-rest use or measured 1,000-yard group is claimed for this case.
Illustrative constant-angle scaling only
1,000-yard baseline group projection
Constant-angle projection of the measured 100-yard group diameter. These are not measured 1,000-yard groups or total-dispersion predictions. Additional velocity-driven vertical spread, wind, and other downrange effects are excluded.
Measured 100-yard group diameters scaled by 10. This graphic is not a bullet-drop chart or a firing solution.
Source note
Measurements and velocity statistics are transcribed from the supplied public report, not remeasured from photographs. The final photograph annotates approximately 0.479 inches for the full group, rounded to 0.48 inches in the report; its smaller 0.28-inch notation excludes the flyer and is not used here. Target details reproduce the frames already visible in the report, without altering impacts or annotations. No handwritten loading recipe appears in these details; lower source-photo fields were already covered. The report names the suppressor Ventus 30K; the owner describes it as Ventus K, so the work summary uses the shared Ventus name pending confirmation. The owner’s latest work description adds the specific optics and Arca/bipod equipment to the report’s earlier summary.
Have an existing rifle project?
Contact Brian to discuss evaluation, setup, and ammunition development for your rifle. This record is specific to the documented rifle and test, not a performance guarantee.