Impact .30 Hybrids FPS

[ttg_tyler89]

What FPS are those of you who are shooting .30 FX Hybrids in an impact seeing for the best accuracy? 

I am shooting them in an m3 compact 500mm and wanting to tune it for best accuracy looking for a starting point obviously I want the highest fps possible but am curious if higher fps with them will kill accuracy surely they have a sweet spot.



FX M3 Slug liner carbon sleeve

 

[whitetail17]

In 700mm barrel , heavy liner, with carbon sleeve, been using 960-969

 

[TDK]

I don't think you'll be able to shoot them too fast. FX description says best accuracy from 960-1020fps, but it is unclear if that is referring to the original 1:37 twist barrels, the second 1:26 twist, or latest 1:22 twist. I haven't tried the hybrids in the current 1:18 heavy barrel, just the standard (for 2021 at least) 1:22 700mm. You may want to try both, but the 1:22 should be sufficient. My M3 is stock (No slug kit spacers), reg @150b, 957fps. They shoot around 1MOA from 50 yards out to 200 yards. Briefly tried them with reg @140b, 940fps and they still seemed about the same accuracy there. 68 whiskey boys reported running 965-970fps on two different guns, one with slug kit and one without.

I picked 150b as a limit since I wanted to get 2 full mags off a fill, and I just make it. Also, the stock hammer spring starts being maxed out somewhere around the 155-160b range I think.

Just make sure you aren't shooting at the top of the speed curve for a reg pressure. That will be loud and inaccurate because the valve is open too long, not because the slugs are going too fast.

 

[Skidoo165]

I shoot them at 990 with the original slug A liner and it's a laser beam

 

[DesprateRado]

940fps, 16 macro, 4.25 micro, 145 reg. But at 600mm/bbl

The photo is at 50 yards, the wonky one is kinda my fault but still one of my best groups tho I've only ran one mag of hybrids

 

[Seeker]

The most accurate slug in .30 for me at 50 meters. Standard superior liner with a 1:22" twist. 500mm barrel pushing them at 935FPS.