What happened to the theory that slugs need a higher spin rate?
The longer the projectile, the higher the required spin rate to stabilize. The STX slug liner is designed to be used with (speaking of the .25 since that is what I have and have researched) up to a 39 grain slug, which coincidentally is exactly what fits in a stock magazine. At least in a Side Shot mag, I haven't actually tried a FX mag but I assume it is comparable. Once you get into a heavier (read longer) slug they may perform better with a higher twist rate barrel. I will eventually be reporting on the performance of .25 slugs in a 1 in 14" twist rate which is what TJ's .25 barrel comes with. When I get my Impact back from the gunsmith I will start a new thread.
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