Rifling lands

[Hein]

In terms of Hawken rifles what are the standard amount of rifling lands? The reason me asking is because this Hawken in 45 calibre I obtained (which by the way I still have not been able to get info on who made it) seems to have micro rifling (about 12 lands in the bore).

 

Hien, that's a LOT of land! I have 14 acres of wooded land myself. :haha: :haha: Ohhhh, gawd I really, really crack me up!

Oh, that was a serious question what?
O.K. I've owned several Thompson Center Hawken rifles over the years and I believe they all had 6 lands.
Many originals had 7 lands.
Maybe a traditionlist here has more information, but I've never seen one with 12 lands.

 

Its a Marlin microgroove, oops wrong forum sorry. /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/wink.gif

 

[musketman]

Its a Marlin microgroove, oops wrong forum sorry. /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/wink.gif

You are not that far off, in Ned Robert's book "The Muzzle-Loading Cap Lock Rifle" Mr. Robert's shows many old style riflings used long ago...

A-mix these are polygrooving and microgrooving, polygrooving has 12 to 14 lands, the star-grooving method shows a dozen lands as well...

 

[LRB]

The very first T-C Hawkens were 12 groove and did not shoot well. They shortly after went to how ever many they have now.

 

[gordy]

What is the twist,and how deep are the grooves? The only firm that seemed to have success with mirogroove rifleing is Marlin! It would seem that such small lands and grooves lacks a good grip on the fabric of the patch.If the twist were fast enough,it might work on minnies or other bore size conicals. /ubbthreads/images/graemlins/cool.gif

 

As Forsyth found, rapid twists demand deep grooves to prevent stripping, or "Tripping" over the rifle" as he called it. Micro grooving works only with very slow twists in large bores. It may work in smaller bores ike .45 or .50 as long as the rate of twist is very slow, like 1 in 70" or 1 in 80". The ball has to be almost land dia. and the patch takes up the windage to the shallow depth of the grooves. Micro grooving today is on the order of .002" deep. Normal high vel. button or cut rifling is .004" deep, with 1/2 the number or even less, of lands.
: Cut rifled M/L barrels usually run .008" to .015" depending on the calibre.
Daryl