ASSRA Forum - Alloy Hardness & Smaller Groups

ASSRA Forum › General › Reloading the Single Shot Rifle › Alloy Hardness & Smaller Groups

(Moderator Group: Moderator)

‹ Previous Topic | Next Topic ›

Pages: 1 2 [3]

Send Topic

Alloy Hardness & Smaller Groups (Read 14893 times)

frnkeore Frequent Elocutionist Offline Posts: 7658 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Alloy Hardness & Smaller Groups Reply #30 - Oct 17^th, 2011 at 8:39pm	Print Post
	I've shot with range scrap (bought from the ranges pistol back stop already cast into ingots) and 2% tin in WW's. I got relatively good groups with both in my 45/70. I had no leading issues with either. I used it in the 45/70 because you go through a lot of lead at 430 - 490 gr. At my shooting was BSed. I shot my best 45/70 group (.60 @ 100)with 20/1 but, I used that so that I knew I would have the best bullet possible and not for any other reason. All shooting was done with Darr lube at that time. Frank

	ASSRA Member #696, ISSA Member #339
	YIM AIM IP Logged

40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: Alloy Hardness & Smaller Groups Reply #31 - Oct 18^th, 2011 at 8:38am	Print Post
	John I don't take your observations as argumentative quite to the contrary I have been using harder bullets after seeing your results, I am now up to 18:1. My objection was to antimony not to hardness. The trick is to come to a place where the bullet is sufficiently and constantly hard. Consistency being the operative word. Charlie Dell wrote extensively about heat treating bullets to obtain a consistent hardness. He used a 1% 1% 98% alloy and heat treated. He could bring the bullets to a consistent Linotype hardness using very little antimony there by maintaining ductility. The fly got in the ointment as the bullets age, Lead tin gets softer with age while alloys that use antimony get harder and more brittle with age. He also found that the bullets changed from the outside in. He found that the bullets changed significantly over the first month and then seemed to slow down after that. He told me that he had gone back to lead / tin alloys because no matter what he did he could not stop age changing the hardness. He went back to the lead tin, he said, because the lead / tin / antimony got too hard to be accurate but if he he used an alloy of lead / tin harder than what he wanted and aged them for about a month they then stayed shootable and changed little after that. Admittedly we came to similar conclusions for different reasons, but Charlies experiments are something to consider. 40 Rod


	IP Logged

JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: Alloy Hardness & Smaller Groups Reply #32 - Oct 18^th, 2011 at 1:16pm	Print Post
	40 Rod have you noticed a significant improvement with the 1-18 alloy and what alloy were you using prior to your change. I agree with your statement about the bullets getting harder as they age my problem is I can't cast them fast enough to keep up with my current testing so they don't tend to set around for very long. I refer to Charlie's Book just about on a weekly basis it is one of the best investments I have made and I have currently been re-reading his findings on bullet hardness and paying close attention to his statement that he never had consistent results with a BHN softer than 8. He shows 1-19 to be 8.2 and 1-15 to be 9.3 so your 1-18 should get you real close to his BHN of 8. Prior to my going harder than what a lead and tin alloy could provide I found 1-16 performed exceptionally well as did 1-10 but I must say the tin required for that last one was very hard on my pocket book and at the current price and the loss of my job I simply can't afford it. I had 50lbs of Hardball l purchased a couple of years back lying around and that is what prompted my current testing of using it with pure lead. J.Louis
	« Last Edit: Oct 18^th, 2011 at 7:14pm by JLouis »
	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
	IP Logged

40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: Alloy Hardness & Smaller Groups Reply #33 - Oct 19^th, 2011 at 9:28am	Print Post
	John I started out at 30:1 and went to 20:1 this got me significant results. I am just finishing up the last of my 20:1s and I am now starting on 18:1. My experimenting has become a little complicated as I just realised that I am running out of WC 820 and there is no more out there. So I am evaluating the last of my 20:1s with new powder. I have started with Lil Gun. and it is showing some promise. any suggestions? 40 Rod


	IP Logged

JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: Alloy Hardness & Smaller Groups Reply #34 - Oct 19^th, 2011 at 4:43pm	Print Post
	40 Rod I would give Alliant 300MP a run for the money and I just sent you an e-mail with some of my test results for your review. J.Louis

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
	IP Logged

CajunRebel Oldtimer Offline Posts: 694 Location: Alexandria, VA Joined: Nov 18^th, 2007	Re: Alloy Hardness & Smaller Groups Reply #35 - Oct 19^th, 2011 at 6:20pm	Print Post
	40_Rod - Please, see if you notice faster/higher barrel heating with Lil' Gun. Typically, I use H4227 in my 22Hornet and tried some Lil' Gun. With fixed cartridges - Hornady 40gr V-Max bullets, pistol primers, I noticed the barrell heated up much, much faster.


	IP Logged

Pages: 1 2 [3]

Send Topic

‹ Previous Topic | Next Topic ›

« Board Index ‹ Board Top

Page completed in 0.6791 seconds.