.58 GM Max Load

[nkbj]

Does anyone have loading data that shows maximum loads for the .58 GM Drop-In barrels?

 

[roundball]

Does anyone have loading data that shows maximum loads for the .58 GM Drop-In barrels?

If you don't get any specifics, for what it's worth I always assumed the T/C barrels and the GM drop in barrels for T/C stocks were equal quality / strength...and always just went by the T/C load data in the T/C manual.

 

[Trench]

I believe I read on their website that 120gr is their max.

 

[nkbj]

Thank you for the info and good thoughts gentlemen, both of you.

 

[George T.]

A long session at the range will show that 120 grains is plenty! There is just not many critters that require more! My 15/16 58 with 120 is a hand full. Geo. T.

 

[Ken Rummer]

My copy of the GM Instruction and Safety Manual for my 58 cal IBS says "NEVER exceed the recommended maximum powder charge of 120 grains Black Powder FFg, Pyrodex RS or Select by volume or its equivalent.

 

[nkbj]

Thanks!

 

[roundball]

Same as T/C's load data

 

[Billnpatti]

The maximum recommended load is 120 grains of 2f. If you choose to load it that heavily, be prepared to pay the price on your end in terms of recoil. Unless you plan to hunt grizzlie bears, I can't imagine any need for that heavy of a load in a .58 caliber gun. A .58 caliber ball has a lot of mass and at even middlin' loads is plenty bad medicine for almost any animal on this continent. If you load conicals in that .58, it is really going to rock and roll you with 120 grains of powder.

 

[nkbj]

Reckon the 32" GM barrel should be about the same as the Renegade. Sure wish the GM was lefthanded but I can live with it.

 

[roundball]

PS:
My slow twists all do very well when I push them, and with proper fit recoil is not an issue.

Example: .58cal Early Virginia: