Since my .22 cal Streamline was doing so well at 50 yards, and we had a very still day here in Michigan, I thought it would be a good time to see how the Streamline would hold up at 75 yards. Part of what I wanted to find out was which of the JSB pellets would be most accurate at longer ranges. I started out shooting 5 shot groups, but soon switched to 10 shot groups to better evaluate the accuracy potential of the 15.9 and 18.1 grain pellets. I used unsorted and lightly lubed pellets for this test. For the morning groups I shot all 10 of each type of pellet without moving the rifle. For the evening groups I shot around a four bull target twice, firing 5 pellets at a time at each bull. I did this to include the effect of moving the rifle on overall accuracy. Here are the results:
Morning groups (in)
JSB 15.9 1.14"
JSB 18.1 1.17"
Evening groups (in)
JSB 15.9 1.10" 1.29"
JSB 18.1 1.55" 1.36"
To be honest, I had hoped for better given that I can often get 1/2" or smaller groups at 50 yards. Maybe .25 caliber would give better results at these longer distances. At any rate, the 15.9 grain pellets still edged out the 18.1 grainers even though the heavier pellets might have been expected to perform better due to the higher BC.
Chuck
Morning groups (in)
JSB 15.9 1.14"
JSB 18.1 1.17"
Evening groups (in)
JSB 15.9 1.10" 1.29"
JSB 18.1 1.55" 1.36"
To be honest, I had hoped for better given that I can often get 1/2" or smaller groups at 50 yards. Maybe .25 caliber would give better results at these longer distances. At any rate, the 15.9 grain pellets still edged out the 18.1 grainers even though the heavier pellets might have been expected to perform better due to the higher BC.
Chuck
