AmericanLongRifles Forums
General discussion => Contemporary Longrifle Collecting => Topic started by: Ken Prather on October 09, 2019, 05:40:33 PM
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my newest gun acquisition.
https://link.shutterfly.com/XSPte5HIz0
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Ken--- That is a great looking fowler. The French civilian arms and some of the early Fusil de Chasse pieces are some of the most attractive long guns.
Very nice wood.
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A rifled fowler?
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That's a very elegant gun and finished to perfection.
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The John Getz barrel has straight rifling.
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Can anyone explain the purpose of straight rifling?
What is it supposed to accomplish, and how effective is it in a muzzleloading smoothbore?
Thanks,
R.J.Bruce
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I have read that historically speaking the straight rifling may have been to give fouling a place to go? Straight rifling is sometimes found on modern shotguns and the idea is that they will help stabilize the projectile(s) and improve accuracy. Depending on who you talk to, some say it works some say it makes very little difference. Straight rifling is found in some original guns. John Getz did a beautiful job on this barrel. Looking forward to trying it out.
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Ive got an original jaeger boar gun with a straight rifled octagonal barrel.
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I owned an original Durs Egg fowling gun in 14 bore with straight rifling. Theory has it it helped hold the shot pattern together. This was a very light barrel and I'm sure was never intended for ball, full blown fowling gun. Sort of "micro grooved", something like 16 or 17 grooves. Spanish barrel by the way.
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To Mikes point, when the Ordnance Dept. made the decision to rifle percussion altered Model 1816 muskets and use a .69 cal Mini Ball bullet, they quickly discovered that the pressures were too great for the relatively thin walled barrels. What they did discover was that the rifling marginally improved accuracy when buck & ball loads were fired.
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Paraphrase what Chuck Edward's to me once....straight rifling is better than no rifling and you can still use shot.
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The English were using straight rifling as purely a shot pattern improver. You'll also find a lot of 1740-70 German 1/2 stock fowling guns straight rifled too. The ones I have seen had "standard" cut round bottom rifling. I have one now that the rifling is quite deep but only goes 6" to 8" down the barrel. Others are rifled for the full length.
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As Mike says in both posts above.
Straight -grooved barrels for shot were popular for a while in the 18th century. They were made for a specific size of shot that corresponded to the grooves. They did throw very nice patterns with the correct size shot.
Germanic boar guns were often straight rifled as well. Not sure on the theory why , but can surmise.
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That's a very attractive gun. What kind of wood is it?
As for the straight rifling, I have no experience or wisdom of my own, but I came across this little blurb last night when I was looking for something else: http://www.flintriflesmith.com/WritingandResearch/WebArticles/straightrifling.htm (http://www.flintriflesmith.com/WritingandResearch/WebArticles/straightrifling.htm)
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The stock wood is cherry. The lock is a Jim Chambers early Ketland. The barrel like I mentioned was made by John Getz.
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As Mike says in both posts above.
Straight -grooved barrels for shot were popular for a while in the 18th century. They were made for a specific size of shot that corresponded to the grooves. They did throw very nice patterns with the correct size shot.
Germanic boar guns were often straight rifled as well. Not sure on the theory why , but can surmise.
Germanic boar guns....I have suspected these deeply straight rifled 1/2 stock guns that look like fowling guns were actually boar guns. Why they look like fowling guns I don't know. Any theories Pukka?
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Thanks for all the answers regarding straight rifling. I learned a lot that I did not know.
Mr. Prather, how deep is the rifling in the Getz barrel? Is it round bottom rifling?
Mike Brooks and Pukka Bundook, what was the relationship of shot size to groove size in the original straight rifled barrels?
Thanks for your answers.
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Thanks for all the answers regarding straight rifling. I learned a lot that I did not know.
Mr. Prather, how deep is the rifling in the Getz barrel? Is it round bottom rifling?
Mike Brooks and Pukka Bundook, what was the relationship of shot size to groove size in the original straight rifles barrels?
Thanks for your answers.
Beats me, never shot a straight rifled gun. I have read...somewhere in an old document it seems....that the optimum shot size should fit nicely in the groove. As I said, I never tried it. would like to try some day though.
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You.d have to ask John Getz on the rifling specs. I am not sure. by feel. I'd guess they are not round bottom.
K
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They look round bottomed to me.
(https://i.ibb.co/fM9jwnr/round-bottomed-rifling.jpg) (https://ibb.co/0qKHbFY)
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Yup, I'd guess 4's or 2's would work best in those grooves.
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Ken - if it is a 20 bore, then 4's or possibly 6's, might work best for you.
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Ken - if it is a 20 bore, then 4's or possibly 6's, might work best for you.
In a 20 bore (or any size bore) I personally use 4's for hunting everything. When I'm busting skeets I use 9's That gun, if I read my old theory right is going to need big shot to efficiently take advantage of that straight rifling. It looks to me that with the size of those grooves a patched ball was the intended projectile.
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My usual shot load for my old 20 g fowler is a duplex load of #4 and $6. I use that for both birds and tree rats. I have not shot much yet with this new gun. Been busy building a shed and other to-do's lately. Looking forward to it.
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I have read that historically speaking the straight rifling may have been to give fouling a place to go? Straight rifling is sometimes found on modern shotguns and the idea is that they will help stabilize the projectile(s) and improve accuracy. Depending on who you talk to, some say it works some say it makes very little difference. Straight rifling is found in some original guns. John Getz did a beautiful job on this barrel. Looking forward to trying it out.
I have also read that the straight grooves were fouling traps.Maybe so.I think the
word "rifling" goes back to the old German "Riffeln" or to groove something..maybe.
Whoever made the grooves into a spiral probably fired the first accurate shot ever fired.
Bob Roller
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FYI, John Getz informed me that this barrel has "tapered rifling." The depth starting at the breech is .017" I wonder if tapering the rifling depth might act similar to a choke?
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FYI, John Getz informed me that this barrel has "tapered rifling." The depth starting at the breech is .017" I wonder if tapering the rifling depth might act similar to a choke?
Way above my pay grade to know that sort of stuff.
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Just checked and there is only .003 difference in the taper so probably not any significant choke effect.