Tuning Hm 1000x 25 cal shot count and power

[Airgunmann]

Hi I've been tuning on my hm 1000 x trying to reach my goal of 70 shots around 60 ftlbs it has a power plenum and peek poppet with cobra chamber plus a ssg and using a Huma reg well I decided to try lower reg settings I tried a 140 bar and was at 907 with out the power plenum in place so I dropped the reg to 130 bar and put on the power plenum with out touching the ssg but I removed the 150 tp restriction so it's restriction is .200 at the barrel I was in the 940s with 34 gr MK2 at 130 for 12 shots I dropped the ssg spring pressure down and filled to 3500 psi took 58 shots lowest was 906 highest was 924 last shot of 906 was off the reg 18 fps spread lowest power was over 61 fpe and highest was 924 for just over 64 fpe looks like I'm going to have to try 125 reg setting now 3600 psi would probably get about 63 to 64 shots all over 60 fpe kind of amazed at the power it's making at 130 bar please share thoughts and opinions nothing better to do but sit and tinker when it's cold outside 

 

[Airgunmann]

I was running 14 or 15 fps up till the last shot of 906 so either the reg is working better or the cobra chamber is working better at the lower pressure I don't know which but 14 or 15 fps across 57 shots at 60 plus fps isn't to bad I'll give 125 bar a try tomorrow and use my small 90 cu in tank for psi measurements to see what kind of efficiency it's at seems to be about 1.1 area right now with a average about 62 fpe 

 

[Airgunmann]

Not as impressive as mubhaurs but am making over 62 fpe at 125 bar 14 fps spread I tried from 3600 psi to 1600 psi for 62 shots spread of 18 fps and a avg of 910 fps too 5 mags at over 60ftlbsi think I'm going to call that good I'm running a peek poppet cobra mod 61 gram hammer and a ssg and a Huma and a power plenum thanks to mubhaur 

 

[Airgunmann]

Huma reg seems to be less erratic at the lower bar settings was getting around 20 to 30 fps spreads at 150 bar area