I've had great luck with both, besides from saving a little bit on powder over time, but 200's are usually from my bullet guy (Bear Creek) are just a touch more expensive. Difference in negligent in my opinion. I've had great luck with Bear Creek 180's on 4.2 TG at 1.118 i tried longer like 1.124 last weekend had one little hickup so went just a touch shorter and they seem to function flawlessly out if the 300 I've shot.