A short time ago, I came across a great deal on a used 77/17 in 17Mach2. It was in like new condition, but I was a little disappointed with the accuracy.Five shot 50 yard groups were averaging around 5/8", which to me wasn't satisfactory. I tried free floating the barrel, which opened the groups up to around 3/4".
I then discovered that Green Mountain made 77/17 barrels in 17Mach2, so I ordered a sporter weight, stainless fluted barrel in 17mach2. When I went to remove the factory barrel, it was quite sloppy in the receiver after the clamp bolts were released. The Green mountain barrel was more snug, and had to be tapped into place with a hammer on a wooden block. The Green Mountain barrel is slightly heavier in contour, but because of the fluting, the weight is similar. It took me about a half hour to change out barrels, and about the same to free float the new barrel.I sighted in the rifle with the new barrel this morning, and was quite pleased with five shot groups averaging almost exactly 3/8" at fifty yards. the The gun is a keeper, now I just need to do something about the way too heavy trigger pull.
The rifle.
Some 50 yard five shot groups.
I then discovered that Green Mountain made 77/17 barrels in 17Mach2, so I ordered a sporter weight, stainless fluted barrel in 17mach2. When I went to remove the factory barrel, it was quite sloppy in the receiver after the clamp bolts were released. The Green mountain barrel was more snug, and had to be tapped into place with a hammer on a wooden block. The Green Mountain barrel is slightly heavier in contour, but because of the fluting, the weight is similar. It took me about a half hour to change out barrels, and about the same to free float the new barrel.I sighted in the rifle with the new barrel this morning, and was quite pleased with five shot groups averaging almost exactly 3/8" at fifty yards. the The gun is a keeper, now I just need to do something about the way too heavy trigger pull.
The rifle.
Some 50 yard five shot groups.
