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

Hammerhead · Nov 11, 2023

	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 · Nov 11, 2023

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 · Nov 11, 2023

ctshooter said:
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 · Nov 11, 2023

ctshooter said:
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 · Nov 11, 2023

L.Leon said:
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 · Nov 11, 2023

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 · Nov 12, 2023

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 · Nov 12, 2023

Hammerhead said:
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 · Nov 12, 2023

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

MysticalDragon · Nov 12, 2023

starlingassn said:
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 · Nov 12, 2023

MysticalDragon said:
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 · Nov 12, 2023

starlingassn said:
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 · Nov 13, 2023

okieairgunner said:
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 · Nov 13, 2023

Hammerhead said:
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 · Nov 13, 2023

okieairgunner said:
@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.

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

Hammerhead

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ctshooter

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L.Leon

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Hammerhead

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Hammerhead

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okieairgunner

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Joedirt199

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Bullet Energy Calculator (Foot Pounds)

starlingassn

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Hammerhead

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MysticalDragon

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Hammerhead

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