Daft question, possibly?

[User00056]

Looking for some advice, please? I want to replicate (as best I can) the Federal Powershok 55 grain sp round for my .223. It's not screamingly fast at 3240fps, but I like the load and want to keep it. I homeload anyway, and it makes sense to avoid having to buy factory if I can avoid it.

Anyway, I think I have two possible approaches.The Lee manual states a speed of 3343fps with the max' load of N-140 (which I already have), so I could work back from there. Trouble with that idea is, Lee doesn't give a load reduction factor and I absolutely detest protracted load development. So I don't really want to work up a new load as I want as little range time as possible.

Option 2 is to use a different powder. Lee states N-130 at 23.1 grains gives 3032fps, so this would perhaps be more of a plug and play solution (obviously subject to verification).

I suspect I may already know the correct answer, but I'd like some other opinions nonetheless?

 

[kenbro]

Looking for some advice, please? I want to replicate (as best I can) the Federal Powershok 55 grain sp round for my .223. It's not screamingly fast at 3240fps, but I like the load and want to keep it. I homeload anyway, and it makes sense to avoid having to buy factory if I can avoid it.

Anyway, I think I have two possible approaches.The Lee manual states a speed of 3343fps with the max' load of N-140 (which I already have), so I could work back from there. Trouble with that idea is, Lee doesn't give a load reduction factor and I absolutely detest protracted load development. So I don't really want to work up a new load as I want as little range time as possible.

Option 2 is to use a different powder. Lee states N-130 at 23.1 grains gives 3032fps, so this would perhaps be more of a plug and play solution (obviously subject to verification).

I suspect I may already know the correct answer, but I'd like some other opinions nonetheless?

Vhit data: 55 Berger FB.
N130 x 23 grains = 3196 fps.
Ken.
Ps. In my 222 I use 19 grains N120 for 50, 52, 53and 55 grain bullets, not a hot load but very accurate with each bullet weight.

 

[enfieldspares]

The manuals used to offer a starting load (from which they said drop by 5% if ANY of the components - bullet, primer, case) were changed from their recipe and a maximum load.

But why not go to the source and see what the official Vihtavouri manual has as information?

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.

www.vihtavuori.com