Ajwilly96
Gold $$ Contributor
I was shooting a steel competition yesterday, had the best day I’ve ever had at the range but I had something interesting happen.
So about a month ago I had some hard carbon in my barrel that I was not able to remove so I was just shooting with it, my velocity was around 2690.
Recently I have been able to get that carbon out of my barrel and on two separate trips to the range I fire five fire forming/fouling shots and then I shoot five shots to confirm my zero and muzzle velocity. So with 10 rounds down the barrel both times my muzzle velocity has been around 2650.
Yesterday I was able to hit 4” x 6” plates at 900 and 1000. So I decided to correct my elevation adjustment in my Kestrel because it was off at those distances and when I corrected my muzzle velocity at 900 it gave me a corrected velocity of 2695 which puts me back at the speed when my barrel had carbon in it.
It was pouring down rain yesterday so I did not get to break out my chronograph at the end just to see where my barrel was but I will definitely do that next time I am out.
From what I understand it is not uncommon for a fouled barrel versus a clean barrel to speed up 50 ft./s but I was wondering around how many rounds does it take to gain that speed back?
I figured 10 rounds before the match starts would be plenty But I guess not. I am considering bumping my fire forming rounds to 10 and 5 for zero for 15 rounds before the match.
So about a month ago I had some hard carbon in my barrel that I was not able to remove so I was just shooting with it, my velocity was around 2690.
Recently I have been able to get that carbon out of my barrel and on two separate trips to the range I fire five fire forming/fouling shots and then I shoot five shots to confirm my zero and muzzle velocity. So with 10 rounds down the barrel both times my muzzle velocity has been around 2650.
Yesterday I was able to hit 4” x 6” plates at 900 and 1000. So I decided to correct my elevation adjustment in my Kestrel because it was off at those distances and when I corrected my muzzle velocity at 900 it gave me a corrected velocity of 2695 which puts me back at the speed when my barrel had carbon in it.
It was pouring down rain yesterday so I did not get to break out my chronograph at the end just to see where my barrel was but I will definitely do that next time I am out.
From what I understand it is not uncommon for a fouled barrel versus a clean barrel to speed up 50 ft./s but I was wondering around how many rounds does it take to gain that speed back?
I figured 10 rounds before the match starts would be plenty But I guess not. I am considering bumping my fire forming rounds to 10 and 5 for zero for 15 rounds before the match.