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Ruger M77 VT 220 Swift

This is a discussion on Ruger M77 VT 220 Swift within the Range Reports forums, part of the Firearm Forum category; As promised I wanted to post the first range results of my new Ruger in 220 Swift. I tried several bullets including 50 grain nosler ...


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Old March 5th, 2017, 06:45 PM   #1
 
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Ruger M77 VT 220 Swift

As promised I wanted to post the first range results of my new Ruger in 220 Swift. I tried several bullets including 50 grain nosler BT's, 55 grain Hornaday Vmax, 55 grain Nosler BT and some barnes 50 grain varmint bullets as this is a woodchuck rifle. I also tried several powders including RL15, IMR4064, H380, IMR4831 & Varget. I probably could have made several combinations work but the rifle seems to favor a max load of IMR4831 and/or 38 grains of IMR4064 with the 55 grain Nosler BT. After about 70 rounds down the tube, it seems to clean right up with just a few patches and some butches bore shine. I did the usual 1 shot shoot clean for the first 10-15 rounds and then every 3 rounds for the next 20 or 30. I still need to do some more testing but I think the Imr4831 and the noslers about .010" off the lands are gonna be the winner in this rifle. I'll have more pictures soon but I attached one of the Imr4831 55 grain nosler 3 shot groups below. Thanks and feel free to ask any questions.
Attached Images
File Type: jpg IMR4064.jpg (425.8 KB, 36 views)
File Type: jpg Ruger220swift.jpg (1.17 MB, 28 views)



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Old April 9th, 2017, 02:33 AM   #2
 
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Update

It's been a little while since I last posted and I wanted to share some more information. As I noted in my other posts, I was getting some real good accuracy from IMR4831 & IMR4064 but I think 4831 has a slight edge. I've been experimenting with 43.5 & 44.0 grains of 4831 but both loads are very close in accuracy & consistency.

I was getting an occasional flyer on my third shot of my 3 shot groups so I have been playing with seating depth. I think I've managed to get it to go away by seating the bullet .005-.010 off the lands. Another trick I've learned over the years is to seat the bullet half way in the case and then turn the round 180 degrees in the press and fully seat the round. I've been told this helps with run-out but have not verified this with an indicator. All I know is that it usually appears to help shrink my group size. See attached pics. Squares are 1 inch.

I decided to bed the action and first several inches of the barrel. It came out pretty nice but I have not had a chance to shoot it again. I read an article where the author had good luck bedding the barrel up to the point where it narrows into the thin portion (just ahead of the chamber) so I tried that this time. He recommended full floating with a true bull barrel but the ruger is not a true bull. I've bedded several rifles but this is my first ruger. I'll let you guys know if it helps any. If not I can always remove a portion of the bedding under the barrel. What I can tell you is that the stock fits the action like a glove now. Oh I used Pro Bed 2000 for the first time and am pretty happy with it so far. See attached pics.
Attached Images
File Type: jpg IMR4831NOS.jpg (514.2 KB, 16 views)
File Type: jpg IMR4831NOSBTST.jpg (515.8 KB, 22 views)
File Type: jpg rugerbed.jpg (1.21 MB, 22 views)
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Old April 9th, 2017, 03:18 AM   #3
 
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I grew up in Lancaster, nice to find you on the forum!

Seems like you're getting there, keep it up! 5 shot groups are good too for load development, if you're getting flyers with 3 shots it may seem like a less accurate load with 5 shots, just a thought. It can really help you narrow down the best loads quickly.
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Old April 9th, 2017, 03:38 AM   #4
 
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Quote:
Originally Posted by ShortRownd View Post
I grew up in Lancaster, nice to find you on the forum!

Seems like you're getting there, keep it up! 5 shot groups are good too for load development, if you're getting flyers with 3 shots it may seem like a less accurate load with 5 shots, just a thought. It can really help you narrow down the best loads quickly.
I totally agree. More shots the better. Typically though with hi powered rounds like the swift and a pretty thin barrel (for a varmint rifle) I reduce the number to 3 shots and just shoot more groups. I also wait 1 minute between rounds and let the rifle cool for 15 minutes after every three. That way I don't get barrel heating affecting my data. I typically shoot over a backer board to see how groups are stacking up over time. Thanks again!
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Old April 12th, 2017, 05:46 PM   #5
 
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Chucks

Managed to get out and do a little chuck hunting. Didn't get any long range shots. Farthest chuck was at 125 yards. Got 4 total in a few hours. It was pretty windy so I only put a couple of shots on paper with the new bedding but it doesn't seem to have hurt anything. I'll keep you posted.
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File Type: jpg sodmonkey.jpg (2.87 MB, 14 views)
File Type: jpg sodmonkeys.jpg (2.80 MB, 14 views)
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Old April 15th, 2017, 03:47 PM   #6
 
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Update

I had a chance to go out and shoot the rifle with the new bedding. Range conditions were not the greatest. I had a pretty steady 5-10 mph cross wind and it was very sunny. Anyway the rifle shot very well with most all of my original hand loads. One load that did not shoot as well was my preferred load of IMR4831. One thing that I did notice was that the rifle is very consistent now. The best part is that I have completely gotten rid of the occasional flyer. I had decreased the number I was getting by adjusting seating depth but still had the occasional flyer.

I tried RL17 on the advice of others and it shot very well (see pic). As mentioned in my other post (gunsmithing section) my action screw torque was set to 30 inch pounds on the front screw and 25 on the rear. Ninety inch pounds on the front screw is no longer needed after bedding. The center screw was lightly seated. I put some blue loctite on it to keep it in place. Again I think the best part of bedding this rifle was how it improved shot to shot consistency and getting rid of the occasional flyer. I don't feel it made it much more accurate in general but for a factory barrel I feel it's doing pretty well. I've attached a few of it's preferred loads below. The first shot on the IMR4350 load was on a cold clean bore so I'l be revisiting that load soon in search of a one hole group! Thanks.
Attached Images
File Type: jpg IMR4350.jpg (816.6 KB, 21 views)
File Type: jpg RL17.jpg (498.3 KB, 18 views)

Last edited by persico; April 16th, 2017 at 06:50 PM.
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