JSB Match Heavy .25 Pellets MKI vs MKII

[exsquid]

Looking for some thoughts/experience shooting JSB Match Heavy .25 Pellets MKI vs MKII.

I have a MKIII .25 Wildcat Compact and have been shooting the JSB 25.4 grn pellets which shoot wonderfully but am curious how well the heavier pellets would do in the shorter Compact barrel? Also, if there is any consistency to one shooting better than the other (MKI vs MKII) or am I going to need to try em' both and determine that myself?

Comments would be appreciated. Thanks Much!!

 

[sonny]

I have shot all 3 .25 JSBs from my Impact 600mm barrel. The heavy's buck the wind better IMO. As for MKl and MKll I'd say they are equal on any given day. The heavy's seem to shoot best for me at or around 900fps. GL with your wildcat, I have the wildcat MKll in .22 and love it.

 

[stoti]

I've shot them all too and almost never shoot the 25.4gr. anymore. The heavier pellets are just better in most instances. I shoot the MKI's out of my RAW and the MKII's out of my Impact. You said it, you need to just try them both and see what your gun likes.The testing is the fun part!

Stoti

 

[exsquid]

thanks...they're on the list to purchase. 

 

[Eaglehorn]

Agree with Stoti, see what your gun likes, but if it likes both definitely go with the king heavy. That has an extremely good BC for a pellet.

 

[VneMC2]

I run the .25 cal JSB MkII 33.95 pellets EXCLUSIVELY in my FX IMPACT MkII. The rifle was prepped by Ernest Rowe. I have just received the new Superior Smooth Twist X barrel liner. There REALLY is a major improvement in the performance of the rifle with this liner, over the original Smooth Twist X liner. I launch these pellet at 965fps with an Sd of 4.3 and it will do sub moa groups, even in fairly strong winds at 100 yds. This liner has not yet showed the same performance with the HYBRID slugs. Same settings launches them a 1025 fps. everyone is saying slow them down. Then I loose energy on target. 

 

[VneMC2]

Oh and my Superior Smooth Twist barrel liner, in the IMPACT ,is 700mm. I am running 137 BAR ON THE REG with the power wheel set at 4.

 

[BlackICE]

Is superior's twist rate much less than the older x-liner?

 

[triggertreat]

I have been testing the MKIIs in my Impact II 600mm STK. It seems to like them best at 900 FPS.