View Full Version : 7mm-30 Waters vs 7mm-30 Waters Improved
When fire forming my .30-30 Winchester cases into 7-30 Waters I had a bit of a surprise. See the attached photo of a fired case vs a full-length resized cartridge. I suspect the rifle barrel for my Contender was re-chambered to an Improved cartridge without the barrel being re-stamped. Can anyone visually confirm this?
My Cartridges of the World book seems to validate this based on the photos in the book.
Second question. Assuming I am correct, will a standard 7-30 Waters neck-sizing die perform the same as an Improved neck-sizing die? All reloads will be in a single Contender barrel.
M-Tecs
11-10-2019, 10:59 PM
The neck looks to be to short for an AI.
Some specs. here https://www.chuckhawks.com/7-30Waters_Imp.htm
3leggedturtle
11-10-2019, 11:03 PM
Looks like the 7mm cartridge that gary reeder made/touted for contenders.
M-Tecs
11-10-2019, 11:14 PM
Looks like the 7mm cartridge that gary reeder made/touted for contenders.
I think you nailed it.
http://forums.accuratereloading.com/eve/forums/a/tpc/f/6121043/m/62810439/xsl/print_topic
https://www.reedercustomguns.com/information/gnr_cartridges.htm
Lets go with the GNR assumption for a moment. How do you reload it? Where do you get the dies? If its a custom die set for $160+ I will return the $230 barrel that was mismarked. I do not mind a $50 problem but I do not need another project gun.
3leggedturtle
11-11-2019, 01:15 AM
Maybe you'll get lucky and can neck size it with 7-30 die or a 7mm08 , flipping short neck tho! Case has very little taper,maybe a 30/30AI will size the body. CH4D might have a similar die reasonably priced. Happy searching. Best i can tell you for now. Todd/3leg
cwlongshot
11-11-2019, 08:19 AM
Wow thats a short neck!!
Yea I agree its def not a “factory” chamber! ::)
I like the lil Waters! I havent replaced mine yet. This last spring, I sold off a 30/30 to help fund it and it hasnt happened yet. :(
I made brass from 375 Winchester cases for mine.
Good luck
CW
I spoke to the owner at Reeder guns and he was very informative. If it was a GNR cartridge the dies are $125. It could be done but I would have to send barrel to confirm chambering. With the time and money it starts to become a project.
Reeder did indicate case life would be longer due to headspacing on the shoulder, 300 fps faster, form from .30-30 Winchester, and indicated that short neck was not a problem (.375 Winchester and .38-55 would decrease internal volume).
My two cents, factory cartridges exist for a reason. If this cartridge was on the cutting edge I think we would see it more. The GNR predates the 7-30 Waters by three years. If I need more 7mm power, the 7mm-08 or 7mm Magnum are called for calling for an Encore. Making a break action light magnum without factory printed and SAAMI support seems an unnecessary risk.
Called seller and they are a class act and will refund me. I will let them take on the project if they desire.
dk17hmr
11-11-2019, 08:52 PM
Was that a pistol or carbine barrel? A carbine would be a little deer stomper.
Carbine barrel. Highly effective yes but looking for semi-custom wildcat, not full-on project. If I need a true deer stomper I have bigger guns and calibers. Our 100-150 lb deer in SC do not require significant firepower.
As a side note, my understanding is the Contender (particularly G1) is known for stretching if you get too wild with the energy and pressure.
As a future note for anyone else reading this, Reeder confirmed that a standard neck-sizing die would push the 7mm GNR shoulder back if used.
dk17hmr
11-11-2019, 11:22 PM
Hornady makes universal neck sizer dies based on caliber. With that tiny neck I'd want specific dies though.
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions Inc. All rights reserved.