I liked the 702 carry-handle so much , I bought the 715FT too.
I have yet to run into the probs , I see posted , with either of my units and I'm talking over 8000rds thru the 702 and 4000 thru the 715 using a variety of fodder.
The mags have not jammed on me but loading was sticky after the 10th rd or so.
Easy fix with some sandpaper to slightly round the corners of the bottom edges of the follower.
Probs with dropping the mag ?
After the last shot , the bolt moves forward and is stopped by the mag follower. The bolt has to be pulled back and locked so the mag will easily drop.
So , you can count your shots and have a ghost round left in the chamber ( not exactly safe ) or theres another table top fix to the follower.
The top edge of the follower can be cut down to a level just above the mag lips and a beveled edge at the rear . This will allow the bolt to close after last shot . The mag will drop out and a loaded mag inserted , all done using one hand.
I see posts of fellas loading the mags to the limit and leaving them loaded for extended periods of time , thinking this will help.
My question on this is , how does maximizing the compession of the mag spring help at all ?
I won't load any mag from any rifle to it's max , I want that spring to expand properly every time...and they do.
I load up with 20rd in the 25rd mags ( I have 5 of them )...never a prob.
Cleaning is a pain ..no doubt about that , but my rifles work fine
after 400 - 500 rds before cleaning anyway.
What I'll do...purists will cringe , but...I'll pick out any visible chunks of guck out of the chamber then I take a squirt bottle of varsol (paint thinner ) and squirt varsol inside my units ( barrel , bolt and chamber) brush and pick out anything in the chamber and briskly work the action back and forth . You'll see the black goo pouring out .
I do not take the rifle apart at all and can be done off the tailgate of my truck

This will help save the possibility of stripping or losing any of the many screws.
Brush and patch the bore
A few drops of oil then a good rinse of varsol again
Takes about 15 minutes.
Then wipe off any excess and set aside for abit to dry. The oil never really gets rinsed out but leaves a very , very thin coat of lube throughout the action.These rifles do not need much for lube at all to operate safely and effectively . Too much lube and it will create the thick black guck which will affect the operation
Sooner or later , I'll need to strip them down but not anywhere near as often.
