What's the best SD you got among your PCP Rifles, Pistols?

[Liontracks]

For those of you who do the Chrono stuff, what's the best Standard Deviation of fps you got for how many shots? 

 

[DonC]

Morini pistol best. Anshutz 2002 PCP rifle.

 

[intenseaty22]

This was 2 days ago, 4 shots with my PT .25 KG Cricket. Will have to look at longer strings later, I don’t shoot this gun a whole lot, so

 

[Liontracks]

For how many shots on Morini?

 

[buckyusn]

Maximus Euro shooting H&N Barracuda Extreme 9.57GR - 15 shots STD Dev. 3.5

 

[douger]

fx bobcat 25 cal 75 shots avg 930.0 stdev 2.9 min 924 max 936 

 

[Yo]

One of my after market added on HUMA regulated 177 Daystate Renegades had a 1fps SD throughout 80 shots and most shots I tested were 30 at zero standard deviation. Had to do it again since I thought the chrony was broken. My other HUMA 177 Renegade averages 1-2 std dev throughout 80 shots. Both shoot great. Both added on aftermarket and weren't originally regulated. Actually didn't need regulators IMHO.

 

[Liontracks]

One of my after market added on HUMA regulated 177 Daystate Renegades had a 1fps SD throughout 80 shots and most shots I tested were 30 at zero standard deviation. Had to do it again since I thought the chrony was broken. My other HUMA 177 Renegade averages 1-2 std dev throughout 80 shots. Both shoot great. Both added on aftermarket and weren't originally regulated. Actually didn't need regulators IMHO.

That's amazing SD. So do you give the credit to HUMA? What was the SD before HUMA?

 

[scratchcoobster]

Here are some of my strings -

Brocock Sniper XR .25 Cal - JSB King 25.39gr

- 40 shot string Std. Dev = 1.86 ES = 7fps 861/868 fps



Brocock Sniper XR .25 Cal - JSB King 25.39gr

- 40 shot string Std. Dev. = 2.36 ES - 12 fps 856/868 fps



FX Crown 600 mm Barrel .22 Cal. - JSB Exact Jumbo 18.13 gr.

- 20 shot string Std. Dev = 2.47 ES = 9 fps 928/937 fps



FX Dreamline Tac Standard .25 Cal - Air Arms 25.39 gr

- 20 shot string Std Dev. = 4.17 ES = 19 fps 902/921 fps



FX Dreamline Tac Standard .22 Cal - JSB Exact 15.89 gr.

- 20 shot string Std. Dev = 1.63 ES = 4 fps 912/916 fps

- 30 shot string Std. Dev. = 1.96 ES = 7 fps 905/912 fps



*Daystate Red Wolf Safari .22 Cal - JSB RD Monster 25.39 gr

- 20 shot string Std Dev = 3.40 ES = 12 fps 972/984 fps

*(shot "out of box" dirty barrel, direct from factory, first 20 shots)



Also note - all pellets were directly from tins, no sorting, weighing, lubing, etc.



Sorry about the alignment - it looks fine in the editor, but bad when submitted. Not WYSIWYG.

 

[Guest]

Daystate Huntsman Revere .177, JSB 10.34 grain pellets:

Average 897 

Min 893

Max 901

Ext Sp 8 

St Dev 1.88

Count 63

 

[Yo]

One of my after market added on HUMA regulated 177 Daystate Renegades had a 1fps SD throughout 80 shots and most shots I tested were 30 at zero standard deviation. Had to do it again since I thought the chrony was broken. My other HUMA 177 Renegade averages 1-2 std dev throughout 80 shots. Both shoot great. Both added on aftermarket and weren't originally regulated. Actually didn't need regulators IMHO.

That's amazing SD. So do you give the credit to HUMA? What was the SD before HUMA?

They were SD of 2-3 prior so it did improve on specs over chrony but accuracy seems to be the same tack drivers from before so to me it was a waste of money since my manometers only read regulated pressure now and have to count shots.

 

[Steveoo]

This is honestly real, after the tuning work i highlighted on here reg the FAS 6004 pistol, i went from 7- 8 fps deviation to barely 2 fps across 10 shots using H & N Finale. I have never managed better.