N133 and 108gr Berger

[kd4avp]

N133 apparently is not really optimal for a 108gr bullet. Has anyone ever tested it? Have the powder and bullet, and with supplies being what they are I thought some experimentation may be in order.
Looks like N133 works well with the 70-77 gr bullet.
I use the N133 for my service rifle loads behind a 77 gr SieHPBT.

 

[kd4avp]

By the way...6br load ..forgot to mention that

 

[kd4avp]

N133 apparently is not really optimal for a 108gr bullet. Has anyone ever tested it? Have the powder and bullet, and with supplies being what they are I thought some experimentation may be in order.
Looks like N133 works well with the 70-77 gr bullet.
I use the N133 for my service rifle loads behind a 77 gr SieHPBT.

 

[kd4avp]

Forgot to put this was for 6br

 

[Walt Krafft]

I wouldnt use it. It is too fast and pressure could sky rocket quickly. N140 would be a good choice. N150 would work too. N133 in the 223 with heavy bullets is treading on danger imo.

 

[Laurie]

N133 is WAY too fast burning for this combination. N140/N150 are the usual choices from the Viht range, and a few people say that they get good results with N135. Personally, I'd regard 135 as over-fast burning too for optimal results.

77gn is the heaviest bullet Viht lists for N133 and 135.

https://www.vihtavuori.com/reloading-data/rifle-reloading/?cartridge=63

 

[kd4avp]

Thank you for the input. I had reservations, but thought I would bounce off the forum to get some other view points. Thank you so much!