Lyman Cast Data .357 Magnum

Super Sneaky Steve · November 22, 2012, 06:16 PM

Is anyone else using the new 4th edition of Lyman's Cast Bullet Handbook?

The 158grn .357 magnum data for HS6 says it's most accurate with a max dose of 10.2 grn.

All my other sources don't come close to 10 grains of HS6.

Does anyone have experiance with this load?

The bullet I'm using is a Lee mold but looks exactly like the Lyman.

Misssissippi Dave · November 22, 2012, 07:10 PM

Looks like it must be a typo. It happens to the even the best.

kraigwy · November 22, 2012, 07:16 PM

Which Bullet:

All bullets are different, some have more surface area therefore more drag on the barrel..

That would make a difference.

Also each gun is an individual, Reloading Guides are just that, Guides. One needs to tailer his rounds to his individual gun.

myg30 · November 22, 2012, 10:27 PM

ALWAYS work up your loads. Start at the min charge and work up from there looking for sign of brass failure,seperation, flat primers or splits.
There is no load data that is magic and produce the sub moa group in your gun. It takes time and trial and error to find the magical load for each gun you have in the same caliber. What works in a 9mm glock may not shoot well in a HP or a sig.

Good luck, double check data.

Mike

November 22, 2012, 06:16 PM	#1
Super Sneaky Steve Senior Member Join Date: August 9, 2011 Posts: 1,250	Lyman Cast Data .357 Magnum Is anyone else using the new 4th edition of Lyman's Cast Bullet Handbook? The 158grn .357 magnum data for HS6 says it's most accurate with a max dose of 10.2 grn. All my other sources don't come close to 10 grains of HS6. Does anyone have experiance with this load? The bullet I'm using is a Lee mold but looks exactly like the Lyman.

November 22, 2012, 07:16 PM	#3
kraigwy Senior Member Join Date: June 16, 2008 Location: Wyoming Posts: 11,061	Which Bullet: All bullets are different, some have more surface area therefore more drag on the barrel.. That would make a difference. Also each gun is an individual, Reloading Guides are just that, Guides. One needs to tailer his rounds to his individual gun. __________________ Kraig Stuart CPT USAR Ret USAMU Sniper School Distinguished Rifle Badge 1071

November 22, 2012, 07:10 PM	#2
Misssissippi Dave Senior Member Join Date: December 5, 2009 Posts: 1,411	Looks like it must be a typo. It happens to the even the best.

November 22, 2012, 10:27 PM	#4
myg30 Member Join Date: January 20, 2009 Location: Winchester, TN. Posts: 52	ALWAYS work up your loads. Start at the min charge and work up from there looking for sign of brass failure,seperation, flat primers or splits. There is no load data that is magic and produce the sub moa group in your gun. It takes time and trial and error to find the magical load for each gun you have in the same caliber. What works in a 9mm glock may not shoot well in a HP or a sig. Good luck, double check data. Mike