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single based powders and double based powders (Read 600 times)

Joe_S Frequent Elocutionist Offline Posts: 1058 Joined: Jun 29^th, 2004	single based powders and double based powders Aug 18^th, 2025 at 5:05pm	Print Post
	In a recent post, it was suggested that single based powders are better for vintage rifles than double based powders. Is that the general consensus? Does anyone have a list of which powders are single based and which are double based? I did a google search with not much luck. Thanks! Joe S


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 17113 Location: Oregon Joined: Feb 2^nd, 2009	Re: single based powders and double based powders Reply #1 - Aug 23^rd, 2025 at 11:48pm	Print Post
	I know the 4198 I use is single base, and the 5744 I wont use is double base.

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beltfed Frequent Elocutionist Offline Posts: 1795 Location: Central Wi Joined: Dec 20^th, 2007	Re: single based powders and double based powders Reply #2 - Aug 24^th, 2025 at 9:03am	Print Post
	It is noted that double base powders are more sensitive to ambient temperature swings beltfed/arnie 4227 is single based 2400 double based


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4570mike Senior Forum Member Offline Posts: 428 Location: On the Peninsula Joined: Apr 11^th, 2013	Re: single based powders and double based powders Reply #3 - Aug 24^th, 2025 at 10:40am	Print Post
	Joe_S wrote on Aug 18^th, 2025 at 5:05pm: In a recent post, it was suggested that single based powders are better for vintage rifles than double based powders. Is that the general consensus? Does anyone have a list of which powders are single based and which are double based? I did a google search with not much luck. Thanks! Joe S My 46th Edition of the Lyman Reloading Handbook ( I know, I should buy a newer one), page 185 lists many powders and identifies most as either single or double base. A newer edition will likely have more of the powders encountered today. Mike.


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 17113 Location: Oregon Joined: Feb 2^nd, 2009	Re: single based powders and double based powders Reply #4 - Aug 24^th, 2025 at 11:14am	Print Post
	4570mike wrote on Aug 24^th, 2025 at 10:40am: Joe_S wrote on Aug 18^th, 2025 at 5:05pm: In a recent post, it was suggested that single based powders are better for vintage rifles than double based powders. Is that the general consensus? Does anyone have a list of which powders are single based and which are double based? I did a google search with not much luck. Thanks! Joe S My 46th Edition of the Lyman Reloading Handbook ( I know, I should buy a newer one), page 185 lists many powders and identifies most as either single or double base. A newer edition will likely have more of the powders encountered today. Mike. My newest Lyman catalog is a #42 Mike! Most of mine are even earlier Ideal manuals. Lots of good info newer manuals don't contain.

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4570mike Senior Forum Member Offline Posts: 428 Location: On the Peninsula Joined: Apr 11^th, 2013	Re: single based powders and double based powders Reply #5 - Aug 24^th, 2025 at 12:00pm	Print Post
	marlinguy wrote on Aug 24^th, 2025 at 11:14am: 4570mike wrote on Aug 24^th, 2025 at 10:40am: [quote author=496C665C50030 link=1755551158/0#0 date=1755551158]In a recent post, it was suggested that single based powders are better for vintage rifles than double based powders. Is that the general consensus? Does anyone have a list of which powders are single based and which are double based? I did a google search with not much luck. Thanks! Joe S[/quot My 46th Edition of the Lyman Reloading Handbook ( I know, I should buy a newer one), page 185 lists many powders and identifies most as either single or double base. A newer edition will likely have more of the powders encountered today. Mike. My newest Lyman catalog is a #42 Mike! Most of mine are even earlier Ideal manuals. Lots of good info newer manuals don't contain. Most of the powders I use are "IMR Something" and the old books provide all I usually need. Mike.


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 17113 Location: Oregon Joined: Feb 2^nd, 2009	Re: single based powders and double based powders Reply #6 - Aug 24^th, 2025 at 12:12pm	Print Post
	4570mike wrote on Aug 24^th, 2025 at 12:00pm: [quote author=303C2F3134333A28245D0 link=1755551158/4#4 date=1756048442][quote author=7774272528292D2F21440 link=1755551158/3#3 date=1756046407] Most of the powders I use are "IMR Something" and the old books provide all I usually need. Mike. A lot of my newer manuals don't even show cartridges as common as .32-40 or .38-55, or other common hyphenated cartridges. So I originally searched out old Ideal manuals when they weren't collectible and sold for $5 at gun shows. So much data for cartridges we all enjoy, and it gave me a good start back 50 years ago.

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waarp8nt Participating Member Offline Posts: 28 Joined: Aug 4^th, 2024	Re: single based powders and double based powders Reply #7 - Aug 25^th, 2025 at 3:40pm	Print Post
	I had a Lyman #1 manual in my hand on Saturday with intentions of buying it. I got distracted by something shiny, set it down to look at the shiny object and forgot about the book. Didn't realize it until I had drove a half an hour. It's at the reloading store in St. Charles, MO if anyone lives in the area and wants it.


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3943 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: single based powders and double based powders Reply #8 - Aug 26^th, 2025 at 4:45pm	Print Post
	IF I'm not mistaken, single based powders are based on nitrocellulose and double based powders are that plus nitroglycerin. I would think that would affect the rate of burning and the SHAPE of the pressure curves.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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