Twist rate for conicals?
- Thread starter Vermonter
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arcticap
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Probably a 1 in 32" twist or faster is preferred.
A 1 in 28" twist or faster even more so, and a 1 in 38" twist somewhat less.
It depends on other factors too, like the design and size of the conicals and the quality and type of rifling.
A 1 in 28" twist or faster even more so, and a 1 in 38" twist somewhat less.
It depends on other factors too, like the design and size of the conicals and the quality and type of rifling.
arcticap
Member
A 1 in 48" may work too but is not usually preferred for dedicated shooting of a wide variety of conicals of differing lengths and weights.
The twist rate can also depend on the caliber.
The twist rate can also depend on the caliber.
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Jefferson Herb
Member
I use a TC Hawkin,but have a 1-28 Green Mountain barrel,shoots well with Maxi's.If you get a slower twist ie yard sale etc,try a lee hb minnie,which are designed for slower twists. Good Luck Free Advice is just that but.... find a slug that works and then get mold,cheaper
Loyalist Dave
Member
The original Enfields had a "slow" twist, 1:56 (iirc), yet were reknown for good accuracy with minnie type conicals. I:48 will work, and so will faster. Pedersoli sells a Jaeger with a 1:24
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72coupe
Member
Just use the Greenwood formula for you particular projectile and caliber.
arcticap
Member
It's the Greenhill formula.
Wikipedia explains it in an article about Rifling in the section about Twist rate and bullet stability:
http://en.wikipedia.org/wiki/Rifling
Also:
http://en.wikipedia.org/wiki/Alfred_George_Greenhill
Wikipedia explains it in an article about Rifling in the section about Twist rate and bullet stability:
http://en.wikipedia.org/wiki/Rifling
Also:
http://en.wikipedia.org/wiki/Alfred_George_Greenhill
Last edited:
72coupe
Member
Sorry. Of course it is the Greenhill formula.
BADUNAME47
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P-58 Naval Rifle in .577
The most "accurate shooting" of all the Enfields was the P-58 Enfield Naval Rifle.(And the P-60 "Army" Version of the same) Both rifles had .577 caliber barrels with 5 lands and grooves along with "Progressive Depth" rifling which worked wonderfully with Minie Balls (Conicals.)
If possible, pick up a replica Parker-Hale Naval Rifle because they are the best of the lot. They are occasionally available on Gunbroker, etc because Paraker-Hale is not out of business. Pedersoli is now advertising Naval Rifles on their website although I doubt that any have been imported into the U.S. yet.
Both my son and I have shot deer with .577 caliber Minie Balls-they go down as if they were hit by a freight train!
Hey-what would you expect from a bullet that is .577 Caliber BEFORE IT STARTS TO EXPAND!
The most "accurate shooting" of all the Enfields was the P-58 Enfield Naval Rifle.(And the P-60 "Army" Version of the same) Both rifles had .577 caliber barrels with 5 lands and grooves along with "Progressive Depth" rifling which worked wonderfully with Minie Balls (Conicals.)
If possible, pick up a replica Parker-Hale Naval Rifle because they are the best of the lot. They are occasionally available on Gunbroker, etc because Paraker-Hale is not out of business. Pedersoli is now advertising Naval Rifles on their website although I doubt that any have been imported into the U.S. yet.
Both my son and I have shot deer with .577 caliber Minie Balls-they go down as if they were hit by a freight train!
Hey-what would you expect from a bullet that is .577 Caliber BEFORE IT STARTS TO EXPAND!
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