Weihrauch HW77K accuracy at 10m

10 meter distance shooting accuracy for Weihrauch HW77K SPRING air rifle, uploaded by SærSkyttern, at December 27, 2017. Test ID: #21 (SPRING = Spring powered)

Average accuracy for tested HW77K airgun is 0.5 cm (≈ 0.2 inch) horizontal and 0.4 cm (≈ 0.2 inch) vertical accuracy. Diagonal = 0.6 cm (≈ 0.2 inch) (from center-to-center of the hits). Tested distance was 10m. The details of test can be seen below shooter's description.

Range: 25m indoor, +16C, 88% humidity Scope: 3-9x40 Rest: Soda cradle, gun rested on rice-filled trouserlegs

Tested air rifle:

Type:	HW77K
Brand:	Weihrauch
Power:	SPRING
Aiming:	scope
Caliber	.177
Speed:	902 fps = 275 m/s
Energy:	J
Modified*	n

Ammunition:
JSB Exact, 0.475g,4.52mm

Result of shooting accuracy:

	horizontal		vertical
	cm	inch	cm	inch
1.	0.3	0.1	0.3	0.1
2.	0.4	0.2	0.6	0.2
3.	0.5	0.2	0.3	0.1
4.	0.6	0.2	0.4	0.2
avg	0.45	0.2	0.4	0.2

Shooting distance: 10m
Diagonal accuracy: 0.6 cm

More statistics

Theoretically, what is the smallest target that can be hit N times out of 10 shoots. N=
1×: 0.1×0.1 cm (=0×0 in)
5×: 0.3×0.2 cm (=0.1×0.1 in)
9×: 0.6×0.6 cm (=0.2×0.2 in)
Coke can hits: 20 /20
Matchbox hits: 20 /20
Sugar cube hits: 20/20

Standard deviation (best if 0):

Horizontal: 0.11 cm = 0.04 inch
Vertical: 0.12 cm = 0.05 inch
Diagonal: 0.17 cm = 0.07 inch
Hor./Vert. ratio: 1:0.89 = 112.5% info
Predicted shooting accuracy at 10m×2 = 20m distance: 1×0.9 cm = 0.4×0.3 in.

SærSkyttern rated this air gun with .