Most people stick with 200 and 230 for IPSC/IDPA. Power factor favors heavier bullets because you can drop the velocity fairly low to reduce recoil. I used to shoot 230gr LRN but switched to 200gr SWCs because I could get more bullets out of a bucket of lead. It didn't save me much money but saved me the hassle of obtaining lead for longer. Using a medium to heavy bullet in front of a fast powder like Clays is very popular and will have noticeably less recoil than factory ammo.
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New gun, same ol' shot.
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