MarineStud
Ditto - ditto -everything
skeeter 7MM said + the added protection of a more water proof system, especially in states where an open breech is required.
If the open breech isn't required and you are using a Cabelas conversion you can use a simple 20 guage shot shell plastic case as a cover then you don't need to worry about you scope. If you are using the Remington conversion you have a couple of options.
The
new Remington weather shroud is metal not fiber and will stand up forever, just needs a gas escape drilled in it. I make them out of copper tubing but now that Remington is producing metal ones I am just going to order a couple - they fit my Austin and Halleck also.
Here is a picture - the top picture shows the Remington with a home made shot gun shell weather shroud and the new Remington metal shroud (without a gas vent). The bottom picture shows the A&H with homemade copper shroud.
http://img.photobucket.com/albums/v1...r/Wshouds2.jpg
Cabels Remington conversion
http://www.cabelas.com/cabelas/en/te...results1.jhtml
Good luck - give ashout if you need any additional information...