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Invisible rifling?
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OK, I have heard about "invisible rifling".Can someone please explain it to me, is it truly invisible or is it just hard to see, how is it done and lastly does it WORK???? Thanks,, Ed
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DarylS
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(.700 member)
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04/01/19 11:33 AM
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Re: Invisible rifling?
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Hey Ed. As I understand "invisible" rifling, it is very shallow, every wide rounded grooves (have heard only 2) and lands with a quite slow twist, making it difficult to easily discern. Looking the length of the tubes, should show an impression of the interior twisting.
I tried to have Hugh Toenjes make me just such a barrel for shooting round balls, reasonably snug patched however at that time and now as well, he believes nothing more shallow than about .028" depth will work in ANY rifling with patched round balls.
Lanvaster's invisible rifling was meant for the short paradox'type bullets.
As far as I know, it worked well enough for close-range dangerous game killing/stopping.
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85lc
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(.375 member)
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05/01/19 11:37 AM
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Re: Invisible rifling?
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I guess you could call Lancaster's oval bore invisible rifling. It certainly is hard to see but does work well.
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DarylS
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(.700 member)
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05/01/19 03:18 PM
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Re: Invisible rifling?
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Tks RB. I have heard of Lancaster's oval boring being called "invisible" rifling which is why I had noted it
I was not aware, however how it shot well or not.
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Heelerau
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(.300 member)
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06/01/19 11:06 AM
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Re: Invisible rifling?
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Lancaster oval bored artillery carbines, mates of mine who have used them find they give the odd inexplicable flyer, but that is using minnie bullets. I hope to try one one day with my Enfiled paper cartridges, these are made up with the pritchett bullet and are effectively paper patched. I can shoot these all day without fouling my Enfield rifled muskets, unlike using minnies where I have to wipe out the bore every 13 or 14 shots. I have seen a Lancaster small bore repeating rifle, English made in 6.5mm, for cordite and that was also oval bored, as agains some Canadian Lee Enfields that were just two grooved.
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DarylS
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(.700 member)
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06/01/19 12:38 PM
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Re: Invisible rifling?
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I have a #4 Enfield with an almost new 2-groove barrel. I rechambered it to .312 Express, a wildcat that Ken Waters wrote up in "Pet Loads" in the 80's. I did not know about Ken's wildcat until a year or more after I'd done the same thing.
Mine does 2,964fps with a 174gr. Hornady.
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85lc
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(.375 member)
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09/01/19 08:09 AM
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Re: Invisible rifling?
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There were a nice set of articles in DGJ about Lancasters.
My Lancaster 360 BPE DR shoots very tight groups with one load.
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Re: Invisible rifling?
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Guys, Thanks for all the info. the reason I asked about invisible rifling is that there was a German made SXS hammer gun on an auction in 12 gauge. It had a single folding leaf express sight mounted on the barrel and a pop up peep sight made into the tang. I thought it surely would have some kind of rifling but the seller stated it was truly a smoothbore. Upon a closer personal inspection he was right, no rifling at all. Yes, I did purchase it and I will get some pics this week. Thanks,,,,Ed
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DarylS
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(.700 member)
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10/01/19 05:50 AM
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Re: Invisible rifling?
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Sounds great, Ed. Round balls need very little help to fly straight. Forsyth proved that with the 144" rifling if all you wanted to do was to shoot to 150yards.
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