Case H2O Capacities

[truck driver]

For everyone wondering what you gain in case capacity for the 35 Whelen AI I finally got a small digital scale to weigh my brass and get the H2O capacity so I could tune my loads better.
I only had Nosler once fired fire formed AI brass for comparison to the standard 35 Whelen and Remington once fired brass for the standard so it's not really apples and apples but will give you and Idea of what you gain or loose. Also to note is that you loose OAL case length when you AI a Whelen case and the neck shortens a little when the case and shoulder are formed.
The Remington cases held an avg. of 72.77gn of water while the Nosler 35 AI cases held 76.13gn of water that's a difference of 3.36gn of capacity increase for AI case.
There are other benefits to the AI case than just added capacity which I won't go into. Everyone has an opinion and are entitled to it. :roll: :lol: :mrgreen:

 

[RaySendero]

td,
Here's a list I've had for sometime to compare grains of water capacity from one case to another:

Cartridge Case Capacity
.223 Rem (R-P) 31.4
.22-250 Remington (W-W) 44.6
7mm-08 Remington (R-P) 52.2
.243 Winchester (W-W) 52.8
.243 WSSM (W-W) 53.0
.308 Winchester (W-W) 53.5
6mm Remington (R-P) 54.6
.223 WSSM (W-W) 55.0
6.5x55 Swede (N) 55.0
7x57 Mauser (W-W) 55.6
8x57JS Mauser (W-W) 62.7
.240 Weatherby (Wby) 63.1
.25-06 Remington (W-W) 65.0
.270 Winchester (F C) 67.4
.30-06 Springfield (R-P) 68.0
.280 Remington (R-P) 68.6
.444 Marlin (R-P) 69.5
.35 Whelen (R-P) 72.6
.350 Remington Mag. (R-P) 73.7
.45-70 Government (F C) 75.5
.270 WSM (W-W) 78.9
.300 WSM (W-W) 79.0
.264 Winchester Magnum (R-P) 81.5
7mm WSM (W-W) 83.0
7mm Remington Mag. (W-W) 83.2
.270 Weatherby Mag. (Wby) 85.3
.257 Weatherby Mag. (Wby) 85.6
.338 Winchester Mag. (W-W) 85.6
7mm Weatherby Mag. (Wby) 87.5
.300 Winchester Mag. (W-W) 90.4
.458 Winchester Mag. (W-W) 93.3
.375 H&H Magnum (N) 96.4
.300 Weatherby Mag. (Wby) 100.4
.340 Weatherby Mag. (Wby) 102.1
.416 Rigby (F C) 132.6
.460 Weatherby Mag. (Wby) 144.7

I don't have the original reference, so if you get a much different number in your measurements let me know please.
I believe that table is based on full up to the top of the case neck/mouth, which may not be the best when powder is filled more or less to the beginning of the neck. I've just used this as a relative comparison. Anyway hope this helps you.

 

[truck driver]

Thanks for the reference list . I see were my figures for the 35 Whelen R-P case is with in a 10th of a grain so I must have done something right.

 

[truck driver]

Here's a picture of the scale I bought for $27.95 plus shipping.

 

[Wyo7200]

Ray, I'll add some of my cases for that list tomorrow. Just writing this tonight so I can find it tomorrow.

 

[RaySendero]

ts, Wyo,

I copied that info to a Excel spread sheet some yrs ago. But, for some reason didn't note the source. I've found it useful to me when discussing cartridges and wildcats. Also, when beginning load work-up on a new to me cartridge.

The only one I've encountered that really varied from those numbers was the 8mm Mauser. Its not that that number is wrong - Its probably OK on average. Just that I've seen a wide variation in case capacity from one case manufacturer to another - Even to the point that a safe load in one case brand would be unsafe in another brand!

I saw that from loading a batch of mixed cases. Usually I sort by case brand, but that time I didn't. When had all the powder charged and all these cases on block, I always do a visual fill check before seating the bullets. Those 8x57 cases were all over the place on fill levels. I had weighted each charge. I dumped them and weighted the charges again - Same variation! So I dumped them again and didn't load'em.

 

[Wyo7200]

I added some of mine that were different and sorted them. Should be able to copy and paste into excel.

.22-250 Remington	Lapua	45.1
.22-250 Remington	W-W	44.6
.223 Rem	R-P	31.4
.223 WSSM	W-W	55
.240 Weatherby	Wby	63.1
.243 Winchester	W-W	52.8
.243 WSS	W-W	53
.25-06 Remington	Nosler	69.1
.25-06 Remington	RP	67.3
.25-06 Remington	W-W	65
.257 Weatherby Mag.	Wby	85.6
.264 Winchester Magnum	R-P	81.5
.270 Weatherby Mag.	Wby	85.3
.270 Winchester	F C	67.4
.270 WSM	W-W	78.9
.280 Remington	R-P	68.6
.300 Weatherby Mag.	Wby	100.4
.300 Winchester Mag.	W-W	90.4
.300 WSM	W-W	79
.30-06 Springfield	R-P	68
.308 Winchester	W-W	53.5
.338 Winchester Mag.	W-W	85.6
.340 Weatherby Mag.	Wby	102.1
.35 Whelen	R-P	72.6
.350 Remington Mag.	R-P	73.7
.375 H&H Magnum	N	96.4
.416 Rigby	F C	132.6
.444 Marlin	R-P	69.5
.45-70 Government	F C	75.5
.458 Winchester Mag.	W-W	93.3
.460 Weatherby Mag.	Wby	144.7
300 Blkout	Nosler	24.4
300 Blkout	SSA	23.6
300 Blkout	FC	24.1
300 Blkout	Fiocchi	23.4
5.56x45	LC	30.4
5.56x45	PPU	29
6.5 Creedmoor	Hornady	53.4
6.5x55 Swede	N	55
6mm Remington	R-P	54.6
7.62x51	FC	54.7
7.62x51	LC	54.8
7mm Remington Mag.	RP	86.2
7mm Remington Mag.	FC Nickel	85.5
7mm Remington Mag.	W-W	83.2
7mm Weatherby Mag.	Wby	87.5
7mm WSM	W-W	83
7mm-08 Remington	R-P	52.2
7x57 Mauser	W-W	55.6
8x57JS Mauser	W-W	62.7

 

[RaySendero]

What's a .243 WSS ?
And plz check that 25-06 Nosler = 69.1 ?

 

[Wyo7200]

Bummer this doesn't look good on tapatalk.

It's probably your .243 wssm. Formatting issue in excel deleted last character of each case. M must have been last character.

That 69.1 is accurate. The brass is thin. I think it measured .011 at the neck. I've averaged 20 cases 3 times and got 69.1.

 

[RaySendero]

just checking - thx