barrel contours

[g n brezinski]

how do you figure out what weight of barrel to use on a action given you know the weights of every thing else.
example a hall action ,McMillian stock weaver scope rings and bases now a barrel blank that is 1.20 for 5 inchs and than tapers to .850 at 26 inchs.where do you cut it to make weight for say 10.5 class.
gary b

 

[CMaier]

add up all the other weights, subtract from 10.45..10.4
and go look at the top of this page at the bbl weight calculator.
the reamer will make it weigh less
ask your gunsmith and if that is you,
see the above.

how do you figure out what weight of barrel to use on a action given you know the weights of every thing else.
example a hall action ,McMillian stock weaver scope rings and bases now a barrel blank that is 1.20 for 5 inchs and than tapers to .850 at 26 inchs.where do you cut it to make weight for say 10.5 class.
gary b

 

[coyotechet]

chamber size

When using the above barrel weight calculator . What do you use to calculate the chamber weight loss?
Chet

 

[CMaier]

i do not know.
take a bbl stub, weigh it, chamber it and weigh it again ?
diff is the reduction for the chamber.
go all the way and thread the od too

 

[Mountain Mike]

I did not look at the spreadsheet, but if it wants chamber weight, do the following:

416 stainless weighs about 480 pounds per cubic foot. Brass is roughly 530 and water is 62.4.

1. Weigh a case, divide by 7000 (if weighed in grains) and divide by 530 to get volume in cubic feet
2. Look up or weigh the water weight of your case, divide by 7000 and divide that by 62.4 to get volume in cubic feet
3. Add the case and water volumes to get chamber volume in cubic feet
4. Multiply chamber volume by 480 to get weight of steel (pounds) in chamber volume

If the spreadsheet is looking for chamber volume, stop at step 3. There are 1728 cu in per cu foot if you need cu in.

 

[coyotechet]

Thanks but I was talking about use the above calculator. I have done it many other way. I see that it accounts for tenon length,diameter and threads. just was hoping that I may have missed something.

Chet