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Author Topic: Current twist rate for .357 MAG?  (Read 1272 times)

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Offline Dinny

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Current twist rate for .357 MAG?
« on: November 07, 2010, 02:53:34 PM »
I'm dreaming about a better mousetrap ::)......I checked the FAQs and it states 1-18 3/4" or 1-15 1/2". What are the current ones being twisted?  I would think that 1-15 1/2" would be fine for a 35 Whelen rechamber but not 1-18 3/4".

Thoughts?

Thanks, Dinny
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Offline OR-E-Gun Bill

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Re: Current twist rate for .357 MAG?
« Reply #1 on: November 07, 2010, 03:46:38 PM »
Dinny, my .357 Mag. "Made in Ilion" has the 1:15-1/2" twist rate. Can't help ya with the other question.

Bill
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Offline Dinny

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Re: Current twist rate for .357 MAG?
« Reply #2 on: November 07, 2010, 03:59:13 PM »
Quote from: OR-E-Gun Bill on November 07, 2010, 03:46:38 PM
Dinny, my .357 Mag. "Made in Ilion" has the 1:15-1/2" twist rate. Can't help ya with the other question.

Bill

That's encouraging! Maybe it will work.

Thanks, Dinny
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Handi Family: 357 Max, 45 LC, 45-70, 300 BLK, 50 cal Huntsman, and 348 Win.

"If there must be trouble, let it be in my day that my child may have peace"
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Offline gcrank1

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Re: Current twist rate for .357 MAG?
« Reply #3 on: November 08, 2010, 11:32:05 AM »
Dinny, my Greenhill chart says a 1:19 twist is good for a max 237gr. bullet @ 1.01" long
and the 1:16 a max of 282gr. @ 1.19" long.
Hope this is helpful.
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Offline Dinny

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Re: Current twist rate for .357 MAG?
« Reply #4 on: November 08, 2010, 02:12:27 PM »
Quote from: gcrank1 on November 08, 2010, 11:32:05 AM
Dinny, my Greenhill chart says a 1:19 twist is good for a max 237gr. bullet @ 1.01" long
and the 1:16 a max of 282gr. @ 1.19" long.
Hope this is helpful.

Thanks, it does!


Thanks, Dinny
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Handi Family: 357 Max, 45 LC, 45-70, 300 BLK, 50 cal Huntsman, and 348 Win.

"If there must be trouble, let it be in my day that my child may have peace"
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Offline quickdtoo

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Re: Current twist rate for .357 MAG?
« Reply #5 on: November 08, 2010, 02:19:07 PM »
Dinny,

I've shot 250gr spitzers in my 1:16" RMEF Whelen with no problems at 100yds, dunno what they'd do at 200-300yds tho. I don't recollect anyone saying they had a 1:18¾" twist 357Mag barrel on the poll that we did once upon a time, not saying they don't exist, just that the source at H&R for the twist info may have been old H&R Inc info.

Tim

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Offline Dinny

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Re: Current twist rate for .357 MAG?
« Reply #6 on: November 08, 2010, 02:28:32 PM »
1:16" twist is probably the most versatile twist allowing for a wide weight range of bullets to be used. I can't imagine that the 1:15 1/2" twist would be all that bad. Perhaps a good gunsmith could cut a Whelen chamber with minimal headspace and increase the Whelen's functionality and reliability.

Thanks, Dinny
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Handi Family: 357 Max, 45 LC, 45-70, 300 BLK, 50 cal Huntsman, and 348 Win.

"If there must be trouble, let it be in my day that my child may have peace"
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Offline gcrank1

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Re: Current twist rate for .357 MAG?
« Reply #7 on: November 08, 2010, 03:18:54 PM »
Given a decently straight, cleanly reamed and well rifled barrel, the most important work is properly chambering the thing. How well that is done determines if it will shoot well or not. Dont scrimp there!
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We are only temporary caretakers of the past heading toward an uncertain future
22Mag UV / 22LR  Sportster
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45-70  SS Ultra Hunter with UV cin.lam. wood
12ga. 'Ol' Ugly OverKill', Buck barrel c/w  SpeedStock  and swap 28" x Full bird barrel, 1974

Offline Dinny

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Re: Current twist rate for .357 MAG?
« Reply #8 on: November 08, 2010, 03:27:02 PM »
Quote from: gcrank1 on November 08, 2010, 03:18:54 PM
Given a decently straight, cleanly reamed and well rifled barrel, the most important work is properly chambering the thing. How well that is done determines if it will shoot well or not. Dont scrimp there!

That is a lesson that I have already learned. Fortunately I didn't learn it the hard way. My mother's .357 Max Handi was professionally reamed and throated with a specific bullet in mind. The throat was cut perfectly in-line with the bore. I actually shot several groups that were 5/8" at 100yds.

Thanks, Dinny
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Handi Family: 357 Max, 45 LC, 45-70, 300 BLK, 50 cal Huntsman, and 348 Win.

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Offline PigBoy Crabshaw

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Re: Current twist rate for .357 MAG?
« Reply #9 on: November 08, 2010, 06:51:48 PM »
Dinny, You are a good son. "Mom's 357max" I like hearing that. -gary
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Offline Dinny

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Re: Current twist rate for .357 MAG?
« Reply #10 on: November 09, 2010, 12:13:59 PM »
Quote from: PigBoy Crabshaw on November 08, 2010, 06:51:48 PM
Dinny, You are a good son. "Mom's 357max" I like hearing that. -gary

Good sons don't let their moms shoot 357 Magnums, it's gotta be a Maxi!  :D  ;)

She did tell me just the other day that the long bullets shot much better than the shorter ones.  ;D

Thanks, Dinny
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Handi Family: 357 Max, 45 LC, 45-70, 300 BLK, 50 cal Huntsman, and 348 Win.

"If there must be trouble, let it be in my day that my child may have peace"
Thomas Paine
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