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Why so many lube gruves?

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14 November 2013, 04:59
bubba
Why so many lube gruves?
I was looking at molds for a 38/55, some only have 1 lube gruve some have 4 or 5, not looking at tumble lube design, is this a throw back from black powder era when you needed lots of lube to keep fouling soft, wanting to use it in a 38/55 model 94 anyone have experience in this area, input appreciated.
14 November 2013, 05:09
Idaho Sharpshooter
In a word, yes! With smokeless, a single groove is generally all one needs. Designs date back to the days when rifles had 30" barrels.
14 November 2013, 05:23
bubba
Ok now i understand better, that opens up a larger area of molds i can choose from, thanks.
14 November 2013, 07:07
mete
The bullet that has the larger number of grooves has more of the length as a bearing surface and that will make them more accurate.
14 November 2013, 10:28
Idaho Sharpshooter
a bullet with more lube grooves has L-E-S-S bearing surface than a slab sided one. Same principle as the multiple bearing bands on modern conventional solids and mono-metal.

I own Elmer Keith's Shiloh Sharps 45-90, and the accuracy is with a 5-groove bullet. That's only shot out to half a mile, so true long range testing remains to be done before Quigley in June of 2114.
14 November 2013, 17:15
arkypete
I believe that most, if not all, of the multi lube groove bullets came about pre Alox. Once Alox was discovered bore riding designs began to appear, less of the bullet was in the case nor was filled lube grooves left exposed to collecting dirt and lint. Alox proved to be more accurate then the older formulations of lube and allowed for higher velocity.
Lyman has a nice multigroove bullet design that works across different calibers and seems to bridge the gap between the old and new, 375449.

Jim


"Whensoever the General Government assumes undelegated powers, its acts are unauthoritative, void, and of no force." --Thomas Jefferson

15 November 2013, 19:16
bubba
arkypete

I cant seem to finf that Lyman bullet your talking about, has it been dropped from there line, thanks bubba.
16 November 2013, 02:01
arkypete
Bubba;
I'm sorry it's 375449.
Lyman uses this design in several calibers.
I use this bullet in my 375 Whelen. I've got three different 2 cavity molds for this bullet. One is straight factory and does well, I lapped out one cavity on the second mold to engage the rifling with the short nose and number three I got a friend to remove the gas check portion of the mold just to see if it could be down. Not entirely successful.

Jim


"Whensoever the General Government assumes undelegated powers, its acts are unauthoritative, void, and of no force." --Thomas Jefferson

19 November 2013, 21:22
Greg K
quote:
so true long range testing remains to be done before Quigley in June of 2114.


I don't think I'd be able to make that match, I'd be 162 by then! Big Grin
20 November 2013, 00:33
arkypete
quote:
Originally posted by Greg K:
quote:
so true long range testing remains to be done before Quigley in June of 2114.


I don't think I'd be able to make that match, I'd be 162 by then! Big Grin


With Obama Care it's pretty much a sure bet, that you'll make it.

Jim


"Whensoever the General Government assumes undelegated powers, its acts are unauthoritative, void, and of no force." --Thomas Jefferson

12 December 2013, 04:20
Idaho Sharpshooter
GregK,

about three months after I shoot I'll be sixty-five. I meet my older brother every year.

The next month after Quigley, July, I hope to be back in South Africa hunting Leopard (if the tag comes thru).