Tungsten Disulfide (WS2) Procedure Questions

[Longtrain]

I have a new Hart barrel being installed on one of my F-T/R rifles and have decided to shoot coated bullets in it.

I have ordered a bit of WS2 (Tungsten Disulfide) to coat my bullets, I have all the equipment to coat, but I have a few questions.

After coating, do you need use any type of wax to finish the bullets or just polish and shoot? If so, where do you get the wax? What's the process?

Do I need to coat the barrel with WS2 before shooting coated bullets? I have read that I need to mix isopropol alcohol and WS2 into a paste and patch it through the barrel prior to shooting, what dilution? How many passes?

After shooting, how often and how do you clean? Standard solvents & procedures, then re-coat the barrel with WS2 when done or re-coat only just before shooting?

Thanks for any insight you can give me on this process, so much out there on how to coat the bullets, but little on the day to day PM and processes.

Thanks for your time and insight.

Tony

 

[jonbearman]

I think there is an article right here on our sight about how to apply it and all the rest of your questions.

 

[bozo699]

jon ,
I think this is the site you were referring to.
http://www.6mmbr.com/bulletcoating.html
Wayne.

 

[artbosco]

I have a new Hart barrel being installed on one of my F-T/R rifles and have decided to shoot coated bullets in it.

I have a question. Why would you go to all this trouble and expense to slow up the speed of your bullet?

 

[Longtrain]

I have seen that and most other posts/articles about Moly, WS2 or HBN.

I think that this subject is like politics and religion, some love it, some hate it, and I don't think that you'll change the minds of either camp.

I'm not worried about a slight decrease of MV, I'm looking for ease of cleaning, consistent accuracy and zeros and possibly more barrel life. I'm sure that those are all debatable too, I'll see.

Too many great shooters use coated bullets, must be something there.

Thanks,

Tony

 

[ReedG]

Do think coating bullets is one of the areas of shooting where we get a chance to express ourselves. It is a dark science at best and very little corroborating data for any of the points of view. I shoot nothing but t-d coated bullets in factory and custom rifles. I figure if I can put a coating between the bullet and the barrel bullet that withstands over 750 deg. F and is slipperier than snake oil, it has a benefit to the barrel.

I know guys in point-blank BR with 30BRs with many thousands of rounds and still shooting lights out. I have a 6BR barrel that began life as a 6PPC BR tube, was taken off and rechambered and sold to me and I have put 3,657 rounds through it with no noticable drop off in accuracy though the throat is longer than before.

There is no barrel prep necessary with t-d. I cannot attest to long periods between cleanings as I can't help myself from cleaning often regardless. I use the Kroil/JB process, none of my barrels has seen a brush, and clean after every use though the number of shots can vary from 20 to over 100 depending on how much shooting I do. A patch with JBs will do anything all those chemistry experiments will do, and more. Pleny of guys are shooting entire IBS Score matches without cleaning and seem to do fine.

I can see no difference in accuracy clean or dirty. When I first started using t-d I would pass a patch with t-d on it down the barrel after cleaning, but could not see any benefit to it. Now I clean with Kroil/JBs, use two dry patches followed by a patch with just a drop of Kroil and go shoot. I don't think you will find any benefit to treating the barrel.

Accuracy is almost never about the nth degree of velocity. I don't care if my treated bullets are 38 fps slower.

 

[ReedG]

Just to quickly address the "slow down" of t-d coated bullets: the reason they are a bit slower is that the coating creates less friction and the powder burn creates less pressure. With prudent attention to detail, most calibers using t-d coated bullets can be safely loaded with an amount of powder that will easily match or exceed the velocity of uncoated bullets.

According to the experts, during the firing process a bullet jumps a few inches down the barrel, stops, the pressure builds and it jumps again, etc. (Mind you all in a few thousandths of a second.) If that is true, then in my uneducated mind it is all the more reason for t-d coated bullets.

 

[bozo699]

Longtrain,,,ReedG,
I haven't used TD yet but I have used moly with great success and wouldn't mind trying the TD. I myself thought I could see a little advantage in coating the barrel I don't know if it really did or not either way I don't believe there were any neg side effects to it. I liked your answers to why molly
Wayne.

 

[Longtrain]

ReedG:

Thank you, thank you. Just the info I was looking for using TD on a new barrel. Now one more question, my 308 has 1200 rounds down the tube, it is always well cleaned, can I switch over to TD? Any special prep beside maybe another good cleaning?

Thanks again,

Tony