AbitNutz
01-29-2016, 05:26 PM
About two months ago I ordered a barrel from McGowen. It's a 30", stainless in 220 Swift with a 5-groove, 7.7" twist rifling. I was told it be every minute of 4 months. Well, I got a shipping notice that it's on its way. Classic example of under promise, over deliver.
I'm really curious to see how the 7.7 twist, 5-groove barrel works. It's the only caliber (.224) that McGowen offers in an odd number of rifling grooves (5) or fractional rifling rate (7.7).
I'm really curious to see how the 7.7 twist, 5-groove barrel works. It's the only caliber (.224) that McGowen offers in an odd number of rifling grooves (5) or fractional rifling rate (7.7).