Posted: 4/7/2015 3:47:32 PM EDT
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The thread about firearm concepts that went nowhere, like trounds/Darick, Gyrojet, etc got me thinking:
Is there any actual/practical benefit to a rifle caliber weapon with taper bore? Hermann Gerlich supposedly invented the concept in 1920 to increase muzzle velocity & penetration for hunting. The concept was then used on German anti-tank guns in WWII. Anyone with a better understanding of the concepts/physics able to weigh in? Project AGILE supposedly used some .50 to .30 rifles, but I can't find anything other than a vague Wikipedia reference. |
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Quoted:
hard to do it with button rifling.. which most are made that way, due to cost. Barrels would need to be hammer forged to get the taper. and I would think that one uneven spot in a taper bore would cause accuracy problems as a small gas pocket could form....but I am only extrapolating and guessing here |
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My LWRCI's are my most accurate ARs and they are taper bored. Checking velocities between them and similar length standard barrels it seems that mine are running about 10- 20fps faster depending on ammo. Far too many variables to assign a 10-20 fps spread to anything really not on the same rifle. |
| Just giving my results. Didn't say it was definitively due to the swagged bore. Just see a consistent increase between rifles with similar length barrels. Might have to do with the bore coatings being different, the hexagonal rifling vs button rifling, any number of things. Just posting my oberservations |
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thats some groovy shit.. Quoted:
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What really baked my noodle was gain-twist rifling. Amazing that it's been around for a very long time, as well. thats some groovy shit.. Always gotta put your own personal spin on things, .... but you're really kind of a bore. Flame me if you want, I'll land on my feet and really go for your throat. |