so i bought some oem sig p226 10 rd mags that the springs are so tight you can only get 9 rds in them without a huge struggle. so i bought some dummy rds and loaded them with a speed loader and forced the 10 rd in. left like that for months. no change still very difficult to get that 10 rd in. now ive read that some people suggested cutting the spring down a rung or 2 but i feel thats not a good idea. whats the forum consensus on this? if anyone have a solution other than throw them out or get news ones....im all ears

I wouldn't cut the spring.
Have you broken the mags down and cleaned them?
Every mag I get is stripped and cleaned with spray brake clean. The cheap stuff from walmart.
I then run the followers through the mag body to make sure they are free of binding.
I then spray everything with Magslick from Brownells which is a dry film lube.
I have found all kinds of plastics. Metal burrs along with greases and other heavy lubricants inside brand new mags.

While loading mags and letting them set has help on Glock oem mags in the past its actually believed that loading and unloading mags (use) is what weakens or softens mag tension.

Also mag loaders can help but just beware that on those hard to load last rds that the loaders can actually dent and deform the sides of the shell case.

Thats just the practice that I use and have developed over the years. Many are ok with an oil as lube/protectant or even dry. I just prefer magslick dry film lube/protectant as it is dry and doesn’t attract or hold debris like an oil can. Have had the thick greases/oils the factory uses cause loading issues which causes every rd in the mag to drag on the lube and cause hard or impossible loading of the last few rds.

yes i also thought cutting the spring was a bad idea. i have not taken the mags apart yet but im gonna follow your directions and give it a go.

thanks