Help on charge weights

[grrr300]

Hi all. Doing some reloading for my AR15 but need some help with charge weights. I have some 60 gr. Hornady SP, Vihtavuori N135. In the Hornady Handbook it lists the powder weights at 19.6 gr-22.7 gr. max load. On the Vihtavuori website data for the N135 Vihtavuori it is 23.1 gr.-25.8 max load for a 60 gr. HP.

Hornady Handbook - 19.6 - 22.7

Vihtavuori Website - 23.1 - 25.8

Most of the other powders I have used, H335, Varget, TAC, are all in the 23-27 gr. range. I always start low and work my way up. With the max load weight from Hornady being below the start load from Vihtavuori I am not sure where to start with that big of a difference.

Thanks for the help.

[SavageBrew84]

My Lee book is the only one of the four reloading manuals I own that has any information on N135 powder. With a 60 gr. bullet it's got a starting weight of 23.9 gr. and a never exceed limit of 25.9c (compressed load). Hope that helps

[ra2bach]

I never look at the powder company's recommendation first.

the first time you reload with a certain type of bullet, you should try to use the bullet manufacturers data. different bullets can create variations in pressure which can offset powder chart loads...

[grrr300]

My Lee book is the only one of the four reloading manuals I own that has any information on N135 powder. With a 60 gr. bullet it's got a starting weight of 23.9 gr. and a never exceed limit of 25.9c (compressed load). Hope that helps


Thanks for the reply. I will start out on the low end.

[grrr300]

I never look at the powder company's recommendation first.

the first time you reload with a certain type of bullet, you should try to use the bullet manufacturers data. different bullets can create variations in pressure which can offset powder chart loads...

Thanks for the info. There was just such a big difference in weights between the two. I have not used the N135 before. I prefer H335 but good luck finding any. I will start with the Hornady load data.