Hi,
I just shot my new FX Crown and really like the gun. It's designed to shoot the 18 grain pellet at ~900 fps on high settings. I'm planning to use this airgun as one of my options in the next AOA Extreme Benchrest 2022 and will need to increase the power to make it more competitive. My goal is to shoot a 25 grain pellet at hopefully 940+, the projected Phase 1 activity limit after all the mods, upgrades, and increasing regulator pressure including lots of testing...The recommendations from Utah Airguns is to start with the following:
Phase 1 activities which are underway:
Phase 2 activities TBD:
I will report the shot strings and outcomes of Phase 1 mods and testing in the next week or so but if anyone has additional recommendations, please reply.
Steve
I just shot my new FX Crown and really like the gun. It's designed to shoot the 18 grain pellet at ~900 fps on high settings. I'm planning to use this airgun as one of my options in the next AOA Extreme Benchrest 2022 and will need to increase the power to make it more competitive. My goal is to shoot a 25 grain pellet at hopefully 940+, the projected Phase 1 activity limit after all the mods, upgrades, and increasing regulator pressure including lots of testing...The recommendations from Utah Airguns is to start with the following:
Phase 1 activities which are underway:
- Upgrade to the HUMA Transfer Port (I ordered the gun with this upgrade) and high flow pellet probe
- Heavier hammer spring, also from HUMA
- Increase hammer spring by removing the stock, 2 full turns CLOCKWISE as a starting point.
- Test fps on chrono and begin increasing reg pressure in 5 bar increments to start until peak reached, adjust hammer spring as required
- Can go to 150-160 BAR as target maximum
Phase 2 activities TBD:
- Consider the slug tuning kit from HUMA and heavier hammer weight may be an option
I will report the shot strings and outcomes of Phase 1 mods and testing in the next week or so but if anyone has additional recommendations, please reply.
Steve