The Accurate Reloading Forums
Convert a Ruger 77MkII to 300H&H?
28 May 2016, 19:56
HPMasterConvert a Ruger 77MkII to 300H&H?
Okay, So I am a Lefty and want a one-for-all NA hunting rifle. I like the 300 H&H for all the wrong reasons.
How feasible is it to modify a long action Ruger 77 to feed and hold the 300H&H?
I have a deal on a 7Mag LH 77MkII.
I think shortening the ejector, lengthening the box and shortening the feed ramp would be about all. Am I about right?
Would a cut need to be made in the rear bridge and/or a notch in the front ring be required or a nicety for ease of loading?
Thanks
28 May 2016, 21:14
Brandon.Gleasonquote:
Originally posted by HPMaster:
Okay, So I am a Lefty and want a one-for-all NA hunting rifle. I like the 300 H&H for all the wrong reasons.
How feasible is it to modify a long action Ruger 77 to feed and hold the 300H&H?
I have a deal on a 7Mag LH 77MkII.
I think shortening the ejector, lengthening the box and shortening the feed ramp would be about all. Am I about right?
Would a cut need to be made in the rear bridge and/or a notch in the front ring be required or a nicety for ease of loading?
Thanks
Depending on how good a deal you're getting on that Ruger, I'd sooner give Montana Rifle Co a call and see how much it'd set you back to buy a new rifle right from them before incurring all of the costs and labor of converting the Ruger. They're showing their V2 extreme in 375H&H for under $1500, I'm sure they could do the 300 H&H for the same.
28 May 2016, 22:02
speerchucker30x378quote:
Originally posted by Duane Wiebe (CG&R):
I would try some ammo in it first. From the custom end, I make lots of 300 H&H, don't even know where my 300 Win and Wby reamers are
+1 The first thing you do with any conversion is get some factory ammo and check the mag box length and feed. Even partial feeding magnum shells in a 30-06 will tell you a lot. They might not be able to go into the chamber but as long as they are tracking properly and the nose is lifting properly for the first half of the trip, you can expect a lot smoother conversion. Rechecking it after the barrel is off is even better.
When I was a kid. I had the stick. I had the rock. And I had the mud puddle. I am as adept with them today, as I was back then. Lets see today's kids say that about their IPods, IPads and XBoxes in 45 years!
Rod Henrickson
OP is right in his analysis; it won't fit or feed as is, but will need box lengthened; I have looked at doing this; one issue is that the middle guard screw is in the way for moving the box back. I might throw that away.
28 May 2016, 22:35
speerchucker30x378quote:
Originally posted by dpcd:
OP is right in his analysis; it won't fit or feed as is, but will need box lengthened; I have looked at doing this; one issue is that the middle guard screw is in the way for moving the box back. I might throw that away.
Hummmm
Is that fool screw not needed to hold the front end of the trigger guard down against the mag spring pressure? Or is there room to move that screw rearward 1/4 inch?
Just spit-balling with no M77 in front of me.
When I was a kid. I had the stick. I had the rock. And I had the mud puddle. I am as adept with them today, as I was back then. Lets see today's kids say that about their IPods, IPads and XBoxes in 45 years!
Rod Henrickson
28 May 2016, 22:45
speerchucker30x378Just looking at pictures the square tab on the trigger guard could be cut off and a screw with a smaller diameter could be installed under the mag release like it is in the Parker Hale 1200 C. It looks like there would be enough room to mill the M77 trigger housing (if you can call it that) back a bit for a new and smaller diameter screw screw. Just sayin.
When I was a kid. I had the stick. I had the rock. And I had the mud puddle. I am as adept with them today, as I was back then. Lets see today's kids say that about their IPods, IPads and XBoxes in 45 years!
Rod Henrickson
29 May 2016, 02:39
farbedoThis has, for the most part, been done. Dave Scovill, wrote an article about an M77 MK2 converted to 375 H&H by Bill Atkinson.
Here is a link to that article, he gives some detail of what was done. Moving the bolt stop would be the tricky bit the way they are mounted, IMO, but you could fit another style bolt stop without too much difficulty.
http://www.riflemagazine.com/m...?tocid=1186&magid=84Jeremy
29 May 2016, 04:35
ramrod340I have a link at home I can post mid week. Thanks you through the steps to take one to 375 H&H. If.I remember not that hard
Should have hit the link above that was it
As usual just my $.02
Paul K
29 May 2016, 07:50
jeffeossochange the box and follower -- not much work to make it work ...