Ok, 2 ways to go then. Personally I like the heaviest bullet I can find as slow as it can go. I used 250gr bullets, very soft recoil, very manageable.
Lower weight bullets(185gr), create a different feel of recoil, much quicker cycle time (which some like) but the recoil is more of a snap then a push.
I can follow the sights better with the slower bullet. Try both and measure your times.