m 70 conversion

[ann brezinski]

can a 70 action be set up to handle 300 h and h mag cases and how is this done.i had a 70 in 7 mm magnum and would like to buy another one but the action is not the came magazine length as a 700 I was told.
gary b

 

[IdahoCTD]

Have a Wyatt mag box installed.

 

[Greyfox]

The pre-64 Model 70 Actions were all the same length and the magazine box, follower, bolt stop, and bolt faces were of different sizes to accommodate the different caridges. The 300/375 H&H's had a milled out receiver to accommodate the longer H&H..

Post 64 Winchesters prior to the the early 90's or so, all actions were all the same length and dealt with different cartridge sizes same as the pre-64's, but the same action was used to handle the H&H with no milling required.
The post 90's versions were available in short or long action, and push feed or controlled round feed. To convert to a 300 H&H from any post 64 long actiion with a magnum bolt face you will need a magazine box, follower, and bolt stop to accommodate the 300/375 H&H. These parts should be obtainable since the 300/375 H&H has been available in the post 64 Model 70's.

 

[Lenny Foffa]

can a 70 action be set up to handle 300 h and h mag cases and how is this done.i had a 70 in 7 mm magnum and would like to buy another one but the action is not the came magazine length as a 700 I was told.
gary b

Hi Ann i am dealing with this exact issue my self right now ! I want to build a 300 H and H ,so i bought a 1953 Model 79 that is a 300 Norma Mag. right now ! The action cannot be opened up
enough internally to accommodate the increased length of the 300 or 375 H and H ! so the Winchester Barrel i purchased , in 300 H and H is now also of no use ! i hope the Pre64 company will allow me to return it for a refund !!

 

[8x68s]

see @MagnumManiac post #10 in Lenny's original... the action CAN be opened up!

Hi Ann i am dealing with this exact issue my self right now ! I want to build a 300 H and H ,so i bought a 1953 Model 79 that is a 300 Norma Mag. right now ! The action cannot be opened up
enough internally to accommodate the increased length of the 300 or 375 H and H ! so the Winchester Barrel i purchased , in 300 H and H is now also of no use ! i hope the Pre64 company will allow me to return it for a refund !!

 

[Lenny Foffa]

can a 70 action be set up to handle 300 h and h mag cases and how is this done.i had a 70 in 7 mm magnum and would like to buy another one but the action is not the came magazine length as a 700 I was told.
gary b

Hi I am going through this process right now!! you need to contact Magnum Maniac and Taj!! they among several others are very knowledgeable !