Author Topic: Any 32 caliber barrels w/steeper rifling than 1:48?  (Read 6358 times)

Offline Skychief

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Any 32 caliber barrels w/steeper rifling than 1:48?
« on: April 10, 2010, 05:25:50 AM »
I would like to know of any 32 caliber barrels being made with faster rifling than what seems the standard (1:48").


I have been thinking that a quicker twist could make lighter loads more accurate with reduced loads for squirrel hunting.   Then, maybe a pulled shot through the shoulders might make similar damage to a 22LR instead of ripping things to shreds.

Maybe rates of twist around 1:20 or 1:30 might group roundballs well with 10-15 grains 3f.   (Just throwing these numbers out there as an example of what I mean).

Do any of you know of a maker with such barrels ready to sell?  Any that would make such a barrel?

Thanks for any insights!   Skychief.


billd

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #1 on: April 10, 2010, 05:58:02 AM »
Colerain and Rice will alter the twist.  Rice's web site says $30. extra. Colerain's web site doesn't say much, have to call them.  I would think Rayle could make a faster twist.

Bill

Offline wvmtnman

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #2 on: April 10, 2010, 07:36:01 AM »
Rayl will make anything you want.  I have a fair amount of experience in hunting squirrel with a muzzleloader.  I would suggest find the rate of twist that is the most accurate for the caliber you settle on and go for head shots.  If you can't go for a head shot, a gut shot is second best.  -A little messy but does not waste meat.
                                                                    Brian
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beleg2

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #3 on: April 10, 2010, 03:10:44 PM »
For steeper rifling you can try a modern barrel, most are 1-10" to 14".
I have an underhammer with an old Mauser .313" barrel.
I tried many times but could not get good accuracy using buckshot.
I have to try it with RBs.
Martin

Daryl

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #4 on: April 10, 2010, 06:55:45 PM »
Slychief - check the BP ctg. barrels listed in track's site for rates of twist.  You can get several different sizes, shapes and tapers.  They won't be longer than 35", though, but they do have 'bullet' twists.  Another option, equally or more expensive than a dedicated barrel from Rayle, Rice, etc, is to buy a liner of the size and twist you want.

Offline Dphariss

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #5 on: April 11, 2010, 03:05:58 AM »
I would like to know of any 32 caliber barrels being made with faster rifling than what seems the standard (1:48").


I have been thinking that a quicker twist could make lighter loads more accurate with reduced loads for squirrel hunting.   Then, maybe a pulled shot through the shoulders might make similar damage to a 22LR instead of ripping things to shreds.

Maybe rates of twist around 1:20 or 1:30 might group roundballs well with 10-15 grains 3f.   (Just throwing these numbers out there as an example of what I mean).

Do any of you know of a maker with such barrels ready to sell?  Any that would make such a barrel?

Thanks for any insights!   Skychief.



I used to shoot rabbits with 15 grains in a 66 twist 32 douglas. But the ranges were in feet.
You might want to try a 48 twist first since you can get one off the shelf. You might be surprised how it shoots. The ranges involved with shooting squirrels in the top of trees is not compatible with 15 grains of powder based on my shooting with the 32 percussion I had when I was a kid.
15 grains may give a bb gun trajectory that will make hits difficult.
Trying to reinvent the wheel is often an exercise in futility. Most cartridge barrels have rifling .0035 to .004 deep.

Dan
He who dares not offend cannot be honest. Thomas Paine

Offline Skychief

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #6 on: April 11, 2010, 03:48:29 AM »
All points to ponder guys...thanks.

In a 32 caliber with 1:48" twist, what minimum powder charge is needed for minute-of-squirrel-head accuracy at 25-30 yards?

I know that every rifle has its own mind and all.   But, generally speaking, what minimum charge does the 1:48 twist 32 calibers need to shoot an inch or less at 25-30 yards???

Daryl

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #7 on: April 11, 2010, 05:22:52 PM »
Sorry- I shoot 35gr. at all ranges, every shot.  I have tested as low as 25gr. and that load makes a 3/8" hole for 5 at 25 yards - same load gives horrible accuracy at 50 - from a 48" twist .32.

Offline Dphariss

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #8 on: April 11, 2010, 05:27:00 PM »
All points to ponder guys...thanks.

In a 32 caliber with 1:48" twist, what minimum powder charge is needed for minute-of-squirrel-head accuracy at 25-30 yards?

I know that every rifle has its own mind and all.   But, generally speaking, what minimum charge does the 1:48 twist 32 calibers need to shoot an inch or less at 25-30 yards???

