02-06-2020, 05:52 PM
Kind of an old thread but thought I'd share my thought process when making a decision to buy my JP barrel. My use is pretty much the same as the OP's.
Unless I have some messed up inputs in the ballistic calculator, should be close.
Used 123gr SST, G1 BC .510 with a hopeful 2450 fps intial velocity. Input a 90deg 5mph wind velocity at avg atmospheric conditions here at 4600 ft altitude. Shooting angle 0.
-403.05 " bullet drop at 1000 yds.
38.49 moa or 11.2 mils come up.
40" Wind drift or 3.84moa/1.12 mils
TOF 1.68 seconds.
1324 fps at 1000 yds.
Looks very doable from 18" barrel based on VASCAR2s post. So I bought the 18" barrel. Plenty of elevation, 17mils, on my optic. Someone could sanity check these estimates. No range time on my barrel yet to compare to actual DOPE.
This bullet starts exceeding velocity of my 18" WOA .223 Wylde barrel shooting 77gr OTM pills beginning at approximately 975 yards. That rifle is very consistent at 1000 yds under the same conditions. Requires 9 mils elevation dialed.
Unless I have some messed up inputs in the ballistic calculator, should be close.
Used 123gr SST, G1 BC .510 with a hopeful 2450 fps intial velocity. Input a 90deg 5mph wind velocity at avg atmospheric conditions here at 4600 ft altitude. Shooting angle 0.
-403.05 " bullet drop at 1000 yds.
38.49 moa or 11.2 mils come up.
40" Wind drift or 3.84moa/1.12 mils
TOF 1.68 seconds.
1324 fps at 1000 yds.
Looks very doable from 18" barrel based on VASCAR2s post. So I bought the 18" barrel. Plenty of elevation, 17mils, on my optic. Someone could sanity check these estimates. No range time on my barrel yet to compare to actual DOPE.
This bullet starts exceeding velocity of my 18" WOA .223 Wylde barrel shooting 77gr OTM pills beginning at approximately 975 yards. That rifle is very consistent at 1000 yds under the same conditions. Requires 9 mils elevation dialed.