I am the OP. I ordered the Volquartsen accurizing kit and it will be here Monday. Now to measure the before and after pull weight, but I am not interested in the actual weight, only the difference in the weights.
I bent a wire to fit across the trigger and hang down past the grip while holding the gun with the barrel pointing straight up. The other end of the wire holds a ziplock bag. Since I am a bullet caster I have plenty of bullets and one pound ingots on hand. I put two ingots and a handful of bullets in the bag, and slowly raised the gun. The trigger didn't trip. I threw in another handful of bullets and slowly raised the gun. It still didn't trip. I tried another handful and this time the trigger tripped. Now to take bullets out of the bag.
Try five at a time, then two, then one. Now I know what it takes to trip the trigger. When I get the kit installed, I will take bullets out of the baggie until it doesn't trip, count the bullets I took out and multiply that by the bullet weight. The answer is the reduction in trigger pull weight.