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Double Rifles, Single Shots & Combinations >> 'Classic' Firearms Photos & Archive

eagle27
.400 member

Reged: 24/01/09
Posts: 1124
Loc: Nelson, New Zealand

Re: Schultz and Larsen 54j
11/06/16 07:36 AM

I don't know about the M54J but I am sure it would have the same twist rate as the M60 which is stamped on the barrel as 1:12 for the 7x61 chambering. This twist rate stabilised the sleek 160gr boattail bullets and of course lighter projectiles but would not usually stabilise 175 gr bullets so well. The later model S&L rifles, the M65 and M68, had 1:10 twist barrels.

I did load some Norma 175gr round nose bullets in my M60 and used on Whitetail deer in the bush and accuracy was fine for this application but Speer 175gr SS Magnum projectiles showed greater instability at longer ranges, not key holing but showing enlarged bullet holes on paper. Accuracy was still minute of big animal, shot a few large wild cattle with the Speer bullets at longer range and they certainly knew what had hit them. Never chronographed any 175gr loads but was using Norma N205 powder at the maximum recommended charge so likely achieving close to their advertised 2900fps MV.

As often mentioned in various reloading books, the 7x61 usually achieved high velocities with smaller amounts of powder than any of the other 7mm Magnums and was superbly accurate doing so.
Lyman and Speer were always praiseworthy of the 7x61 cartridge while Hornady seemed to be more interested in protecting and boosting the reputation of the 7mm RM and WM cartridges above any others. Ironically Joyce Hornady shot a record Moose with a 7x61.

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Subject	Posted by	Posted on
Schultz and Larsen 54j	cordite	06/06/16 05:52 AM
Re: Schultz and Larsen 54	TIMBERMAN	19/12/19 03:14 AM
Re: Schultz and Larsen 54	93x64mm	19/12/19 06:52 AM
Re: Schultz and Larsen 54	Rule303	19/12/19 09:11 AM
Re: Schultz and Larsen 54	vykkagur	22/12/19 04:45 AM
Re: Schultz and Larsen 54	Rule303	22/12/19 07:22 AM
Re: Schultz and Larsen 54	vykkagur	22/12/19 02:14 PM
Re: Schultz and Larsen 54	lancaster	22/12/19 06:17 PM
Re: Schultz and Larsen 54	vykkagur	23/12/19 12:53 AM
Re: Schultz and Larsen 54j	cordite	06/06/16 06:02 AM
Re: Schultz and Larsen 54j	DarylS	06/06/16 08:17 AM
Re: Schultz and Larsen 54j	Yochanan	06/06/16 06:28 PM
Re: Schultz and Larsen 54j	eagle27	06/06/16 08:36 PM
Re: Schultz and Larsen 54j	cordite	06/06/16 11:39 PM
Re: Schultz and Larsen 54j	DarylS	07/06/16 09:48 AM
Re: Schultz and Larsen 54j	cordite	11/06/16 05:12 AM
Re: Schultz and Larsen 54j	eagle27	11/06/16 07:36 AM
Re: Schultz and Larsen 54j	cordite	13/06/16 12:44 AM
Re: Schultz and Larsen 54j	lancaster	13/06/16 04:42 AM
Re: Schultz and Larsen 54j	cordite	26/06/16 08:10 AM
Re: Schultz and Larsen 54j	eagle27	26/06/16 08:34 AM
Re: Schultz and Larsen 54j	cordite	27/09/16 02:03 AM
Re: Schultz and Larsen 54j	Sarg	22/12/19 09:24 AM
Re: Schultz and Larsen 54j	DarylS	22/12/19 02:12 PM
Re: Schultz and Larsen 54j	Jorgen	30/09/16 06:28 PM
Re: Schultz and Larsen 54j	cordite	01/10/16 12:20 AM
Re: Schultz and Larsen 54j	Jorgen	02/10/16 11:35 PM
Re: Schultz and Larsen 54j	lancaster	27/09/16 04:00 AM
Re: Schultz and Larsen 54j	lancaster	07/06/16 05:41 AM

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