Vulcan 25 cal VS Wildcat 25 cal
Have already posted each guns result in the gun specific forums here I wanted to post a comparison.
Shot both at 50 and 100 yards. Same conditions. Light wind from left. Using jsb kings unsorted at almost identical velocities. Here are the results.
Vulcan 50 yards
Wildcat 50 yards
Vulcan 100 yards
Wildcat 100 yards
One thing that I noticed is that at 100 yards Wildcat hits exactly where the strelock shows but Vulcan hits almost half mil dot high. I am using the bc value of 0.036 for Wildcat but for Vulcan i had to use bc of 0.046 to get the correct holdover. What could be the reason for this. Does ballistic coefficient differ for each gun?
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Interesting comparisons
I will do the same…
About strelok the BC should be the same for the same pellets!. Maybe the program doesnt fit due to the scope?. Did you use the sane scope?.
I will post my results soon
Ok here’s what I think about the above groups. Wildcat shots are horizontal which means they are more effected by wind. Vulcan shots are vertical which means the barrel is more sensitive to difference in pellet weight but pellets don’t get much effected by wind.
So I can assume that if I sort the pellets by weight then Vulcan should shoot them more accurately. Also the smooth twist barrel is more forgiving when it comes to shooting the pellets unsorted but its twist and choke is making the pellets more sensitive to wind.
Seems every gun or you can say every barrel has its strengths and weaknesses.
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No it should not…
All barrels I tested were fitted to the same regulated PCP on the same day and cut to the same length (22″)
I shot over chrono’s at 50m and 100m to get very accurate figures of B.C and velocity retention.
I also shortened the barrels 1/2″ down to 18″ at a time and the figures remained very much the same.
I am not going to release all the velocity and BC variations here as last time I spoke about it I upset a few people but I will list them for you in order of performance best to worst.
BSA
CZ
Lother Walther (very close to CZ)
FX smooth twist
Something I learned very fast was the faster you push a pellet down a FX S/T the worse it got. I can only pin that on the pellet stripping of lead through the S/T section of rifling and it having an effect on twist rate and stability
I have settled on an 18″ hammer forged BSA barrel an have learned never attempt to shoot a smooth twist barrel over a chronograph at 100m again :confusedn: