I shot out a lot of 22/250's on P dogs, chucks, and jack rabbits, 220 Swifts also.
Accurate Arms 2700 has one of the coolest burning heat indexes of powder made on the market. We use this powder in 22/250,AI, 243, and AI. Throats last MUCH longer than IMR 4064, VARGET, H4895 which are very, very hot burning powders.
Winchester 760 is another powder that is cooler burning but not quite as cool burning as the AA2700.
38-39g of AA2700 or Win 760 in the 22/250 is money in the bank when it comes to accuracy and speed.
In these troubled times, you have to use what powder you can find.
