Comments on: Boyer Succeeds with Bartlein Gain Twist Barrel

By: Myles Harvey

Myles Harvey — Tue, 30 Apr 2019 21:27:26 +0000

Honestly for the Win 270 to shoot 175 gain that need a 1;8 twist it makes sense. Think the ballistic Coefficient and weight. Heavier bullets need more twist to stabilize. Not to mention a fast twist with a fast burn powder erodes the chamber and barrel throat quicker. Take a hot load and an heavy bullet and you get better flight stability and longer barrel life. It is mathematical theory and most likely practical as the Germans have done it for over a Century.

By: Jeff Sampsel

Jeff Sampsel — Tue, 26 Aug 2008 20:54:53 +0000

Just a little history on the gain twist concept.The 6.5x52mm Mannlicher-Carcano used a twist rate of 1×19.25 near the chamber to a fast rate of 1×8.25 at the muzzle end.The M38 was first adopted in 1891.Those guys were thinking then and we are still thinking.I like the concept and by the smile on Tony Boyers face he is pleased with it.So from one old lineman to another give HELL Tony ,good luck with the new barrel. Later, Jeff