PCP efficiency

you dont have it to 'hunting efficiency' spec if your getting more than 2 clips per fill lol .. its not a shot count competition except as a selling point imo and when theyre tuned right its usually about half of what is advertised or less from what ive seen .. but its variable depending on how you set it up .. im sure you could detune it and use a light pellet and get 200 shots per fill .. 

http://www.calc.sikes.us/1/

If you run the calculations often enough like I do, it’s worth spending a few minutes to put it into a spreadsheet.

http://www.calc.sikes.us/1/index.php

I had spent some time in my garage last weekend looking for a tune to maximize the shots per fill. I've done it for my Impact Ultra Compact and my Dreamline Ultra Compact:

link to impact test

link to dreamline test

(sorry, had to post links to instagram since I didn't have the pictures at hand to directly post them).

The funny thing is that the most efficient tune in terms of liters of air per shot isn't necessarily also the tune that gives you the highest amount of shots per fill. I noticed that on really low regulator pressures it isn't as efficient as on higher pressures and somewhere in between there is an optimization for shots per fill. The reason that I went for maximum shots per fill is because both airguns have a short barrel so maximizing shot count is needed to counter the increase in air consumption.

Your figures work out to 1.40 fpe/ci which is quite good. That tells me your HST isn’t too high and you aren’t getting any significant hammer bounce. No need to touch it unless you aren’t happy with the ES.

You are welcome to download a spreadsheet I have created and shared on here if interested. It is Windows based. It will store twenty shot strings up to 185 shots per string and up to three strings can be compared to each other on one sheet. Plus many other features.

I do have a .30 cal MKII, but with 580cc bottle, so not good to compare to. Plus I run mine "much hotter".

Free spreadsheet from Triggertreat - Airgun Nation

My .30 Cal rifles all have tubes not bottles. And not because a preference.

I am of the opinion that .30 is for hunting more than to make bigger holes in paper.

From 840 to 890 fps you have enough Hunting Energy Units to take anything lesser than a javalina if you place the shot correctly.

You will have more shots per fill it you set your rifle to shoot at 840 fps.

I do not think there's a golden rule that you ought to follow.

My crown .30 is shooting 920 fps 32 shots @ 155-158 bar 2300psi. Looks good unless I screwed up the numbers.