Thanks to all who answered my post. I appreciate your input and have decided to first try to vary the loads of my 11 gauge TVM smoothbore in order to raise the POI of my shot pattern. I also have a 20 gauge smoothbore and it shoots where I aim/point. My effort with the 11 gauge is to get it to do the same with the same sight picture for both smoothbores so that I don't have to remember to aim/point higher or lower depending on the firearm I'm shooting, but just shoulder the smoothbore and align the front sight the same for both. If this doesn't do it, then I'll probably file a little of the bottom of the crown of the barrel, then shoot a few shots, in order raise the POI. Again, thanks for you help. Tom
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Smoothbore shoot low
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When you guys file your muzzle, if you want the POI to come up, you file the bottom? Have I got that right?
Now, on filing -
I've a bit of a lead / crown on my muzzle. Would I need to file past the crow's edge to move the POI? what happens if I re-crown for a lead, do I loose what I've gained? :hmm:
I must be missing something here somewheres. :redface:
Now, on filing -
I've a bit of a lead / crown on my muzzle. Would I need to file past the crow's edge to move the POI? what happens if I re-crown for a lead, do I loose what I've gained? :hmm:
I must be missing something here somewheres. :redface:
paulvallandigham
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If you file off once side of the muzzle crown, the muzzle will now be " crooked" to the bore. You crown the barrel " crooked " too, rather than square to the bore.
When I did mine I left it as filed apart from polishing the file marks out and removing any burring. It loads just fine.Crowning it should be fine as long as the cut is of equal width of the whole new circumfrence, in fact I believe that was the fault of my early made Pedersoli in the first place. You could clearly see how they had used a countersink type tool badly and made an uneven crown. As it happens I have just checked it over as It has not made smoke for a while and after just looking at the muzzles I can hardly tell it has been done :wink:
Hmmm,
How much material are we talking (roughly) to bring POA up 4"?
Why not just work one side of the crown? Wouldn't it have the same effect? Thinking a round stone or hand hone here.
Interesting idea as I have benn considering bending too.
How much material are we talking (roughly) to bring POA up 4"?
Why not just work one side of the crown? Wouldn't it have the same effect? Thinking a round stone or hand hone here.
Interesting idea as I have benn considering bending too.
paulvallandigham
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Most shotgun barrels are very thin at the muzzle, and don't have much of a crown, per se. If you happen to be shooting a shotgun barrel that is thick at the muzzle, like an octagon barreled rifle, then by all means, work on the crown. The crown is probably out of round to begin with, and may be the reason for the POI being off by 4 inches.
Where there is a crown, always check it first before do any further work. If the crown is square to the bore, than check to see that the muzzle is also square to the bore. Only when both are square to the bore do you then go on to consider either bending the barrel, or filing on the muzzle. It should not take much metal removal to move that POI only 4 inches. I know a lot of shooters who would bother messing with the gun if the pattern is only 4 inches of. Of course, we are talking about shooting bird shot, and not a PRB.
Where there is a crown, always check it first before do any further work. If the crown is square to the bore, than check to see that the muzzle is also square to the bore. Only when both are square to the bore do you then go on to consider either bending the barrel, or filing on the muzzle. It should not take much metal removal to move that POI only 4 inches. I know a lot of shooters who would bother messing with the gun if the pattern is only 4 inches of. Of course, we are talking about shooting bird shot, and not a PRB.
I would say in my case no more than 25thou. It was only a few strokes on each tube. One tube was patterning low so a few strokes to the bottom and that was it. The left tube was shooting left and a few strokes on the left side sorted it out too.
I totally disagree that bending the barrel/s is easier. It took me less than one hour in the field,file in bag/pattern paper folded up in my coat. I went shooting squirrel after, I would like to see someone via bending be as quick.
The old way to regulate a shotgun after soldering was and still is via the crowning being filed, it is clearly visable on my Greener.
I agree that with a much thicker barrel it may seem wierd but the principle would still be the same.If bending truelly is The answer how do they suggest us double barrel users do it then?
I have never heard of modern rifles being bent to correct a flaw but I have heard of many a rifle having re-crown work!
No sorry folks bending to me is treating the sympton instead of treating the cause :hatsoff:
I totally disagree that bending the barrel/s is easier. It took me less than one hour in the field,file in bag/pattern paper folded up in my coat. I went shooting squirrel after, I would like to see someone via bending be as quick.
The old way to regulate a shotgun after soldering was and still is via the crowning being filed, it is clearly visable on my Greener.
I agree that with a much thicker barrel it may seem wierd but the principle would still be the same.If bending truelly is The answer how do they suggest us double barrel users do it then?
I have never heard of modern rifles being bent to correct a flaw but I have heard of many a rifle having re-crown work!
No sorry folks bending to me is treating the sympton instead of treating the cause :hatsoff:
The first choice should be raising your eye along the cheek piece. Only if you can't find a solid and consistent spot to rest your cheek should you consider bending your barrel. It too is a very effective method. I personally like seeing a bit more of the barrel. That seems to help get on the birds better.
I agree Grenadier, when I'm making a shotgun fit me I make it almost so I can not see any barrel. The reason for this is that when in the field I don't actually nestle down to the amount I do when trying the gun at home. :thumbsup:
