Author Topic: cantileiver mounts  (Read 2690 times)

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Offline bucksnort06

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cantileiver mounts
« on: December 01, 2010, 03:38:02 AM »
I was wondering what you guys thought about cantileiver barrel mounts.. I have one on my beretta and I can actually push down on the scope and move it slightly.. gun shoots great but it kinda bugs me a bit.. anyone ever try removing the mount from the barrel and having the receiver drilled and tapped? I will never swap barrels so having the mount on the receiver seems ideal to me..any thoughts? Thanks!

Offline gcrank1

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Re: cantileiver mounts
« Reply #1 on: December 01, 2010, 04:56:20 AM »
Im not familar with your specific mount, but I dont like wobbly/flexxy parts on my guns; stuff like that tends to fail over time IME.
Can you drill and tap the mount in the area forward, where it pushes down, and put in a screw that will just touch? there are some 'nylon' screws available at the hardware store in common threads, maybe #10 would be good.
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Offline Lon371

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Re: cantileiver mounts
« Reply #2 on: December 01, 2010, 11:35:15 AM »
 Funny you posted this topic. My boy has a Mossy 20ga with a cantiteiver mount. When we were trying to get it lined, I noticed the movement of which you speak.
We put a load of slugs thru it and it appears it is not an issue. However the idea of drilling and installing some sort of a bump stop screw would calm it.
 Good idea Gcrank1!

 On the other hand. If it were to become an issue, I think you could do like you suggest. Remove the mount, have the reciever drilled and tapped. That would depend on the make up of the gun and internals.

Lonny

Offline chefjeff

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Re: cantileiver mounts
« Reply #3 on: December 01, 2010, 11:58:21 AM »
The C-lever is the only way to go unless you have a pinned or screwed in barrel.Any play between the scope and the barrel,you might as well be shooting open sights.

Offline bucksnort06

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Re: cantileiver mounts
« Reply #4 on: December 01, 2010, 01:16:00 PM »
The C-lever is the only way to go unless you have a pinned or screwed in barrel.Any play between the scope and the barrel,you might as well be shooting open sights.
What's the "c-lever"? Thanks

Offline blind ear

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Re: cantileiver mounts
« Reply #5 on: December 01, 2010, 05:20:04 PM »
C-lever, cantilever. yep, mounting the scope to the reciever of a gun where the reciever floats separate from the barrel is just about not zeroable most of the time. Nylon 66 remingtons were an old example of this. use the open sights and they were great, scope = frustration. eddiegjr
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Offline gaileyr

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Re: cantileiver mounts
« Reply #6 on: January 07, 2011, 11:03:49 AM »
blind ear,  You hit the nail right on the head. When I bought my used Ithaca 37 it had been drilled and tapped for a scope mount. So... I figured what the heck, I'll mount a scope.  I bet shoot up 5 or 6 boxes of slugs trying zero that rig before giving and going back to open sights mounted on the barrel.

Offline wink_man

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Re: cantileiver mounts
« Reply #7 on: February 03, 2011, 12:43:27 PM »
I was wondering what you guys thought about cantileiver barrel mounts.. I have one on my beretta and I can actually push down on the scope and move it slightly.. gun shoots great but it kinda bugs me a bit.. anyone ever try removing the mount from the barrel and having the receiver drilled and tapped? I will never swap barrels so having the mount on the receiver seems ideal to me..any thoughts? Thanks!

I had the same issue with the 2 slug guns we have cantilever mounts on, and while it's really not an issue, as the cantilever is somewhat 'springy', if you will for the lack of a better term, I didn't like the gap between it and the receiver. What I did was cut and fit a small flat bushing from a nylon cutting board to the bottom of the cantilever so it can't be pushed against the receiver. I cut it, sanded it for a precise fit and crazy glued it to the bottom of the cantilever. It doesn't make the cantilever mount any stronger, but it does prevent it from being able to be pushed down against the receiver. It also doesn't change the fact that a cantilever isn't the strongest mount in the world, and because it is springy, it can be bent, either sideways or upwards, so you need to tend to treat a cantilever mount somewhat gently in my opinion. I took take a few pics, hopefully it will give you a good idea of what I did:





And now I have to respectfully disagree with all the negativity in a few posts here about a scope being mounted on the receiver of a slug gun. I've been playing with slug guns since the early 60's, and can go back to when Hastings introduced the first rifled barrel, and sabot slugs weren't even thought of yet, let alone a cantilever mount on a slug barrel.

Hastings advertisements back on those days, claimed you could increase accuracy 350% with the addition of a rigidly mounted scope on your slug gun, and using Winchester foster slugs. And guess what? The only way you were going to do that was to drill and tap the receiver. And what they were really saying was that if you mounted a scope to your slug gun properly, you really didn't need their rifled barrel.

If your barrel is a sloppy fit, then you have a problem that you can't blame a receiver mounted scope for, either pin the barrel or get rid of it and get a gun with a tighter fitting barrel/receiver. In my experience, if you have the proper fit of barrel to receiver, pinning isn't necessary for the degree of accuracy you need.

I have a Remington 870 smoothbore slug gun that I bought brand new in the mid 70's and the first thing I did to it was drill and tap the receiver and mount a scope. Still have the gun and to this day, I have never had to readjust the scope after removing and replacing the barrel.