Round balls are notoriously easy to stabilize. Bullets can be very finicky but RBs don't seem to care.
I used to shoot about 30 grains in  a 66 but I was a kid and it shot well enough for what I was doing.
The smaller the ball the less efficient the rifle is. A 440 grain ball will produce 1600 fps with 1/3 ball weight of ff Swiss powder in my 30" barreled FL. Off the top of my head the 32 is going to require about 40-45% of fff to get to the same velocity.  I guess one could say its too much power to shoot squirrels, but I shot a lot of squirrels with fairly HV loads when I was a kid with 32-36-40 caliber rifles
I would need to test a 32 with various charges before thinking that 15 grains will work at 30 yards. Its very low velocity load and simply pokes a hole in a rabbit at 10-15 feet. I never used it except in the grove behind out house shooting rabbits for that reason. This was a 32" Douglas barreled  percussion rifle. A flint rifle would *probably* be slower. Light charges may produce a higher velocity variation as well.
This would be an interesting experiment but I would not go faster than about 30" and would have it rifled .008-.010 deep. Personally I doubt its worth the trouble. But only testing will tell the real story. The smaller diameter balls have far less rotational inertia and I think this will allow using a faster twist  and still allow enough powder for  good velocity.
A hunting arm needs enough velocity to give it a useful trajectory for the game being hunted or the expected range since ball size is not critical this is the only real limitation in a small game rifle. If the trajectory allows the same hold for the range needed for hunting say 25-40 yards, I don't think I ever shot a squirrel or rabbit much over this, and the accuracy is an inch or less at the max range you are good to go.

In the end you might end up using as much powder in the fast twist as a 48" twist would use anyway. Barrels can be contrary at times and will not always do what one wants or expects.
I would contact Long Hammock Barrels 352 748 7373

Dan
He who dares not offend cannot be honest. Thomas Paine

bs2

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #9 on: April 11, 2010, 06:52:56 PM »
For steeper rifling you can try a modern barrel, most are 1-10" to 14".
I have an underhammer with an old Mauser .313" barrel.
I tried many times but could not get good accuracy using buckshot.
I have to try it with RBs.
Martin

Beleg2,
Have you tried some paper patched bullets?
Bruce

beleg2

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #10 on: April 11, 2010, 10:24:46 PM »
Hi bs2,
I have found a bullet that works yet. I plan to try a short gascheck .308" bullet when I find one. ;)

I have try buck shot as a RB with paper cones as Daryl recommend but get bad accuracy and difficult loading. I try this barrel only a couple of times.

I have heard that this barrels works on some pistols but I could not make it work in my rifle.

Martin

northmn

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #11 on: April 12, 2010, 05:23:24 PM »
I had a couple of 32's.  One was with a Douglas barrel and 1-66 and the other likely a Montana with a 1-48.  Both shot about the same charge with accuracy.  The 1-48 did not seem to have any advantage with lower charges.  It owuld be less expensive to gt a smaller caliber like a 25, 28 or so from Rayl as they are standard than going to a custom twist which may or may not do what you want.  A pure lead RB will do damage at surprisingly low velocities.  I shoot buckshot in my 25 and thought about trying the harder shot over the pure lead I got from Track.  Even so the Rayl barrel likes about 20 grains of 3f or 15 grains of 4f over hunting distances.  At close range you still want to head shoot.  I have rib shot them with little waste also.

DP

cal.43

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #12 on: April 13, 2010, 05:25:36 PM »
http://www.lothar-walther.de/43.php
German Gun-barrel factory

Daryl

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Re: Any 32 caliber barrels w/steeper rifling than 1:48?
« Reply #13 on: April 13, 2010, 07:38:04 PM »
Hi bs2,
I have found a bullet that works yet. I plan to try a short gascheck .308" bullet when I find one. ;)

I have try buck shot as a RB with paper cones as Daryl recommend but get bad accuracy and difficult loading. I try this barrel only a couple of times.

I have heard that this barrels works on some pistols but I could not make it work in my rifle.

Martin


I would not expect paper ctgs. to work in small bores due to the pressures involved.  We know they will work as small as .54 cal, but that's probably about it.  I am speaking of same accuracy as patched balls and same point of impact.  These are basically for hunting loads for a fast second shot. With my .69 using paper ctgs., I can load, cap, aim and fire in 8-10 seconds.  Technically speaking this is faster than a military flintlock musket with paper ctgs. as they figured 3 to 4 a min. One thing to make certain of, is the paper wrapped around the bullet engraves somewhat in the rifling, otherwise, accuracy will suffer.