i have a rem 700 in 300wm.if i would rebarrel to 375 ultra how and how much would i open the rails. i am not a g smith! thanks

You hit the nail on the head when you said you are noa gunsmith. The answer to your question, "how much would I open the rais" is NOTHING. Take it to a gunsmith.

i knew that one was a comin, hee hee thanks jim , i,m really not going to do it myself, just curious how it was done.

ho,
Be patient. At some point someone will answer your question in a way that will help you

quote:

Originally posted by ho:
i have a rem 700 in 300wm.if i would rebarrel to 375 ultra how and how much would i open the rails. i am not a g smith! thanks

You wouldn't need to open the rails. You would need to swap out the mag box with one designed for the ultra mag, and I believe the follower.

As far as how much you would have to open the rails if it needed it, maybe $100 - $150.00 worth.

is the action long enuf?

quote:

Originally posted by butchloc:
is the action long enuf?

Yes.

The rails need to be opened up .015" per side to feed Ultra cases.

ho,
Westpac has done these conversions before (as per past forum threads). There are a bunch of threads on here that touch on your exact problem. Just search for "ultra conversion" and that should bring up a bunch of stuff that will help you. Numerous guys that have DONE the conversion say to not touch the rails. One gentleman did widen the feed ramp, but I don't know if it is the exception rather than the rule.