This is my second post and I don't want to be flamed for Dis informaion but it is a concern of mine and maybe informative to others. I don't know if any of this is fact/fiction but seeing how Lilgun is a great powder for the 450 and used alot... I thought I would pass this on to get someone with more knowlege and experiance than myself.
Here is the website, along with some post from it using Lilgun in rifles and revolvers. Thanks again..!!
http://www.go2gbo.com/forums/index.php?topic=180437.0
We have seen numerous barrels damaged by using Lil Gun. According to customers, some had as few as 30 rounds using Lil Gun through them, some had several hundred. Before we figured out what was happening one customer had sent his gun in for a new barrel. Then 600 rounds later it came back for another new barrel.
A couple years ago we did a test with a M83, .357 Mag. using Hornady 180 gr. bullets. We loaded 50 rds. of three different loads. One was a heavy H-110 load and the other two both used Lil Gun in different quantities.
We fired the H-110 loads first, then cut off the threaded end of the barrel. Rethreaded the barrel and shot one of the Lil Gun loads then rethreaded the barrel and shot the last Lil Gun load.
We found even the light load of Lil Gun caused the gun to get extremely hot. The heavy Lil Gun load had the gun so hot the only place we could touch the gun was on the grips and they were very hot.
Under magnification the surface appeared to have heated to a point of flowing using the Lil Gun loads and the heavy load was worse than the light load. This is probably due to Lil Gun having about 10% more nitro glycerin in it than H-110.
BigMuddy
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Re: The Truth About Lil' Gun...
« Reply #19 on: August 22, 2009, 08:43:07 PM »
Quote from: Bob Baker on August 20, 2009, 03:45:06 PM
We have seen numerous barrels damaged by using Lil Gun. According to customers, some had as few as 30 rounds using Lil Gun through them, some had several hundred. Before we figured out what was happening one customer had sent his gun in for a new barrel. Then 600 rounds later it came back for another new barrel.
I am one of those customers Bob mentions. I can assure anyone without a doubt now that Lil Gun powder is the culprit, and the reason I need a 3rd barrel on one of my 83's. It took 3 different guns and 4 barrels to narrow it down to the powder, but powder it is.
Interestingly enough on another forum when this came up, I was told I was wrong about it because the other person had never seen anyone "Like John Taffin" mention it. Maybe Bob is someone like John Taffin.
I can't speak for it in any other caliber than 454 and no other gun but FA Model 83 because that is all I used it in. (I just like to ruin expensive guns )
Correct me if I am wrong but "burn rate" really does not have anything to do with the temperature that the powder burns, does it?
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JayCee
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Re: The Truth About Lil' Gun...
« Reply #29 on: September 01, 2009, 08:06:20 PM »
Mr. Baker's research seems to indicate that the erosive effects are most pronounced after firing a large number of rounds one right after another. He indicated that after fifty rounds, the gun was too hot to hold. If the exterior of the gun was that hot, the interior of the barrel must have been incredibly hot, to the point that the heat sink effect of the heavy barrel was virtually nonexistent. Metal subjected to additional heat at those temperatures will likely start to see some physical changes, and that appears to be borne out by Mr. Baker's observations. The culprit in Lil' Gun seems to be that it burns hotter than other comparable powders, so it heats up the barrel that much more. I'm thinking that using Lil' Gun in moderation and allowing ample time for barrel cool-down will potentially alleviate the most serious erosive effects, but I'm not an expert...