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Post by 72camaro on Sept 23, 2016 19:25:57 GMT -7
Got a couple hunting rifles to sight in since I've been swapping scopes on a couple. I've got a 7mm that if the barrel is cold cold, it will shoot the same spot at 200yds. Start shooting just a couple rounds and if there is any heat in the barrel at all it will start walking the shot. It is a Remington 783 base bolt action hunting rifle and I shot my elk last year with it and it shot right on the spot I was aiming at. This gun walks the shot more than any other gun I have when it gets warm. It will walk it 5" if warm enough at 200yds, but as mentioned, if cold cold, it is pretty amazing.
My new.270 is the same model and I've cleaned it twice now and with about 10 shots through it, it has a lot of copper fouling and is coming out blue and it now has a different scope on it than stock. The stock one that came with it was so terrible and no eye relief I almost got a black eye. That is what started the scope swapping to get a Nikon on it. I'm going to do some polishing in the barrel in the morning to see if it smooths out and leaves less copper. My brother was doing sub 1 MOA with his a year or two ago with the same model, with factory ammo. I do not have much brass so factory for a while.
The Varmint .243 Remington 700 just received a different scope on it now and needs to be sighted in too. I got the .270 above to let my Dad hunt with it as I think at his age it was getting a bit heavy with the Varmint barrel. That is my Rockchuck gun and my deer rifle and can really be accurate as long as it does not get too warm too as it will walk, though not as fast as the 7mm, but will walk when it gets a bit of warm on the barrel but I have a 58 grain V-max load that is a great varmint round and has shot a fair number of rockchucks as well as it does have 3 deers under its' belt, one by me, one by my son-in-law a couple days later and my Dad has got one with it.
Cold barrels rule, others drool.
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Post by broper on Sept 24, 2016 5:09:03 GMT -7
Maybe they need to be free floated. Sometimes barrels expand enough when they get warm to rub on the stock. Maybe there won't copper foul so bad when they get worn a little. Do you only shoot factory rounds? Sometimes different bullets don't foul as bad. If they foul that bad it's important to keep them clean. Copper fouling really causes inaccuracy. The .270 is my favorite for game hunting and have shot a few varmints with it. I bought my .270 in 1967 and I can still shoot 1" groups with it.
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Post by 72camaro on Oct 3, 2016 9:44:42 GMT -7
Not sure what the deal is but the 7mm was 2" high at 200 and I need 1" so I clicked it down 2 that should put it on and it shot 0" high, moved back up two and shot 2" high, moved back down 2" and shot 0" high so two groups 1/2" apart at 2" and 2 at 0" and all close enough left/right to center line. Click back up one and left it.
.270 was close enough for deer with factory ammo while I wait for my brass supply to have enough to do ladders. Gun is running just a hair over 1MOA.
.243 I ran out of factory ammo and went with my old load, two in the 1" circle at 200yds. Done.
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Post by broper on Oct 3, 2016 18:05:46 GMT -7
Sounds good. Good luck.
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Post by 72camaro on Oct 9, 2016 5:38:15 GMT -7
Couple things have come out of my last range session so I'm going to try and head back today. My Remington 700 was barrel was lapped at the factory as I was having accuracy issues and it came down to it that I was not using a good copper solvent and they also felt that their finish was evidently not up to par. I was using a pretty hot factory load that with a barrel scope you could see was heat cracking inside the barrel, this was before I sent it in. They cleaned it, lapped it and voila, sub MOA right out of the box after being returned.
My Remington 783's, both barrels looked a bit rougher than I liked seeing, one some discoloration as they shoot it before it comes out of the factory. The accuracy was around 1MOA and I just like accuracy, no doubt about it, so I've lapped one barrel earlier and seen the groups come down so now I did it to both, one for the second time, and need to get to the range and do a couple fouling shots and try again and see what they do for the .270 and the .7mm.
I have had a couple issues with my 7mm and my reloads and I'm not quite sure but I think I may have gotten some less than perfect TTSX Barnes bullets. Every once in a while I'll put one in and it feels as though it is hitting the lands and not .040 off as I've found it likes and when I pull the round out it has small scratches on the bullet side low by the brass as though the shapes are not always consistent, but, the length is still correct and not pushing it in. I think I did throw in a couple bullets from my old box into my new box of reloading bullets and it appears that each box needs to have the "off the lands" checked per box.
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Post by broper on Oct 9, 2016 8:13:49 GMT -7
Sounds like your getting things worked out pretty well. I have heard of bullets in the same box having different ogives, somehow the y sneak by quality control somehow.
To bad you couldn't have participated in our coyote tournament Fri & Sat. One of the best we've ever had.
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Post by 72camaro on Oct 9, 2016 8:30:46 GMT -7
You know, for all the hunting I've done coyote is one that I've always wanted to do but never have. I've bought the caller, I've got the battery powered fur shaker, I've worked up loads 58 grain and 70 for my.243; and if closer within 250yds, I don't know what you guys usually shoot by my .223 with .40 grains can pick off flies at least up to 200yds. Time wise it has just never worked out and now I spend so much time getting ready for deer and mainly elk hunts with a dose of reloading when I can there just does not seem to be enough time.
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Post by broper on Oct 9, 2016 11:41:59 GMT -7
Yeah, I understand what your saying. I like big game hunting too but the last few years I've been focused more on predator/ varmint hunting and varmint cartridges and rifles. Maybe it's because I'm getting older, I don't know but I'm enjoying it and flat have fun. One year you should focus mainly on varmints, just for the experience. Try to arrange things so you can get over here for at least one of our tournaments. The one we just had, "Hand Calls Only-Blast from The Past", would be a good one or the December "Song Dog Classic", a one day hunt. Lot's of fun. Lot's of guys work calling coyotes in between their big game hunts. You'd have lot's of fun and create more good memories.
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Post by 72camaro on Oct 10, 2016 20:10:51 GMT -7
Cleaned the.270 again, super thorough and it started about 4" high from where it should have been, after the first fouling shot it started to settle in quickly. Shot the last two after a scope adjustment that were about 1/2" apart, just a hair low but not worth messing with at 200yds and calling it good. The lighter air at 5900 will bring it up a quarter inch so I'm looking good and can finally stop screwing with it.
But, when I get back from deer I have to do the same with my 7mm.
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