|
Joined: Aug 2006
Posts: 983
Campfire Regular
|
OP
Campfire Regular
Joined: Aug 2006
Posts: 983 |
Can moly be cleaned out of a DBC'd bore by simply using a plastic brush and Hoppes? Thanks-Muddy
|
|
|
|
Joined: Mar 2006
Posts: 14,536 Likes: 3
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2006
Posts: 14,536 Likes: 3 |
No brush needed. Some solvent or soapy water on a patch works fine. These days I just patch the copper out with 1 or 2 patches of copper solvent, and leave the moly in the bore.
|
|
|
|
Joined: Oct 2004
Posts: 2,141
Campfire Regular
|
Campfire Regular
Joined: Oct 2004
Posts: 2,141 |
if you want to continue to shoot moly just 4 or 5 patches of 50/50 shooters choices and kroil..one Patch of JB ..2 dry patches . after a few thousand rounds check for copper with Sweets.
this after 400 rounds
|
|
|
|
Joined: Jan 2001
Posts: 29,919 Likes: 10
Campfire Ranger
|
Campfire Ranger
Joined: Jan 2001
Posts: 29,919 Likes: 10 |
I use moly in units that exceed 3,000 fps. A patch wrapped brush, coated with JB paste, can have moly out in a few minutes. I've not run into a solvent that does an effortless removal.
Moly coupled with DBC seems redundant.
1Minute
|
|
|
|
Joined: Mar 2006
Posts: 14,536 Likes: 3
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2006
Posts: 14,536 Likes: 3 |
I use moly in units that exceed 3,000 fps. A patch wrapped brush, coated with JB paste, can have moly out in a few minutes. I've not run into a solvent that does an effortless removal.
Moly coupled with DBC seems redundant. Hah, see your first paragraph and then my post above if you think so No need to ever use brushes or JB in a DBC'd bore...
|
|
|
|
Joined: Mar 2002
Posts: 11,513 Likes: 1
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2002
Posts: 11,513 Likes: 1 |
I thought it was pretty well proven that moly had no value. According to Richard Vaughan in "Rifle Accuracy facts," it has no effect on accuracy or barrel life. All it does is use some of the powder energy (and pressure) to vaporize the moly in the barrel, which then condenses again. The result is lower pressure and of course lower velocity. So the handloader must add more powder to get the original pressure and velocity. Some end up adding enough more and get higher velocity but don't now they are operating at higher pressure than to begin with to do that.
Don't blame me. I voted for Trump.
Democrats would burn this country to the ground, if they could rule over the ashes.
|
|
|
|
Joined: Mar 2006
Posts: 14,536 Likes: 3
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2006
Posts: 14,536 Likes: 3 |
Reducing friction also reduces pressure, at like velocity.
|
|
|
|
Joined: Aug 2006
Posts: 983
Campfire Regular
|
OP
Campfire Regular
Joined: Aug 2006
Posts: 983 |
The reason I asked is that a friend gave me 2 boxes of .338-250 NPT moly'd and I was going to use them for practice in my 340 WM and I didn't want to have moly deposited in the bbl. over the DBC. The simple question was, can it be removed from the bbl. w/only a plastic brush, Hoppes and patches? nothing more.-Muddy
|
|
|
|
Joined: Mar 2006
Posts: 14,536 Likes: 3
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2006
Posts: 14,536 Likes: 3 |
|
|
|
|
Joined: Mar 2002
Posts: 11,513 Likes: 1
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2002
Posts: 11,513 Likes: 1 |
Reducing friction also reduces pressure, at like velocity. Your comment goes against the laws of Physics. If you reduce pressure, you reduce velocity. Look at it this way. If you don't push something as hard, it won't go as fast.
Don't blame me. I voted for Trump.
Democrats would burn this country to the ground, if they could rule over the ashes.
|
|
|
|
Joined: Jul 2011
Posts: 23,453
Campfire Ranger
|
Campfire Ranger
Joined: Jul 2011
Posts: 23,453 |
Reducing friction also reduces pressure, at like velocity. Your comment goes against the laws of Physics. If you reduce pressure, you reduce velocity. Look at it this way. If you don't push something as hard, it won't go as fast. True, but moly will allow you to add powder beyond where you would have maxed otherwise, thereby getting back up to max pressure and increasing velocity beyond the earlier parameters.
America needs to understand that our troops are not 'disposable'. Each represents a family; Fathers, Mothers, Sons, Daughters, Cousins, Uncles, Aunts... Our Citizens are our most valuable treasure; we waste far too many.
|
|
|
|
Joined: Mar 2006
Posts: 14,536 Likes: 3
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2006
Posts: 14,536 Likes: 3 |
No it doesn't. Friction robs energy, which also robs velocity at a given pressure. It's not as straight forward as pressure=velocity. There are other factors that contribute to the net effect. Look at it this way, if you push something equally as hard, but have less friction (like a lubricant or a bullet with less bearing surface), it goes faster.
|
|
|
|
Joined: Oct 2008
Posts: 7,263
Campfire Tracker
|
Campfire Tracker
Joined: Oct 2008
Posts: 7,263 |
I would skip all the hassle and remove the moly from the bullets if they are not already loaded. A strong solvent will usually take it off or a spin in the tumbler.
I would never use JB on a Dyna Bore Coated barrel unless I was getting ready to re-treat it. Don't know as I avoid moly but I would think the barrel would take much more prep after moly before you could re-coat with DBC.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
|
|
|
|
Joined: May 2003
Posts: 16,971 Likes: 1
Campfire Ranger
|
Campfire Ranger
Joined: May 2003
Posts: 16,971 Likes: 1 |
the only thing MOLY might do that I would consider it for is eliminate or reduce the cold weld between the bullet and the brass.
That being said - no one has answered the - does MOLY in a Bore Coated barrel clean out a lot easier question...
|
|
|
|
Joined: Mar 2006
Posts: 14,536 Likes: 3
Campfire Outfitter
|
Campfire Outfitter
Joined: Mar 2006
Posts: 14,536 Likes: 3 |
I already said that it did...
|
|
|
|
Joined: Feb 2001
Posts: 50,645 Likes: 1
Campfire Kahuna
|
Campfire Kahuna
Joined: Feb 2001
Posts: 50,645 Likes: 1 |
No it doesn't. Friction robs energy, which also robs velocity at a given pressure. It's not as straight forward as pressure=velocity. There are other factors that contribute to the net effect. Look at it this way, if you push something equally as hard, but have less friction (like a lubricant or a bullet with less bearing surface), it goes faster. The part of the explanation being left out is the fact it is not a single moment that determines velocity, but a complex equation written over a fairly long period of time with several different things going on. Look to free-bore effect as an example.
Mark Begich, Joaquin Jackson, and Heller resistance... Three huge reasons to worry about the NRA.
|
|
|
|
Joined: Jan 2001
Posts: 29,919 Likes: 10
Campfire Ranger
|
Campfire Ranger
Joined: Jan 2001
Posts: 29,919 Likes: 10 |
On the velocity deal. I've mollied three rifles. Each took about a 5% hit in velocity that I regained with a grain or two of powder. My initial reason for doing moly was copper fouling in a 257 Weatherby. It solved the issue.
1Minute
|
|
|
|
614 members (1OntarioJim, 160user, 10gaugeman, 16gage, 10ring1, 60 invisible),
2,458
guests, and
1,272
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums81
Topics1,193,059
Posts18,501,193
Members73,987
|
Most Online11,491 Jul 7th, 2023
|
|
|
|