168gr tmk

[Khlit]

Hi all, does anyone have load data on sierra 168 tmk's? Im using IMR 4895 and loading to mag length I read somewhere that they follow the same data as standard 168 smks.

 

[Doom]

The Sierra 6th uses the same data.

 

[Mr Tibbs]

Hi all, does anyone have load data on sierra 168 tmk's? Im using IMR 4895 and loading to mag length I read somewhere that they follow the same data as standard 168 smks.

Reloading Data Center

shop.hodgdon.com

 

[EM_556]

Download the Sierra app. Free reloading data on there

 

[Khlit]

Reloading Data Center

shop.hodgdon.com

Interesting that it uses the same data since it is a much longer bullet. I started it off at 41gr and worked up in .3 increments but at 43.1gr it started feeling pretty crunchy because of how deep these things things need to be seated to fit in a mag. I don't know how safe it would be to go anywhere near the listed 168 smk max charge of 45.4 with these given how crunchy it was at 43gr.

 

[Khlit]

I see max

When you did that did it feel crunchy too?

 

[Mr Tibbs]

Interesting that it uses the same data since it is a much longer bullet. I started it off at 41gr and worked up in .3 increments but at 43.1gr it started feeling pretty crunchy because of how deep these things things need to be seated to fit in a mag. I don't know how safe it would be to go anywhere near the listed 168 smk max charge of 45.4 with these given how crunchy it was at 43gr.

The TMK’s are longer than the standard MK’s therefore the ogive is different. Perhaps the CBTO method could help you in your load development.

 

[Doom]

Sierra puts the max @ 44.7gr. in Winchester brass. You didn’t mention which brass you would be using. Other brass will be less. It not unusual for 4895 to have compressed charges.

 

[Doom]

When you did that did it feel crunchy too?

Incomplete post!

 

[Khlit]

The TMK’s are longer than the standard MK’s therefore the ogive is different. Perhaps the CBTO method could help you in your load development.

Yeah it's for sure a secant ogive bullet problem is my COAL is still restricted to 2.800-2.810.

 

[Khlit]

Sierra puts the max @ 44.7gr. in Winchester brass. You didn’t mention which brass you would be using. Other brass will be less. It not unusual for 4895 to have compressed charges.

Starline small primer match.