ASSRA Forum - .38-55, IMR-4227, 320gr breech seated bullet

ASSRA Forum › General › Reloading the Single Shot Rifle › .38-55, IMR-4227, 320gr breech seated bullet

(Moderator Group: Moderator)

‹ Previous Topic | Next Topic ›

Pages: 1

.38-55, IMR-4227, 320gr breech seated bullet (Read 1960 times)

gunlaker Frequent Elocutionist Online Posts: 2610 Location: lower mainland, B.C. Joined: Dec 13^th, 2010	.38-55, IMR-4227, 320gr breech seated bullet Jul 12^th, 2019 at 9:07am	Print Post
	Hi, What would the useful, and safe, powder charge range be for a modern highwall chambered in .38-55 using IMR-4227, and a breech seated 320gr bullet? thanks, Chris.


	IP Logged

frnkeore Frequent Elocutionist Offline Posts: 7660 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: .38-55, IMR-4227, 320gr breech seated bullet Reply #1 - Jul 12^th, 2019 at 12:26pm	Print Post
	15 - 19 gr. 20 gr would be safe but, the bullet might not like it. 4759 and 4227, are very close in burn rate. A famous (to me anyway) load, used in the 1970 - 80's was 18.5 gr 4759, BSed in rifles at least as strong as Ballard. Frank

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

Premod70 Oldtimer Offline Posts: 873 Location: North Carolina Joined: Jan 16^th, 2016	Re: .38-55, IMR-4227, 320gr breech seated bullet Reply #2 - Jul 12^th, 2019 at 2:21pm	Print Post
	I get my best accuracy with a Accurate 295 grain tapered bullet using around 20 grains of IMR 4227. That load is used in my C Sharps Highwall and is safe in my opinion for that type action, can't say I would use it a lesser strength action.


	IP Logged

ssdave Frequent Elocutionist Offline Posts: 2138 Location: Eastern Oregon Joined: Apr 16^th, 2004	Re: .38-55, IMR-4227, 320gr breech seated bullet Reply #3 - Jul 12^th, 2019 at 2:22pm	Print Post
	I've had really good luck in mine using H4198 or IMR4198 and a 360 grain bullet. Might be a little higher velocity than you're looking for; as I recall 21.5 to 24 grains gives 1200 to 1375 fps. We use it for long range gong shooting out to 800+ yards. I tested loads that were up much higher than that, but didn't need the velocity, so I know it is an absolutely safe load in my high wall. I worked downwards to this load from about 28 grains. The 4198 burns clean and consistently. SD was a bit more than I would like to have, but that's always a challenge with small smokeless loads in large cartridges. Puff-lon or powdered oat bran (ground up in my spice grinder) as filler helped with the SD's, but didn't appear to help accuracy noticeably.


	IP Logged

OLD TUCK Senior Forum Member Offline Posts: 469 Location: Middleborough MA Joined: Oct 5^th, 2017	Re: .38-55, IMR-4227, 320gr breech seated bullet Reply #4 - Jul 12^th, 2019 at 5:17pm	Print Post
	I have been using 18.5 Gr 4759 for a number of years in my 38-55 rifles It has shot very good either fixed or breech seated. There also is a plus to using 4759. That is you cannot throw a double it will fill the case to the mouth and over flow. If you do not notice that then you should not be reloading. I like the big clumpy grains of 4759 as it takes up a lot of space in the Calibers I shoot. I do not find myself trying to "BUMP" powder charges to make sure they are down at the Flash Hole. HTH FITZ. OLD TUCK.


	IP Logged

Quarter_Bore Oldtimer Offline Posts: 817 Location: Joined: Dec 16^th, 2005	Re: .38-55, IMR-4227, 320gr breech seated bullet Reply #5 - Jul 12^th, 2019 at 6:58pm	Print Post
	I usually start out using 18 grains weight of IMR 4227 and adjust up from there. Maybe up to 19 or so but usually I just stay at 18 grains.


	IP Logged

gunlaker Frequent Elocutionist Online Posts: 2610 Location: lower mainland, B.C. Joined: Dec 13^th, 2010	Re: .38-55, IMR-4227, 320gr breech seated bullet Reply #6 - Jul 12^th, 2019 at 10:12pm	Print Post
	Thanks everyone. That gives me a place to start. I'm going to stick with IMR-4227 as that's what I've got on hand as I use it in my .32-40's. Chris.


	IP Logged

Pages: 1

‹ Previous Topic | Next Topic ›

Page completed in 0.6840 seconds.