Is there a downside to installing a Wyatt's Extended Mag Box?

[benchracer]

I am considering the purchase of a new production Winchester Model 70 in .338WM. If I decide to go through with it, I intend to have a Wyatt's Extended Mag Box installed to allow me to load bullets like those offered by Cutting Edge and still be able to feed from the magazine.

Is there a down side to having this done?

Are there any issues regarding this that I should be aware of before I decide to go that route?

[benchracer]

I am taking the lack of response to my question as an indication that no one has had any problems related to having an extended mag box installed. I will proceed then , at some point, with my plans.

[HARPERC]

No input but followed along as I have the same question. Hopefully bringing it back around catches the eye of someone who knows.

[Tikkamike]

I have had them put in several rifles that I have shot before and after and never seen any affect on accuracy good or bad. Although you are taking metal out so it is weakening the action to some degree. I have had it done in a 300 win 2 300 ultras and a 375 ultra. I would think if it were gonna be a problem I would have seen it in my 375

[HARPERC]

Thanks Mike, I'm replacing the stock on my 338 RUM. I don't need the length currently but this is the 3rd barrel. Thinking maybe just do it all at the same time who knows what the future holds.

[Tikkamike]

3rd barrel ?? holy smokes there is going to be a lead and copper shortage if you dont slow down

[benchracer]

Thanks, Tikkamike, for your feedback.

My concerns involve the amount of metal removed, smoothness and reliability of feeding after the modification, and the fit of the bottom metal after modification (hindsight, guess I should have stated that up front).

I am glad to know that this modification has worked well in your rifles. I would have to agree that if you didn't have problems in your .375, the mod is probably pretty solid.

Thanks again!