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Any favorite SR4759 loads for 38-55 255-grn lead? (Read 560 times)

Lefty38-55 Senior Forum Member Offline Posts: 366 Location: New England Joined: Sep 11^th, 2013	Any favorite SR4759 loads for 38-55 255-grn lead? Sep 17^th, 2024 at 11:26am	Print Post
	Rifle is a CPA 44-1/2, from Gail. I see a lot of IMR4227 loads around ~17-grns, but no equivalent for this old powder.

	All of my single shots shoot one tiny ragged hole with cast bullets ... it's just the following shots that tend to open up my groups ...
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craigster Oldtimer Offline Posts: 684 Location: lost coast CA Joined: Feb 20^th, 2011	Re: Any favorite SR4759 loads for 38-55 255-grn lead? Reply #1 - Sep 17^th, 2024 at 12:09pm	Print Post
	From my old Lyman manual, 10.5 to 18.5, 250gr bullet.


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frnkeore Frequent Elocutionist Offline Posts: 7268 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Any favorite SR4759 loads for 38-55 255-grn lead? Reply #2 - Sep 17^th, 2024 at 2:03pm	Print Post
	An old target load from the '80's is 18.5 gr, with a 280 - 290 gr bullet.

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Green_Frog Frequent Elocutionist Offline "It ain't easy being green" ASSRA Life #281 Posts: 4020 Location: Lynchburg, VA Joined: Apr 18^th, 2004	Re: Any favorite SR4759 loads for 38-55 255-grn lead? Reply #3 - Sep 18^th, 2024 at 10:44am	Print Post
	Member Bob Fitzgerald, formerly posting as FITZ used to shoot a 38-55 high wall when he came down here to VA to compete. One of the powders he frequently used was IIRC was 4759 as well as 4227. I think he currently posts as “Old Tuck”. Perhaps he’ll see this and chime in. Froggie


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Lefty38-55 Senior Forum Member Offline Posts: 366 Location: New England Joined: Sep 11^th, 2013	Re: Any favorite SR4759 loads for 38-55 255-grn lead? Reply #4 - Sep 20^th, 2024 at 1:22pm	Print Post
	Thanks all! Yes I have manuals, ... but I guess I was hoping someone would have QuickShot and could give me an equivalent charge of 4759 to meet the 4227 load.

	All of my single shots shoot one tiny ragged hole with cast bullets ... it's just the following shots that tend to open up my groups ...
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frnkeore Frequent Elocutionist Offline Posts: 7268 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Any favorite SR4759 loads for 38-55 255-grn lead? Reply #5 - Sep 20^th, 2024 at 8:33pm	Print Post
	There is hardly ant difference in 4759 and 4227 burn rates. At our pressure range, you can use 4227 at the same weight as 4759 and get the same velocity with in about 1% or less.. Because it's not coated, primers make a difference with 4759 but, 4227 doesn't care much, which primer you use.

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boats Frequent Elocutionist Offline Posts: 7545 Location: Virginia Joined: Apr 23^rd, 2004	Re: Any favorite SR4759 loads for 38-55 255-grn lead? Reply #6 - Sep 22^nd, 2024 at 7:55pm	Print Post
	Like others 38/55 I use the same weight charge 4227 or 4759 and a 255 gr cast bullet Very little difference in point of impact. My notes gave it 1 moa. Probably more difference between lots and the 3 places of manufacture with 4227 than 4227-4759 same vintage same source. 17 grs is what I use either Powder. Boats


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