FX Impact M3 .177 50 yard penetration test 13.43gr JSB REDESIGN vs 15gr NSA slug

So I have that tuned to shoot the JSB MONSTER REDESIGN @850 AND ITS A LASER THE GUN LIKES THEM MORE THAT ANYTHING ELSE SO FAR it also shot the 12.5gr NSA very well but I only got the sample pack so I didn't bother tuning it to perfection as it's always sold out but the 15gr NSA is usually available and seem to shoot very well at low speed I'll have to chrono it and shoot some groups the get back to you guys with the results
 
Thanks for that info. I've been shooting a new FX Dreamline .177 and I've been through a tin of the 10.34 heavies. Now I am eyeing these Monsters and Redesigned Monsters. They shoot great in my Marauder at around 910 fps, but I was impressed with what I saw you pull off in your video. Now if the rain will stop, I'll see what's what.