I have an XP chambered in 7 TCU that is getting long in the throat and I don't like to shake the gun to keep the bullet tip from hitting the back of the chamber while loading during a match. I was thinking about having the current chamber reamed out to something larger and then switching to a 308 size Model 7 bolt. I know the current chamber is shorted than a 7 BR and could have it reamed to 7 INT but was wondering if there was some in between 7mm cartridge. I have had several 7 INT guns in the past so wouldn't mind going that route but also like the smaller 7 BR to save powder and get same results. An in between cartridge would clean up my old chamber. What was the 7 Laser? Might still be too short if it was based upon the 7 BR. Any ideas?
As of 1807 on 9/12/18
I guess I should have looked in my load manual to see the case dimensions of the 7 TCU to see what was needed to clean up the chamber. Next best cartridge is the 7 IHMSA.
Guess that is what I will plan for over the winter. I like the 7 IHMSA so it will allow me to keep my current barrel with just a rechamber job.
7mm in between cartridge - DUH
- 260 Striker
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7mm in between cartridge - DUH
Lynn Shultz
IHMSA #15692 since 1980
Past Match Director Logan Handgun Association
Current VP Logan Handgun Association
NRA Member
United States Air Force Veteran
Retired USAF Civil Servant (47 years)
937-407-4885
IHMSA #15692 since 1980
Past Match Director Logan Handgun Association
Current VP Logan Handgun Association
NRA Member
United States Air Force Veteran
Retired USAF Civil Servant (47 years)
937-407-4885
- aggshooter
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Re: 7mm in between cartridge - DUH
If it's going to involve a gunsmith, why don't you just have a new 7TCU chamber cut on your old barrel? Gunsmith unscrews barrel, reams chamber a bit deeper (maybe .100"), cuts off an equal amount of threads, headspaces your barrel back into the action. I think that's fairly common among benchrest guys who don't want to toss a good barrel just because the breech end rifling is getting a little worn. You keep all your brass, dies, bolt, etc.
Rich Hawkins
#29087
IHMSA VP
"Go ahead and shoot. The bullet has to go somewhere."
George Hawkins 1917-2000
#29087
IHMSA VP
"Go ahead and shoot. The bullet has to go somewhere."
George Hawkins 1917-2000
- 260 Striker
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Re: 7mm in between cartridge - DUH
Rich, Actually I'm thinking of just having a smith ream out the chamber to 7 INT. That will clean up the TCU chamber and maybe make a nice clean throat too. When loading the TCU at matches about 1/2 the time the bullet nose will hit the back of the chamber while loading and I have to shake the gun to get the nose to go into the TCU chamber. Also tried to use fingers to push cartridge into TCU chamber and that works about 1/2 the time. Going to the 7 INT will make the chamber much bigger and cartridges should slide in with no resistance. Just getting picky in my old age!!!!!
Lynn Shultz
IHMSA #15692 since 1980
Past Match Director Logan Handgun Association
Current VP Logan Handgun Association
NRA Member
United States Air Force Veteran
Retired USAF Civil Servant (47 years)
937-407-4885
IHMSA #15692 since 1980
Past Match Director Logan Handgun Association
Current VP Logan Handgun Association
NRA Member
United States Air Force Veteran
Retired USAF Civil Servant (47 years)
937-407-4885
Re: 7mm in between cartridge - DUH
Ken Waters' brainchild the 7-30 Waters
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Re: 7mm in between cartridge - DUH
Preferred 7-30 loads in 10" barrel?
Pat Camus
Eastern PA @ Falls Township or Wilkes-Barre
NRA-Endowment Member
Eastern PA @ Falls Township or Wilkes-Barre
NRA-Endowment Member
Re: 7mm in between cartridge - DUH
130 gr. bullet + 33.0 gr. IMR 4064 = 2200 FPS
consider a super 14 Bbl for +100 FPS
interesting read:
10" - http://www.castbullet.com/shooting/7tcu2.htm
14" - http://www.castbullet.com/shooting/7tcu.htm
in my opinion, more shooters have been lured to the contender by witnessing the performance of the 7-30 Waters cartridge in a handgun than any other cartridge.
Thank you, sir
consider a super 14 Bbl for +100 FPS
interesting read:
10" - http://www.castbullet.com/shooting/7tcu2.htm
14" - http://www.castbullet.com/shooting/7tcu.htm
in my opinion, more shooters have been lured to the contender by witnessing the performance of the 7-30 Waters cartridge in a handgun than any other cartridge.
Thank you, sir
- 338whisper2
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Re: 7mm in between cartridge - DUH
Since you have an XP. Why not try the 7-08?
Life member IHMSA 57411L
Life member NRA
80X80
Life member NRA
80X80
Re: 7mm in between cartridge - DUH
The 7/08 would make an excellent choice. I've been shooting mine for almost 8 years now. It is a tac driver, to say the least. I use a reduced load to manage recoil and I think that you might find that this would work very well for you.
Al Life 1707
Match Director for Tri-State Gun Club and Board member
President of the Iowa Handgun Metallic Silhouette Club
Joined IHMSA 1978
Life Member IHMSA, NRA, USPSA
Past Editor of IHMSA News
Past Region Five Director
Past Sec/Tres for IHMSA
Match Director for Tri-State Gun Club and Board member
President of the Iowa Handgun Metallic Silhouette Club
Joined IHMSA 1978
Life Member IHMSA, NRA, USPSA
Past Editor of IHMSA News
Past Region Five Director
Past Sec/Tres for IHMSA
Re: 7mm in between cartridge -remember Don Bower
7mm Super Bower
http://www.retro.co.za/gundex/articles/ ... curacy.pdf
One sweet shooter!
Surprisingly mild pressures as indicated by spent primers and manageable recoil using the rifle platform
http://www.retro.co.za/gundex/articles/ ... curacy.pdf
One sweet shooter!
Surprisingly mild pressures as indicated by spent primers and manageable recoil using the rifle platform