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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

NONE

Re: Found a rifle to start my .505gibbs
11/03/04 04:37 AM

The problem with the M77 RSM is that the magazine box is too short for the 505 Gibbs. It is plenty wide enough, just too damned short. The 500 Jeffery and/or 500 AHR feed just fine from the stock Ruger RSM 416 Rigby mag box, albiet the feed ramp needs widened. Also, you will need to drop the bottom about 0.25" to comfortably fit 3 rounds of 505 Gibbs, a little less to get the 500 Jeffery/AHR to fit. This isn't as difficult to do as one might think since the Ruger uses 2 piece bottom metal.

The last major issue is that the Ruger has NO receiver recoil lug. So one must fabicate either:
1.) A recoil plate which is sandwiched between barrel and receiver (cheesy solution looks like a M700)
2.) Fabricate and fit two recoil lugs to the underside of the barrel. This is easy to do if one is reboring the Ruger barrel since it has a second 1/4 rib on the bottom side of the barrel (pretty much like the one on top).

Personally, I think 500grains has the right of it though.

Scott

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Subject	Posted by	Posted on
Found a rifle to start my .505gibbs	NONE	10/03/04 12:42 PM
Re: Found a rifle to start my .505gibbs	Gibbs505	11/03/04 02:36 PM
Re: Found a rifle to start my .505gibbs	475Guy	10/03/04 02:16 PM
Re: Found a rifle to start my .505gibbs	NONE	10/03/04 02:33 PM
Re: Found a rifle to start my .505gibbs	475Guy	10/03/04 03:05 PM
Re: Found a rifle to start my .505gibbs	DONOTDELETE	11/03/04 04:37 AM
Re: Found a rifle to start my .505gibbs	hubel458	11/03/04 12:15 PM
Re: Found a rifle to start my .505gibbs	500grains	11/03/04 01:36 AM
Re: Found a rifle to start my .505gibbs	NONE	11/03/04 10:50 AM
Re: Found a rifle to start my .505gibbs	hubel458	11/03/04 12:20 PM
Re: Found a rifle to start my .505gibbs	atkinson6	11/03/04 04:36 AM
Re: Found a rifle to start my .505gibbs	Robgunbuilder	11/03/04 06:52 AM

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