DoneNOut
Well-Known Member
How effective would some Flitz be on a new factory made rifle? Maybe a 5-6 passes on a patch wrapped around a caliber sized brush?
Hand Lap Your Own Barrel?
- Thread starter DoneNOut
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If you have a factory barrel and it does not group well first check that the bore is clean, second try different loads and then if you want to try lapping because you think that there is tooling marks and want to "smooth" it out you can try "Fire Lapping" . David Tubbs makes bullets with different grit on the bullets to be used in succession.
MagnumManiac
Well-Known Member
That won't work.
Flitz will polish, not remove the rough spots, if any are present.
Lapping involves using a rod with a plug that allows molten lead to form into it without it pouring into the rest of the barrel, then once the lead slug is formed it has fine lapping paste applied and passed through the barrel until it feels smooth.
I do this, it is time consuming and exposes you to lead fumes.
The reason you don't want to polish the bore is due to friction, it will increases if you polish. Lapping leaves a dull smooth finish. And gets 99% of the step between lands and grooves…..Flitz won't touch in the corners.
Cheers.
Flitz will polish, not remove the rough spots, if any are present.
Lapping involves using a rod with a plug that allows molten lead to form into it without it pouring into the rest of the barrel, then once the lead slug is formed it has fine lapping paste applied and passed through the barrel until it feels smooth.
I do this, it is time consuming and exposes you to lead fumes.
The reason you don't want to polish the bore is due to friction, it will increases if you polish. Lapping leaves a dull smooth finish. And gets 99% of the step between lands and grooves…..Flitz won't touch in the corners.
Cheers.
cohunt
Well-Known Member
I use flitz on feed ramps
Me too.Had a Glock with feeding problems and got it cheap due to feeding issues.
Sanded the ramp to get rough spots out and polish with Flitz until it becomes a mirror.
Had to adjust the magazine feed lips also but it ran perfectly.
shortgrass
Well-Known Member
"Lead Laps" are poured in succession, 180g, 240g., 280-320g. After a barrel is chambered, it's a little late to lap. The throat will get longer, and if you are lapping in the 'traditional way', the lap doesn't leave the muzzle end so there's some bore that doesn't get 'smoothed'. The 'fire lapping' method is probably the best way after a barrel is chambered and crowned. But, go ahaead and try it for yourself, you won't be the first!
DoneNOut
Well-Known Member
Still trying to wrap my head around this....
shortgrass
Well-Known Member
The lead laps I've been around have the abrasive mixed into the molten lead and are poured right in the barrel that is to be lapped. A plug is inserted in the bore before the molten lead is poured, so it doesn't just run down the barrel, but forms a slug that is the lap. It fits the bore perfectly. The 'slug' is cast with a rod into it, so it can be pushed and pulled. It wears quickly. Wrapping a patch around a brush and applying a polishing compound may not 'lap' the entire bore. Besides, it's polishing compound and not abrasive enough to actually "lap", remove the high spots/tool marks.
I just used tub's final finish system on a Friends rifle with good results,the rifle had many rounds on it a little bit of fire cracking but the real problem was a rusty bore
Mikecr
Well-Known Member
The best lapping is not a polish. It provides a 'smooth' surface profile that just happens to be best.
If you polish a bore, you've ruined it -until properly re-lapped (hopefully recoverable).
I tested this with a good barrel once, using Flitz, just for the learning I guess.
The cut rifled barrel immediately went from no copper with 50sht clean rate, to copper fouling out by the 2nd group.
Then I tried to recover the bore with JB cleaning compound. No good. Tried Tubb's FF, even that did not work.
Ruined
If you polish a bore, you've ruined it -until properly re-lapped (hopefully recoverable).
I tested this with a good barrel once, using Flitz, just for the learning I guess.
The cut rifled barrel immediately went from no copper with 50sht clean rate, to copper fouling out by the 2nd group.
Then I tried to recover the bore with JB cleaning compound. No good. Tried Tubb's FF, even that did not work.
Ruined
Beware…..it works but if you use it too much then you will do like I did and ruin a 7mm rem mag by dulling and rounding the lands and grooves and it also polished it way too much reducing all the friction and accuracy went to crap. Beware! Trashed the barrel
DoneNOut
Well-Known Member
I'm not gonna touch any bore with Flitz! Thanks all!
xsn10s
Well-Known Member
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I used Flitz to clean bores. It didn't harm the bore or cause it raise pressures. I guess it's on how you use it.
