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alloy mix for 40-65 (Read 4153 times)

Mick B Frequent Elocutionist Offline Posts: 1007 Location: 19 Ian Nicol St watson ACT aus Joined: Apr 11^th, 2013	alloy mix for 40-65 Jan 23^rd, 2022 at 10:17pm	Print Post
	Interested in hearing the the pros & cons regarding 16-1 bullets compared to 20-1 alloy bullets in a 40-65 using BP. Mike.


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art_ruggiero Frequent Elocutionist Offline Posts: 1222 Location: CT Joined: Dec 14^th, 2008	Re: alloy mix for 40-65 Reply #1 - Jan 24^th, 2022 at 7:17am	Print Post
	with grease grove bullets 20 or 25 is fine save the tin i use 25/1 art


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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: alloy mix for 40-65 Reply #2 - Jan 24^th, 2022 at 7:30am	Print Post
	Art, I have been using 22-1 recently instead of my usual 20-1 mix and could detect no difference, just thought I would give 16-1 a go as an experiment. I was expecting the bullets to come out of the mould slightly bigger and possibly be a better fit in my barrel. We shall see, it will be easy to get the mix back to 20-1 if 16-1 offers no benefit. Mike.


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SSShooter Frequent Elocutionist Offline Posts: 2943 Location: Southern NJ Joined: Aug 1^st, 2010	Re: alloy mix for 40-65 Reply #3 - Jan 24^th, 2022 at 8:22am	Print Post
	Likely no advantage to the harder alloy if not shooting above 1300fps. With some of 'hot' PP loads folks are shooting these days with their long/skinny bullets there is likely an advantage with reduced leading, nose-slump, etc. Someone developing his 38-50 PP loads recently reported chrony results in the 1475+ range. He is using 16-1 for a reason. My hottest 40-65 loads are going about 1275 per the Labradar chrony. With 20-1 that I've used for years in the 40-65 I've not gotten any appreciable leading or other problems.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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Deadeye Bly Frequent Elocutionist Offline Posts: 1146 Location: Stephens City Joined: Feb 25^th, 2011	Re: alloy mix for 40-65 Reply #4 - Jan 24^th, 2022 at 8:37am	Print Post
	I shot 30/1 for years and switched to 25/1 after acquiring a good supply of 50/50 solder. I really see no difference with greasers. I shot some 16/1 with a money bullet in a 45/70 they did not shoot as well as my Creedmoor style bullet in 25/1.


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beltfed Frequent Elocutionist Offline Posts: 1826 Location: Central Wi Joined: Dec 20^th, 2007	Re: alloy mix for 40-65 Reply #5 - Jan 24^th, 2022 at 11:40am	Print Post
	My alloy of 9+1 COWW/Lino has worked very well in my 40-65 out to 1000yds. It is about 94.5%Pb/4.5%Sb/1%Sn Worked for my 371gr Elliptical Minigroove at 1375fps and my more recent 370 gr DDEPP bullet at 1402fps No Leading , either bullet/load beltfed/arnie PS Pb-Lead Sb-Antimony Sn-Tin


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Lead Pot Full Member Offline Posts: 154 Joined: Nov 12^th, 2012	Re: alloy mix for 40-65 Reply #6 - Jan 24^th, 2022 at 11:46am	Print Post
	Here is a visual of what different alloy will do to a .45-90 black powder load will look like shot at 1285 to 1300 fps. The 1/17 no L and the 1/18 no lead on the right is a roll of 95/5 no lead solder that is a 95% tin 5% antimony added to 17 lbs and 18 lbs of lead. The UF is unfired.


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Schuetzendave Frequent Elocutionist Offline Retired Ex-Shooter Posts: 4234 Location: St. Albert, Alberta Joined: Jan 28^th, 2005	Re: alloy mix for 40-65 Reply #7 - Jan 24^th, 2022 at 12:59pm	Print Post
	I use 20:1 (lead:tin with no antimony) in both my BP .40-65 and my smokeless .32-40 or .32 RKS rifles. I have no problems with nose slump firing spitzer bullets at 1526 fps in my .32 rifles or money bullets at 1250 fps in my .40-65. Generally BP shooters prefer to use even softer alloy.
	« Last Edit: Jan 24^th, 2022 at 1:05pm by Schuetzendave »

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Green_Frog Frequent Elocutionist Offline "It ain't easy being green" ASSRA Life #281 Posts: 4164 Location: Lynchburg, VA Joined: Apr 18^th, 2004	Re: alloy mix for 40-65 Reply #8 - Jan 24^th, 2022 at 3:41pm	Print Post
	Thirty years ago when I read the Waters and Roberts book on the single shot rifle I got the suggestion to use 25-1 pure lead to tin. That worked so well I've never been tempted to change. YMMV Froggie


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SSShooter Frequent Elocutionist Offline Posts: 2943 Location: Southern NJ Joined: Aug 1^st, 2010	Re: alloy mix for 40-65 Reply #9 - Jan 24^th, 2022 at 3:55pm	Print Post
	Interesting. Appears everything with lead in it 'bumped up'. Like Froggie, still shooting what I started with......... 20-1.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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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: alloy mix for 40-65 Reply #10 - Jan 24^th, 2022 at 6:57pm	Print Post
	There's an old saying here, "you never know, till you give it a go " It will be a simple matter to just add more lead to get the 16-1 mix back to 20-1. I then might try 25-1 and save money on tin. Mike.


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hepburnman Senior Forum Member Offline Posts: 402 Location: NJ Joined: Mar 22^nd, 2015	Re: alloy mix for 40-65 Reply #11 - Jan 25^th, 2022 at 2:03pm	Print Post
	I stopped using 25/1 alloy when my 40 cal bullets (.40-65) started to dump into the ground right before the target. I was using 70 gr of 3 Fg swiss then and figured an occasional bullet was lumping. I now use 16/1 alloy and the problem stopped.


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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: alloy mix for 40-65 Reply #12 - Jan 25^th, 2022 at 6:06pm	Print Post
	Like I said before it will be a simple matter to add more lead and bring the 16-1 mix back to 20-1. As my load is only 61 gr of powder I doubt if I'm getting much over 2000 fps. Seeing as my shooting is at 100m this is fine with me, less powder, less recoil. Mike.


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oneatatime Frequent Elocutionist Offline Posts: 4480 Location: Rocky Mountains Joined: Oct 30^th, 2011	Re: alloy mix for 40-65 Reply #13 - Jan 25^th, 2022 at 6:20pm	Print Post
	Someone can give you a better figure but I doubt that you are getting much over 1300 fps.


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texasmac Frequent Elocutionist Offline Posts: 2157 Location: Central Texas Joined: Aug 16^th, 2004	Re: alloy mix for 40-65 Reply #14 - Jan 26^th, 2022 at 11:35pm	Print Post
	I shoot a BACO 420gr "money bullet" in a Shiloh Sharps 30" barrel (twist 1:14.5) using 60.5grs of Swiss 1.5. The bullet alloy is 1:16 to ensure the bullet nose does not set back. The muzzle velocity is 1270fps. Wayne

	NRA Life (Benefactor & President's Council) Member, TSRA Life Member, NSSF Member, Author & Publisher of the Browning BPCR book
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