Brocock/BRK Brocock Pathfinder XR .177 pellet velocity and energy (part 3 - with corrected ft/lbs energy data)

[Hammerhead]

	PELLET​
	11/9/2023​	11/9/2023​	11/9/2023​
Pellet Brand	JSB​	JSB​	JSB​
Pellet Weight (gr)	13.43​	13.43​	13.43​
Temperature	54​	54​	54​
Power Adjustment	Low​	Medium​	High​
Shot Count	12​	11​	13​
Low (fps))	652​	728​	768​
Hi (fps)	663​	747​	772​
Avg (fps)	660​	741​	770​
Spread (fps)	11​	19​	4​
STD Dev (fps)	2.6​	5.6​	1.5​
Energy (ft/lbs)	12.99​	16.38​	17.69​

	PELLET​
	11/9/2023​	11/9/2023​	11/9/2023​
Pellet Brand	JSB​	JSB​	JSB​
Pellet Weight (gr)	16.2​	16.2​	16.2​
Temperature	54​	54​	54​
Power Adjustment	Low​	Medium​	High​
Shot Count	10​	10​	11​
Low (fps))	605​	670​	698​
Hi (fps)	612​	696​	714​
Avg (fps)	610​	689​	710​
Spread (fps)	7​	26​	16​
STD Dev (fps)	2​	7​	4.7​
Energy (ft/lbs)	13.39​	17.08​	18.14​

	SLUG​
	11/11/2023​	11/11/2023​	11/11/2023​
Slug Brand	Zan​	Zan​	Zan​
Pellet Weight (gr)	10​	10​	10​
Temperature	45​	45​	45​
Power Adjustment	Low​	Medium​	High​
Shot Count	13​	13​	13​
Low (fps))	684​	791​	814​
Hi (fps)	698​	793​	823​
Avg (fps)	693​	792​	820​
Spread (fps)	14​	2​	9​
STD Dev (fps)	4.5​	0.9​	2.7​
Energy (ft/lbs)	10.67​	13.93​	14.93​

	SLUG​
	11/11/2023​	11/11/2023​	11/11/2023​
Slug Brand	Zan​	Zan​	Zan​
Pellet Weight (gr)	13​	13​	13​
Temperature	45​	45​	45​
Power Adjustment	Low​	Medium​	High​
Shot Count	13​	13​	12​
Low (fps))	624​	703​	740​
Hi (fps)	636​	726​	754​
Avg (fps)	631​	717​	748​
Spread (fps)	12​	23​	14​
STD Dev (fps)	2.9​	7.6​	4.6​
Energy (ft/lbs)	11.5​	14.34​	16.15​

 

[ctshooter]

How are you calculating those FPE numbers? They are all way too high.

Using the calculator here: https://www.pyramydair.com/widgets/?Units&u=14

The Zan 10gr @ 820 fps = 14.93 fpe. Not the 26.9 you show above. I would recheck your results.

 

[L.Leon]

How are you calculating those FPE numbers? They are all way too high.

Using the calculator here: https://www.pyramydair.com/widgets/?Units&u=14

The Zan 10gr @ 820 fps = 14.93 fpe. Not the 26.9 you show above. I would recheck your results.

I posted the same about his Part 1 Pathfinder numbers, his energy calculations are way off.

 

[Hammerhead]

How are you calculating those FPE numbers? They are all way too high.

Using the calculator here: https://www.pyramydair.com/widgets/?Units&u=14

The Zan 10gr @ 820 fps = 14.93 fpe. Not the 26.9 you show above. I would recheck your results.

The numbers are from the FX chronic app.

 

[Hammerhead]

I posted the same about his Part 1 Pathfinder numbers, his energy calculations are way off.

Tomorrow I will use both apps you recommended and see if they come up with identical numbers. And will correct my tables.

 

[okieairgunner]

Man I am currently loving my BRK Pathfinder in .177! My man Derrick Wall had done an amazing job on getting this gun to shoot so well! I’m averaging 805fps with 13.43gr Rangemaster Kigs. He also did a wonderful job on the trigger! Check this out. This is 5 shots at 55 yards in about a 6mph wind from left to right.

 

[Joedirt199]

Bullet Energy Calculator (Foot Pounds)

This reloading article provides a ballistic calculator that helps you compare different weight bullets, at any velocity, to see which one will hit harder.

www.larrywillis.com

Here is the one I use. Can put 3 different projectiles in with their velocities and get 3 results at the same time.

 

[starlingassn]

Tomorrow I will use both apps you recommended and see if they come up with identical numbers. And will correct my tables.

change the pellet weight in the pellet settings section of the fx app to the correct weight of the pellets/slugs youre shooting.

thats why your fpe numbers are off.

i have wondered why my fpe numbers were wrong before,
and it was because i didn't have the pellet weight set correctly in the app.

 

[Hammerhead]

Thank you for the tip. I will do that and correct my tables.

 

[MysticalDragon]

change the pellet weight in the pellet settings section of the fx app to the correct weight of the pellets/slugs youre shooting.

thats why your fpe numbers are off.

i have wondered why my fpe numbers were wrong before,
and it was because i didn't have the pellet weight set correctly in the app.

I was wondering if that wasnt the case but I've not played around with the fx app enough to know for sure so held off mentioning it.

 

[starlingassn]

I was wondering if that wasnt the case but I've not played around with the fx app enough to know for sure so held off mentioning it.

lol i knew that was it the second i noticed.

i spend alot of time with my fx chrono,
best tool ive ever bought next to a torque screwdriver

 

[MysticalDragon]

lol i knew that was it the second i noticed.

i spend alot of time with my fx chrono,
best tool ive ever bought next to a torque screwdriver

yep I was suspecting it as soon as I saw it but was deferring to those more experienced as I didnt was to cloud it up too much. Ive seen it a few times when chronoing and its like huh? whys it high. oh wait its the pellet weight that had been changed from the last time it was used.

Nice ot see i was on the right track

 

[Hammerhead]

Man I am currently loving my BRK Pathfinder in .177! My man Derrick Wall had done an amazing job on getting this gun to shoot so well! I’m averaging 805fps with 13.43gr Rangemaster Kigs. He also did a wonderful job on the trigger! Check this out. This is 5 shots at 55 yards in about a 6mph wind from left to right.

View attachment 405462

View attachment 405463

Who is Derrick Wall and where can i find some info on his work? Does he only work on BRK air rifles?

 

[okieairgunner]

Who is Derrick Wall and where can i find some info on his work? Does he only work on BRK air rifles?

@zx10wall works not only on BRK guns but most any guns. I am not sure I think he does not work on FX guns. He did and trigger job on my Ghost and did a trigger job on my pathfinder Xr and did some work to get more power out of it. Went out and shot today and did this at 55 yards with just a step stool and sticks.

 

[Hammerhead]

@zx10wall works not only on BRK guns but most any guns. I am not sure I think he does not work on FX guns. He did and trigger job on my Ghost and did a trigger job on my pathfinder Xr and did some work to get more power out of it. Went out and shot today and did this at 55 yards with just a step stool and sticks.

View attachment 406084

Thank you for the fast response. I will check him out.