Starting load question?

[Mr. 16 gauge]

I'd like to play with some heavier loads than I normally shoot in my 6.5x55 Swede, so I plan on ordering some 140 grain Nosler and I also found some Norma 156 grain bullets I'd like to try.

Problem is, I don't have any data specifically for a 156 grain bullet.:(

I do, however, have some loads for 150 grain and 160 grain bullets, for various powders.

Does it seem logical and responsible to start in the middle of starting loads for those to bullet weights, i.e if a 150 grn starting load is 40.0 grains of powder X, and a 160 grain starting load is 30 grains of powder X, would it be reasonable to start with 35.0 grains for the 156 grain bullet?

It seems logical and reasonable to me, but then again my wife tells me that my brain doesn't work like a 'normal' persons.:rolleyes:;)

[buckhunter]

I would think that should work however start at the lower loads for the on both and work you way up. I do have any manual's available at work and we are blocked from viewing "weapons" but think that should work. I doubt that the load variation between 150 & 160 is much. I do remember in some of the Hornady manuals they gave a range like in .284 the same loading data for 150 & 154 gr bullet. I suspect you know what to lookd for in the pressure creaps up.

And yes I have been told I think weird also. Mostly from the sisterhood.

[powell&hyde]

I think the reason loading manuals advise starting at 10% under max is because of the difference in cartridge brass capacities. Remington brass is known to be thicker at the web end of the shell, whereas Winchester brass is thinner. I stumbled on to a site couple years ago where the author has a huge database of different case capacities by different manufactures. The difference will surprise you, if I can find this site again I will post it here.

[Ridge Runner]

http://www.reloadersnest.com/query_bw.asp?CaliberID=120&BulletWeight=156
cut these loads a couple grains or so and have at it. what rifle do you have?
RR

[muskrat30]

The easy choice is just use data for a similar construction 160 grain bullet. Another factor is the gun. No I'm not advocating going above published data, but you have more margin with an older, lower pressure round when fired in a fairly new gun.