58 cal rifling

[axman]

I’m contemplating having Mr Hoyt rebore a 56 tc to 58 cal for round ball use.
Any recommendations as twist and groove style.
Thanks

[richs]

Tell Bob what you want to shoot out of the rifle and let him decide.  He has a lot of experience.
Rich

[Pukka Bundook]

Exactly as RichS says, Axman.

[Dphariss]

48" to 66"

Anything slower is too slow IMO. Wide lands narrow grooves. Loads easier and will even allow the use of harder lead.
Dan

ARRGHH. Wide Grooves NARROW lands.. GEEZ I need to learn to proof read.

[Joe Schell]

I had a 58 rifle with a Hoyt barrel rifled 1-60 , it shot very well

[mikeo]

I purchased that rifle from Joe, and yes it does shoot very well.

Mike O.

[Dphariss]

NARROW Lands and WIDE grooves load easier.

My bad in the earlier post.

Dan

[utseabee]

Bobby Hoyt's gain twist works really well in .58, I am sold on it now. I would do whatever he recommends for that particular barrel.

[hanshi]

While not a .58 I do have a .54 that's a spectacular performer with light to heavy powder charges.  Twist is 1-66".

[Anonymous]

Have two Bobby Hoyt 58 caliber rebores (26” TC Renegade barrels) and both scare the daylights out of an inch at 100 yards. Per Bobby’s recommendation, 1-60 radius bottom.  Use 80 grains of Swiss fff as primary load. Slower twist, expect to use a lot more powder for accuracy.

[varsity07840]

NARROW Lands and WIDE grooves load easier.

My bad in the earlier post.

Dan

Thanks Dan. I thought that was what you meant. I agree with you about the twist, especially in that short renegade barrel. The slower the twist in a short barrel, the more powder you need to keep it from knuckleballing as the range increases. I have an original .69 cal "bear rifle" with a very slow twist 30" barrel that groups fine with 120 gr of 2F at 50 yards but can't stay on the paper at 100. It needs at least 150 gr. to get right.

[EC121]

Frank Bartlett and some friends used to shoot  Getz  .58s a lot.  He used a 1-56" twist with a light load for targets.  They were usually winners at the matches.  That twist could also be juiced up for hunting.

[Fyrstyk]

I have had Mr. Hoyt re-bore two barrels for me to .58.  A Browning Mountain Rifle and a T/C renegade flinter barrel.  Both got his radius grooved 1:66" twist rate.  Both shoot 100 yard groups of 2" or less from the bench.  The Renegade barrel likes 100 gr of 2f whereas the BMR likes 120gr of 2f.  Mr. Hoyt does great work.  We are lucky to have his services available at very reasonable prices.

[Daryl]

I have a 66" twist in my .69.  It is shooting into about 2" at100 meters with 85gr. 2F, and one-holing for 5 shots at 50 meters. If one wants tighter groups at 100 meters, one can simply add more powder.  It will hold that accuracy with up to 200gr. 2F in the 66" twist but I had settled on 165gr. as being best, just as accurate as 200gr., but delivering the trajectory I was after, at 1,550fps.
I have had 3 .58's. They had 48" twist in the Enfield which shot well with 85gr. 2F, 72" twist in a Zouave, which shot best with 120gr. 2F and a 66" twist Large Barrel that shot best with 140gr. 2F.
So- each is unto their own, but the trend is slower twist, more powder - I would choose a 60" to 66" and be happy. If I didn't want to do any long range shooting, ie: 200 meters or further, I would
opt for the 48" twist & be happy about being able to use less powder for equal accuracy, out to 100 meters or so.

[axman]

Thanks to everyone for the advise.
Great info to be had
Jim

[Mike Brooks]

If you live east of the Mississippi 1 in 48. If you live west 1 in 66. A good compromise would be 1 in 56. Most of the old guns had about a 1 in 48 twist no matter what the caliber.