Re: Vietnam Sniper Rifles
Until about 1961 Winchester hook cut rifles barrels from forgings they made in house. The blanks after hot forging were normalized and bored standing vertically in the gundrills, such that gravity would not cause the barrel to "sag" while it is unsupported as the drill made it way through. They were then reamed to sized and the the grooves were cut one at a time, 7 passes for each one, then the cutter was indexed to the next groove. After rifling, they were lapped with a lead lap, drawn back and forth in the bore by hand to polish out tool marks. Very labor intensive, and time consuming, about 40 min. per barrel. Now days they cold hammer forge new ones in a matter of a few minutes, with no hand work.
These cut rifles barrels were very good in their day, and still are. I have a M70 target with US property marks, unmodified and it will easily hold less than 0.75 moa with match ammo, not bad for a .30 bore. It is an example of a national guard team rifle, just as those early sniper rifles used in SE Asia that were pulled into service. These barrels also ruled the day in long range NRA shooting at 1,000 yards for several decades.
No custom barrel, just good old Winchester craftmanship, and is largely why those old pre 64 M70's have such a good rep, and are worth more each year....
Last edited by 300 H&H; 11-16-2010 at 06:25 AM..