Things to consider: length of rifle, whether or not you use a moderator, scope ... check that rifle and scope will fit easily into the bag.
Floppy bag vs solid .... up to you really. Whatever, preference should be for one with handles and a (very sturdy) zip and one or two zip pockets on the side. My experience is that the zips tend to be the weal point. Personally I do not generally use a 'sling strap' to carry the bag but you may find it useful. A 'plastic box' type bag can be useful.
Beware of bags that are in reality just shotgun bags so will not take a scoped rifle.
Some bags open out to form a shooting mat. Interesting but not for me.
If you can get to see bags, do so as padding can vary.
If you have a local auction you may be able to pick up a bag or two quite cheaply.
Cheers, Phil![]()