FX Wildcat .25 and Predator Polymags??

Will clipping or sanding the ends enough to make them fit lose any accuracy does anyone think? Only making 40 yard shots.

i heard some people load them single into the barrel and push the level forward. Any issues that could arise from this?

sorry, just new to air rifles and shooting in general

I don't think you'll see accuracy issues at that range. The only issue with the pointed tipped pellets could be poking of the breech o-ring..........though I haven't heard of that problem with the polymags, I do remember mention of it with the metalmag pellets but I don't remember what gun it was.