If you want to increase the pull weight on your Remington 710, start by adjusting the screws on the trigger. Usually, there is one or two screws located at the bottom of the trigger which you can use to make it heavier. If that does not work for you, another thing to try would be adjusting a screw at the back of the trigger. This will change the sear engagement, which will in turn increase the pull weight.
If those adjustments don’t get rid of all the creep, or if you want to make more drastic changes, you’ll need to take apart the rifle and modify some parts. One common modification is to remove some material from the connector bar, which will reduce how much force is required to trip the trigger. You can also try changing the springs in the trigger assembly, which will change how much tension is required to pull the trigger. As always, be very careful when making any modifications and make sure you follow all safety instructions.