Thread: 2 Barrels, 1 Rifle

Originally Posted by No.3

Apart from the "I did that" factor, by the time you set yourself up and get everything sorted out and get yourself into the pattern of thinking ahead about when you're hunting and when you are going to get everything organised ahead of time - it's basically just going to cost about the same as having two rifles. One in .308 and the other in 6.5...

Forgive me for being that guy, but the other issue is the potential for wear and tear in the barrel tenon threads taking barrels on and off (small risk but still) and also the stuff around removing the scope and bases every time as if you are using screw-on bases rather than clamp on usually the front base screws project into the barrel tenon area and interfere with the barrel threads. I prefer the screw-on style rather than clamp on, as I've had the clamp on type come loose and slip about.

Jeez Benchrest competitors remove and fit barrels many times and never have the problem of thread wear!!!
I've got one action and 7 barrels in different calibers and two bolts with different bolt faces and never have I had the problem of thread wear, but I do use an anti seize lubricant on the threads since it's a stainless action and the barrels are stainless, the lubricant is to prevent galling the threads.
My scope stays on the action everytime I change the barrel and a barrel vise and action wrench is certainly cheaper than a rifle or even an action.

If the scope base threads are touching the barrel tenon threads then you will most likely end up with accuracy issues.

If the barrels are chambered and fitted and have shoulder and not a barrel nut you don't need a go - nogo guage, just remove one barrel and screw the other on and tighten it up adjust the scope and go and shoot.

One thing I would highly recommend if you go ahead with this is to have the action checked to ensure the front face of the action is truely perpendicular and square to the threads and the threads are square to the bolt bore.

Originally Posted by 19Badger

Jeez Benchrest competitors remove and fit barrels many times and never have the problem of thread wear!!!
I've got one action and 7 barrels in different calibers and two bolts with different bolt faces and never have I had the problem of thread wear, but I do use an anti seize lubricant on the threads since it's a stainless action and the barrels are stainless, the lubricant is to prevent galling the threads.
My scope stays on the action everytime I change the barrel and a barrel vise and action wrench is certainly cheaper than a rifle or even an action.

If the scope base threads are touching the barrel tenon threads then you will most likely end up with accuracy issues.

If the barrels are chambered and fitted and have shoulder and not a barrel nut you don't need a go - nogo guage, just remove one barrel and screw the other on and tighten it up adjust the scope and go and shoot.

One thing I would highly recommend if you go ahead with this is to have the action checked to ensure the front face of the action is truely perpendicular and square to the threads and the threads are square to the bolt bore.

This is exactly what I was hoping to hear, thanks mate!
@gqhoon, legend thanks mate!

Originally Posted by 19Badger

Jeez Benchrest competitors remove and fit barrels many times and never have the problem of thread wear!!!
I've got one action and 7 barrels in different calibers and two bolts with different bolt faces and never have I had the problem of thread wear, but I do use an anti seize lubricant on the threads since it's a stainless action and the barrels are stainless, the lubricant is to prevent galling the threads.
My scope stays on the action everytime I change the barrel and a barrel vise and action wrench is certainly cheaper than a rifle or even an action.

If the scope base threads are touching the barrel tenon threads then you will most likely end up with accuracy issues.

If the barrels are chambered and fitted and have shoulder and not a barrel nut you don't need a go - nogo guage, just remove one barrel and screw the other on and tighten it up adjust the scope and go and shoot.

One thing I would highly recommend if you go ahead with this is to have the action checked to ensure the front face of the action is truely perpendicular and square to the threads and the threads are square to the bolt bore.

This is all true - the thread wear is a little different in the target scenario though as most target barrels go on for the life of the barrel - if a barrel comes off it's for a reason. For a switch barrel the things will likely go on and off many times more than a target setup? Thread wear is something that is a bit weird in my experience, I had an example of it the other day where one bolt came out OK but the next didn't. One part changed out in 30mins (good side), the opposite bolt on the other side 8.5hours driving the bolt in 1/2 a flat at a time over 40mm of bolt length... Painful. I couldn't get the bit off that the bolt screwed into either, prick of a design with no clearance at all around it.

The scope base screws are interesting, the number of rifles I've found where the front base screw holes are into the barrel threads - I think that the people installing the things don't tend to check the screw length vs hole depth. It should be clear of the barrel, but... If the front screw in the front base bottoms before it pulls tight on the base that can have an obvious issue, but if the rear one is too long it can touch the bolt nose and also create issues (more for 2-lug bolts).

The mating faces on the action and barrel are a definite truing requirement - if they aren't square to each other they can come up at different tensions and positions and that can change lots.