Geco - 8mmx57 JRS SP 185gr Rifle Ammunition

8mmx57 JRS SP 185gr Rifle Ammunition

The 8 x 57 IRS is a first-class cartridge for drillings.

Since there already was an 8 x 57 IR, the next logical step was to also create a cartridge with rim for break-open rifles in addition to the 8 x 57 IS with the stronger 8 mm bullets. Well, the 8 x 57 IRS is the rimmed version of the rimless 8 x 57 IS – both were introduced in 1905.

Barrel Length mm 600
BC-Value 0.245

Ballistic Data
0m - 775m/s - 3604J
50m - 717m/s - 3085J
100m - 661m/s - 2622J
150m - 608m/s - 2218J
200m - 557m/s - 1861J
250m - 509m/s - 1554J
300m - 446m/s - 1303J