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I just "proofed" a load a few minutes ago before it got too dark to see the sights, using SL-61 that's in one of my sizers, put six into an inch on centers at 25 yards and made a ragged hole at 15 just resting my arms across my shooting bag. Shot a cylinder full offhand at my swingers at scattered ranges and hit all but the one I jerked at, so I'm pretty much good to go if I end up on my backside with an angry sow comin' at me! The Marlin will put any and all of the current iterations of this lube into a coke can at 100 yards, so I'm not worried too much about that one for a field load built with a softer alloy and a little more neck clearance and about a quarter inch jump to the lands. It's just piggies.
Gear
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Good luck, hope the piggies are playing fair.
Made a few more iterations of SL61. Hope to test this weekend. So far all are good, just not great. Yet.
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It's been so long since lithium stearate was discussed that I forgot where I got my sample. Who's the chemist here? I had a business card but can't seem to find it now. I think the chemist was in Kallie.
I know, I'm crazy for wanting to make my own lithium grease but I want to see what a grease made from Stihl B&C oil looks like.
MJ
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yeah email me again and i can send some more think i have a 1/2 lb in the lab
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1 Attachment(s)
Tried the recipe with ATF and polybutene today. Ir shot better than the one without those two ingredients.
Temp was 30 to 35 degrees and it was a bit breezy. I was cold enough.
The polybutene/ATF batch did not show a tendency towards first shot, cold barrel flyers. I was quite pleased by that.
Attachment 64389
The shots marked 4-1 and 4-2 are the fourth shot of each string. I seem to have follow thru issues after a few good shots. I suppose it would help if I shot from a bench more often?
First shot from each string is in the main group. Range was 100 yards. Load is a 375 H&H with 28 gr 2400, dacron fill, and a Lyman 375449 sized to .379. Alloy is pretty hard, tests at 22 to 24 BHn on my Cabin Tree. Harder than I normally use but it cast so nice.
This batch is going to get more testing, it seems to shoot pretty well. I also want to see how it flows thru my Star and how it handles higher temps and longer strings that heat the barrel more.
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gonna have to watch those flyers for a pattern.
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Yeah, I know. Sometimes I get a good sight picture and "relax" as I pull the trigger. I had that issue sometimes when shooting service rifle competition. I basically start to pull away from the sights before the shot breaks. It tends to give a consistent flyer pattern.
The other target of 2 five shot groups had no low flyers. Weird.
I think some better weather will help. Shivering doesn't help groups. A 12 to 15 mph crosswind doesn't help either. Not to mention cold friggin fingers.
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Yup, I have a stack of two-group targets with the same POA and 10-30% of the holes in the second group. Only way to note a trend is keep plugging and observing. The final edition of Longhorn lube took over ten shots in each string to note a flyer pattern, but it was there. Too much lube in the lube, or something not getting purged completely each shot. One thing I have yet to see with this stuff at the temps I've tested is any buildup in the barrel to cause a mid-string flyer. That predictable low shot after a short break was the buggar, though. I think Brad's got that one well on it's way to solved through with the proper balance of oils, and the same formula should work well in the heat, too.
BTW, the "beta" version and original SL-61 were tested in the field today on critters in real field conditions, we were both amazed at the lack of smoke and lube residue on anything. It was starting to get pretty warm, too, up to 90 according to the weatherman and in the hot sun to boot. I'm liking this lube base more and more every time I sling some downrange.
Gear
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After 65 rounds with no cleaning the muzzle on my rifle has hardly any lube on it.
I also like the way it doesn't leave a residue on the case neck. I have used some lines that left a residue that was difficult to remove without solvents.
With as little residue as there is I don't think purge flyers are going to be an issue.
Now if it would just get above 40 I could get in more shooting. That will be 2 weeks or more, or so says the weather man.
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I've never suggested anything called "Gear Goo", so your pics do need some explanation.
I'd also like to see four, ten-shot groups split between two different sessions without cleaning in between, and a start from a barrel at least cleaned with mild solvent like Hoppe's before testing the new lube. It often takes three or four shots to clear out the residuals from previous lube "seasoning" if you don't clean it out first, and accumulating some real data based on first, cold shots, cool barrel shots, and how the shots trend can tell you what needs adjusted.
Chronograph figures from previous and currently tested lube with identical loads are also useful to determine if fine-tuning of the load is needed, these soap lubes I've been testing change things enough to throw off a good load slightly.
So, after a proper test, where first shot POI can be noted and trends established, it WILL be self-explanatory and a tweak of the oils will fix it.
Gear
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You do as you say, post some targets, first; and then presume to tell me what I should do. Thank you for your interest.
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I'm lost here in the mountains of posts. Not following it weekly cost something.
Anyway, is the general trend here that the assembly goo stuff worked just fine up to 120° F and we're hoping for final proof on cold-weather first shots and no other flyers below 30°F before winter leaves? Are we going to have to recruit someone in Alaska for this final testing???
And I can't make the search function work like Google OR like Lexis-Nexis (the BEST, with proximity and sentence and paragraph connectors...), so I can't find the last-proven recipes without clicking forever. A little help here?
AND...I though paraffins and micro-waxes were out for goofy performance and beeswax was almost assured a place "at the table"...but now maybe not??? It's hard to get my head spinning, but y'all done it!
If there's a way to make the search work better, I'd love to hear it.
TX!
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Grump, go to page 87 for a complete recipe: http://castboolits.gunloads.com/show...=1#post2092166
I have it book marked so that I can refer back to it.
EW
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That recipe has proven to throw the first shot from an ambient-temperature barrel out of the group, almost universally LOW. We're working to fix this by adjusting the oils. There's too much castor in my first iteration, which was trying to match another proven but difficult-to-duplicate formula that used nearly the same amount. Some of us have altered the oil content and types from the version Edubya referenced and eliminated the flyer. The highest temperature anyone has shot this at targets is mid-sixties F., but that's about to change.
Gear
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Mid 60s? I would settle for 45, I am set for more cold barrel testing.
I hope to get out Friday. May run 4 cold barrel groups thru the fouled barrel to see if it is consistant after 5 days of sitting.
Then run 2 10 shot groups to see if it shows lube purge flyers, something I really don't expect.
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Haven't seen purging with any of the SL-61 or its modified versions, only with some other lubes, sorry if I was fuzzy on that one. The first "shootable" version of Longhorn lube that I tried would print two separate groups in any rifle I tried it in, and the first shot was usually right in the middle of the "main" group. the "purge" group was small as well. Lots of lubes do this if they're too slick. We're dealing with a change in bore condition after slight barrel cooling with the SL-61, but the strings seem to be holding together fine, especially with the modifed versions.
We DO have one confirmed kill with witness from a member here on a water snake at 25 yards with temps near 90, not that that counts for anything other than a dead snake. 311041 going about 2100 fps seemed to be a bit much, though. Need to get it on paper when the heat really gets going.
Gear
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Any photos of the first kill with SL61?
I would kill for high temps these days. Each week spring seems to get pushed back some.
I am debating making another batch without the polybutene but with ATF, castor, and 2 stroke. That wpuld let me see of polybutene is adding anything beneficial or not. That version does have a nice tack to it and it does leave a nice thin film on the fingers. Hand lubes like nothing else.
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I'll have to make up some MML to test against Glenns CRED. I've shot CRED at near zero temps in a couple rifles, 10 shot groups were very close to those shot in same rifles at 70 deg, never noticed any first shot fliers but these are mild loads(1650 in 7.65 and 1900 in 8mm)