Marlin Junky
01-15-2009, 11:25 PM
How well do 7mm gaschecks work on .270 boolits?
There's a sticky that provides gascheck dimensions but it looks like there's an error or two on it. According to the chart, the cup thickness is the same for the 7mm and .270 Hornady checks and the inside diameter of the .270 check is .002" greater than the 7mm check (I can buy that); however, the outside diameter of the .270 check is .024" smaller than the 7mm check. This doesn't add up.
BTW, the .375 check outside diameter can't be .367" but that's not the subject here.
MJ
There's a sticky that provides gascheck dimensions but it looks like there's an error or two on it. According to the chart, the cup thickness is the same for the 7mm and .270 Hornady checks and the inside diameter of the .270 check is .002" greater than the 7mm check (I can buy that); however, the outside diameter of the .270 check is .024" smaller than the 7mm check. This doesn't add up.
BTW, the .375 check outside diameter can't be .367" but that's not the subject here.
MJ