1 year wait for those vapor trails. Don't spend them all at once!
Regarding 90 gr bullets, they were attractive to those with older 1:10 barrels. Not sure if they worked but I changed over to 1:8 twist barrels and don't shoot anything less than 100 gr bullets in my 243 and 6mm rifles.
If I had a 1:10 twist barrel it would be shooting 55 and 58 gr bullets at varmints. But I don't plan to go back.
