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Less dense Swiss powder lots ??? (Read 2042 times)

CW Oldtimer Offline Posts: 531 Joined: Feb 20^th, 2018	Less dense Swiss powder lots ??? Mar 19^th, 2019 at 9:08pm	Print Post
	So, what is up with some of these lots of Swiss? Fluffy powder that throws flyers? Have any of you had trouble?


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Bent_Ramrod Frequent Elocutionist Offline Posts: 1582 Location: Southern Arizona Joined: Feb 8^th, 2006	Re: Less dense Swiss powder lots ??? Reply #1 - Mar 20^th, 2019 at 12:58am	Print Post
	I used to be able to get 80 gr of 1f Swiss and a 1/16” cork wad into a resized .45-70 case. The same weight of my latest lot of 1f overflows even a fired case; no space whatsoever for a wad. I haven’t done so well in Silhouette since starting on this new lot, but it may be that my shooting is in a slump. Did badly at the Boulder Gong Shoot but pretty well at the abbreviated Quigley Shoot with this lot of powder last year. So I don’t know whether the “flyers” are the powder or me. I guess I’ll try the new lot off the bench in reduced charges at the former volume so the stuff isn’t compressed to the extent it is when I cram the old load of 80 gr in the case. Have you tried adjusting the load for the new stuff? My grease groove loads use Olde Eynsford; it’s only my paper patch loads in .45-70 that need the Swiss.


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Mick B Frequent Elocutionist Offline Posts: 1007 Location: 19 Ian Nicol St watson ACT aus Joined: Apr 11^th, 2013	Re: Less dense Swiss powder lots ??? Reply #2 - Mar 20^th, 2019 at 1:34am	Print Post
	I guess you could try finer grades of Swiss, ie, 1.5, 2f. 3f . I remember reading somewhere that Goex likes a bit of compression but Swiss not so much. Mike.


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Hiwall55 Senior Forum Member Offline Posts: 468 Location: west central Illinois Joined: Jun 30^th, 2012	Re: Less dense Swiss powder lots ??? Reply #3 - Mar 20^th, 2019 at 5:44am	Print Post
	My new case of Old E is way off what it has been. 2.5 grains lighter on 38, 3 grains on 40 and 4.5 on 45/90. I been trying it in a couple of rifles in 45/90 and not finding the accuracy that I'm used to.


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John Boy Ex Member	Re: Less dense Swiss powder lots ??? Reply #4 - Mar 20^th, 2019 at 8:48am	Print Post
	HiWall - sounds like Goex fiddled with the grain ratios for their grades of powder. The 1st lot of Olde E' was juiced up. Swiss ratios are Industry Standard - Ole E' are not ... Swiss 1.5 (250.205) 12 mesh – 0.27% retained 14 mesh – 5.24% retained 20 mesh - 92.59% retained 30 mesh - 0.10% retained Through - 0.72% Olde E' 1.5Fg: 20 mesh - 98.163% Hold 30 mesh - 0.612% Hold 40 mesh - 0.000% 50 mesh - 1.224% Hold 60 mesh - Trace 80 mesh - Trace Passed Swiss FFg (250.504) 20 mesh - 76.16% retained 30 mesh - 23.50% retained Through - 0.34% Olde E FFg: 20 mesh - 62.81% Hold 30 mesh - 32.32% Hold 40 mesh - 04.27% Hold 50 mesh - 00.60% Hold 60 mesh - Trace Swiss FFFg (270.409 20 mesh - Trace 30 mesh - 87.2% Hold 40 mesh - 12.8% Hold 50 mesh - Trace Olde E FFFg: 10 mesh - Zero 20 mesh - 8.07% Hold 30 mesh - 44.72% Hold 40 mesh - 32.29% Hold 50 mesh - 13.66% Hold 60 mesh - 1.24% Hold 80 mesh - Trace passed


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gunlaker Frequent Elocutionist Online Posts: 2601 Location: lower mainland, B.C. Joined: Dec 13^th, 2010	Re: Less dense Swiss powder lots ??? Reply #5 - Mar 20^th, 2019 at 9:54am	Print Post
	Interesting that you say that John Boy. My best shooting lot of OE 1.5 was the first case I bought. The most recent case, and most likely the last I'll ever buy, is very different. I haven't found a good shooting load with it at all in any grease groove bullet load. It does shoot ok in one of my paper patch loads. It also meters inconsistenty in my MVA measure. Velocity is significantly lower too. To the original poster... My most recent lot of Swiss is definitely a little less dense, but it still shoots quite well. I used to be able to fit 82-83gr of Swiss 1.5 in my .45-70 cases, with the new lot it's more like 80gr. Chris.


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hepburnman Senior Forum Member Offline Posts: 402 Location: NJ Joined: Mar 22^nd, 2015	Re: Less dense Swiss powder lots ??? Reply #6 - Mar 20^th, 2019 at 11:44am	Print Post
	I have also seen that newer lots of Swiss are less dense. I still though weigh out the same weight charges. Fills up the case a bit more and perhaps I am also getting more compression but I haven't noticed an accuracy change. I am using 70 gr of 1.5 Fg that comes up to about 3/16" from the case mouth and i'm compressing by almost 0.3". Maybe with heavily compressed charges this change in density doesn't matter much?


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