Hammerli 215 trigger vs magazine

Without a magazine, this Hammerli 215 trigger trips at 2 lbs, 10 ozs.
With a stock magazine in place, it trips at 3 lbs.
With a European plastic magazine, it trips at 3 lbs, 10 ozs.
Looking for ideas as to what to do so all magazines trip at the desired 2 lbs, 10 ozs.
Thanks!

Oops

The sear springs on my 208s pistols adjoins the magazine well.  Make sure it is in the pistol correctly.  A new sear spring, nice and flat, may be in order.

Sear spring looks flat and fine.
Are you saying the magazine pressing on the sear spring, is affecting my trigger pull force?
If so, maybe taking a few thou off that face of the mags?

A note to Hammerli 215 owners who check trigger force-
I checked 8 different (metal and plastic) magazines while measuring trigger pull force and found from 2 lbs 8 oz to 3 lbs 10 oz range. Big difference!
Next time you check your trigger pull, try with different mags in place.