I ran out of my normal 40 grain subs the other day so I thought Id give the new 42 grain Win subs a go in my CZ455 .22LR.
Having no details for them as they are relatively new I took them up to my range and gave them a go, checking the accuracy and working out ballistic performance.
This was straight out of the box with no bullet/weight/case sorting etc, that I sometimes do.
Measured atmospheric condition at my location = 16.9 degrees, Pressure = 28.77 inHg
Average MV = 1067 over a 15 shot string.
Max velocity = 1094ftps
lowest velocity = 1051ftps
I also measured the velocities at 120 yards as well and also measuring the exact drop at this distance to calculate the exact bullet Ballistic coefficient.
This resulted in G1 standard BC= 0.152
With 10.25 MOA elevation recorded at 120 yards = 13 inch drop.
Accuracy at 50 yards (zero ranged) was sub half inch with the odd flyer which could be eliminate by bullet and rim thickness sorting. At 120 yards accuracy was just over an inch again with the odd flyer.
Seem to be very good in my rifle and looking forward to getting out on the rabbits with them .
Steve