Winchester has produced a LOAD of 1300 pump slug guns with drilled and tapped receivers(I know, me and the kids own 3 of em), I have never heard of an issue of a 1300 not being able to hold zero. 2 of our 1300's we have both a smoothbore and rifled barrels for, along with separate scopes mounted in weaver style rings, we swap scopes and barrels all the time, never had a problem holding zero, so much so that we don't even need to check anymore. After all, Weavers were the first of the 'quick remove and return to zero' rings and bases.

Also have several slug guns that we utilize the weaver 'converta mount' on. Thats the saddle mount that mounts to the side of the receiver with a flat base and the saddle/scope screws onto the base with the 2 thumbscrews. Another excellent mount for a multi purpose shotgun that holds zero no problem.

As I said, we've done this enough that we don't even have to check zero anymore when taking barrels/scopes off and on our slugguns, we've proven it out over the years from rigorous testing that they do hold zero.

Unless we hunt in an area where we are assurred of getting a shot in excess of 100 yards we tend to take a smoothbore slug barrel and foster slugs, which means in reality, that 95% of the time, we're using a slug gun that has a scope mounted to the receiver.

As an example, number one son has my first shotgun, an Ithaca 37 12 gauge, 1963 vintage. He has a 28 inch vent rib barrel, a hastings rifled cantilever barrel(shown in above pics), and a smoothmore slug barrel with a weaver converta mount on the side of the receiver. He shoots a limit of pheasants on a Saturday with the bird barrel, and on Sunday night, mounts the smoothbore slug barrel and Weaver converta mount with Bushnell Banner 1.5X4.5 variable. He goes out Monday and shoots a doe at 128 lasered yards, yes lasered, he's not guessing, one shot bang flop. We also practice at that range, it's certainly not cost prohibitive with smoothbore barrels and foster slugs.

Don't tell me a properly adjusted and tuned slug gun with a scope mounted on the receiver won't hold zero, because it just taint so.
Garry
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Offline eye shot

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Re: cantileiver mounts
« Reply #8 on: February 03, 2011, 04:13:23 PM »
wink man
 My very old Hastings barrel for my 1100 has the mounts on the barrel to use a EER or handgun scope. It's rock solid and the most accurate slug barrel I have used. It fits very tight so I never pinned it. That was there scope barrel befor the cantilever.
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Offline wink_man

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Re: cantileiver mounts
« Reply #9 on: February 03, 2011, 05:35:26 PM »
Eye Shot,
     Always a pleasure to see you. I am familiar with your gun and the scope mounts on your barrel, and it is a good and rock solid setup and definitely the predecessor to cantilever mounts. However, preceding your mount, when Hastings first came out with their rifled barrel, it was simply a rifled barrel with iron sights, so if you wanted to mount a scope, you drilled & tapped the receiver of the gun. Again, this was at a time when sabot slugs weren't even thought of yet, and Hastings advertised the Winchester foster slug as being the most accurate in their barrels. I guess that lays to rest the rumor that foster slugs will lead up a rifled barrel and ruin accuracy, LOL, no more than they'll lead up a smoothbore slug barrel.

     Believe it or not, the Ithaca 37 smoothbore slug barrels from way back in the 60's had dovetails machined into the platform of the rear rifled sight on their barrels and you could mount an EER scope on it with the right rings.

     Either way, I stand by my point that there are no accuracy issues with mounting a scope on the receiver, provided you have the barrel fitting properly to the receiver. If it's loose, or sloppy, or worn out, thats not the fault of a receiver mounted scope, as I said previously. Like you, I have never found the need to pin a barrel, and we have more than a few slug guns in the house, LOL.

     I've played with slug guns since the early 60's, iron sights, scopes mounted on the receiver, on a cantilever, on a weaver converta mount, etc. It never ceases to amaze me that people think it's near impossible to take a deer past 50 yards with a smoothbore slug barrel and a foster slug, but again, we practice regularly at ranges just exceeding 100 yards, and we don't see it as an issue at all. No sense to me taking a rifled barreled slug gun and sabot slugs out unless you're going to be assurred of a shot well beyond 100 yards. Maybe the difference is I grew up in a shotgun only state, and I had to make a shotgun act more like a rifle, I dunno.


     I'm pretty much convinced, especially after asking many detailed questions over the years, that people who badmouth slugs and slug guns in general, tend to have a grand total of experience shooting slug guns that boils down to buying one 5 pack of slugs and attempting to shoot them into a target at 50 yards using a bird barrel with a single front bead as the sight.
Garry
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Offline eye shot

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Re: cantileiver mounts
« Reply #10 on: February 04, 2011, 07:03:40 AM »
   wink_man
My 870 has a 20" Hastings with a cantilever mount and even though it has clover leafed at 100 I'm going to take the catilever off and have the reciever drilled & tapped. I did epoxyed the barrel to the reciever to see how that worked, but can't tell any difference. I can tell you have shot alot of slugs and know what your talking about unlike some that shoot one or two boxes a year.
RIP Mike. Died on July 14th, around 2am, with his family at his side, he went peacefully to be with god.

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