Hello Leanwolf,
I have a SBH chop barrel which is magna-ported. The only thing I see is some lead "spray" on the barrel at the ports which is no big deal, comes right off with cleaning. Technically, you could have some gas cutting at the base of a plain base cast bullet as it passes by the barrel ports. This can technically affect accuracy. With checked bullets the argument is moot do to the hardness of the check.
Try both plain base and checked and see how they work for you.
I shoot mostly checked bullets in my pistol with cast.
There is no danger in using either from a safety standpoint provided the normal precautions are taken to be clear of the ports which is true for any projectile.
Regards,

I have a SBH chop barrel which is magna-ported. The only thing I see is some lead "spray" on the barrel at the ports which is no big deal, comes right off with cleaning. Technically, you could have some gas cutting at the base of a plain base cast bullet as it passes by the barrel ports. This can technically affect accuracy. With checked bullets the argument is moot do to the hardness of the check.
Try both plain base and checked and see how they work for you.
I shoot mostly checked bullets in my pistol with cast.
There is no danger in using either from a safety standpoint provided the normal precautions are taken to be clear of the ports which is true for any projectile.
Regards,