Use them for my 200 and 300 yard events, use the 80 gr for my 600 yard event. There are some that use the 77gr for 600 as well. Had a Navy female officer clean my clock at 600 using 77gr.
She was on the Navy rifle team though so did not feel too bad. Also had a 20 point brain fart that really lowered my score.
The 77gr will fit in the mag while the 80 gr will not. There are others and an AMU armeror out shot the rest fo the team at 1000 using the 90 gr.
Room for thought. Add the newer bi and multi metal desintigrating rounds and you have a lethal mix.
__________________
Hold Hard guys
Rick B.
Knowledge is knowing a tomato is a fruit.
Wisdom is knowing it is great on a hamburger but not so great sticking one up your ass.
Author - Richard.
Experience is what you get right after you need it.
Author unknown.