Hi guys, wanted to share my journey with my FX Impact m3. I bought it at the end of last summer, it is a 177 with a 600 barrel running a stock tune. I bought it mainly to plink at 50-200m, as well as pest control on my farm. I'm shooting JBS diabo match exact heavies, 10.34gr as I have a bunch of packs sitting around. I do plan on tuning it but Id like to understand and see what the stock tune is capable of first.
My first time shooting it was a little bit of a let down, 1.5-2.5" groups at 50 yards, just under 1" at 30 yards. I called the dealer and they said it will take acouple hundred rounds to settle in. I did a bit more shoot, mostly pest control and I feel its more than accurate for hunting. I didn't shot any more paper last year, I've got a 6.5cd that gets most my attention when it comes to precision work. Anyways, I figured with the nice weather I'd spend some time with the impact, and if i can get it shooting nicely Ill invest in a couple other barrel/liners. It would be cool to shoot 22 and 30 cal slugs.
I filled it last night to 220 bar last night, by the morning it was at 195 tank pressure, but the 1st reg ad crept up to 170 (from a stock 150). I noticed the second had crept up to 95 from I believe 85 stock.
Today we had zero wind so I figured it would be a good day to get out for some shooitng. The first 3 shots where between 989 and 978, then it settle around 962 to 970 with he odd shot between 949 and 953. First couple groups where around 2" at 50m shooting from a bench with front and rear bags. Eventually things settled and I shot 10, 5 shot groups between 1.5" to 5/8". I also noticed after a couple of shot the 1st reg also reset to 155.
My 22 produces 1/4" or tighter at 50m so I am confident this is not user error (I am a competent shooter with a military background).
Is this normal?
I was expecting groups under 1/2" at 50m without much difficulty, are my expectations out of unrealistic?
Would this be regulator creep and is this covered under my warranty?
Any suggestion?
Also, when I go to tune it, should I start with the valve adjuster fully open or keep it where it is?
Thanks, K