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I agreeYou're about to open a big barrel of worms.
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I agreeYou're about to open a big barrel of worms.
Again, you are putting far too much faith in a single 4 shot group. Shoot multiple 10 shot groups and youll have a better understanding of how that rifle is really going to behave.I certainly have read that custom barrels will generally yield much better accuracy than factory barrels, and I'm sure that, in general, it is a true statement. However, I have seen some videos of precision shooters getting horrible accuracy out of their super expensive custom barrels in their super expensive precision rifles as they try and work up a load for the gun.
I'm not sure what the attached photo says on the subject, but this is what Velzey was able to achieve with 4 shots of factory ammo at 100 yards out of my new factory barrel when he was sighting in my new Model 70 SG after mounting my new Zeiss scope. To be quite honest with you, that level of accuracy is a good enough enjoyment factor for me.
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Whether or not neck turning will improve accuracy in your rifle depends a lot on your rifle and the chamber that is cut into it. Rifles that are chambered for neck turned brass benifit more from neck turning than those that are not. Barrel whip on a slim barrel will be more pronounced than on a heavy barrel.
While it is true that making the neck of the brass the same size all the way around will help center the cartridge better in the chamber, some chambers are cut off center at the factory and there is nothing short of cutting off the back of the barrel and re-chambering it that will change that.
Most factory rifles have a chamber cut for brass that is not turned, so turning the brass for factory rifles will not likely make much difference in accuracy.
If you are going to turn the necks it is usually a good idea to shoot the brrass at least a couple of times before you turn it. As you shoot each round small amounts of brass will migrate from the body and shoulder up into the neck. That is the time to measure neck thickness, not when the brass is new. It would be equally important to make sure all the cartridges are the same length so that the bullets leave the case at the same time so they are all going the same speed when they hit the lands. Uniformity is a key to accuracy. Make everything exactly the same, or as close as possible. After that, making sure the bullets are loaded straight in the cases is one more variable you will want to check. Hornady and some other companies make gages to check for run out. If you did everything else right but the bullet is not loaded straight in the case you will have a problem with accuracy there as well. I hope that was not too much information all at once.
Feel free to PM me if something I said was not clear.
The consistent feedback appears to be that you will likely have to neck turn if you have a very tight custom chamber.Sounds good, except for your last statement. The reason most of us are saying its not necessary is because you are loading for a factory hunting rifle. This is not a high dollar benchrest rifle, in which case youll want to do everything you can to keep up with the competition. If you've ever shot any form of benchrest, youd know what im talking about. Theres a reason those guys and rifles shoot into the consistent .2's. They have precisely machined chambers and those guys know their exact dimensions, where they strive for about .002" neck clearance and they develop absurdly straight ammo, run their bullets through junenke machines, that test concentricity. The list goes on and on, as to why these things matter greatly in a benchrest rifle, and reasons to not go to these extremes in a factory "hunting" rifle. There are a lot of hunters here that have been handloading for a long time and most of us will tell you that when loading for a hunting rifle, priority #1 is always reliability. Every round has to chamber effortlessly and safely, then its accuracy. We are not trying to burst your bubble here, just trying to state the reasons why it may not be the best option for a hunting rifle. If you dont understand this now, you will after years of hunting and competition type shooting under your belt.
Everything you've said I agree with except for the last sentence, which, has been addressed.I was able to find a used Hornady concentricity gauge here for $50 so I scooped it up. So, I'm covered on that front.
Looking at some of the feedback that suggests I'm wasting my time with this, perhaps I should clarify how this whole neck turning question got started. Please bear with me.
When I looked at buying my first bolt-action rifle, I naturally looked at factory guns. I decided on the Winchester Model 70 Super Grade because both the wife and I are suckers for good wood and glossy blue steel (she's an equal partner in this). It is a very high quality factory gun with a long and rich American heritage, and we were not terribly interested in pursuing the somewhat stressful, high-priced competition shooting game - at least not yet. Basically, we wanted a high quality factory rifle that's accurate, looks good, is fun to shoot and could be used for the occasional hunting trip. And we decided on the 7mm-08 because I already have some familiarity with the .308 (I have a Springfield M1A in .308), you can get the M70 SG today in that caliber (unlike the 6.5mm cartridge everybody seems to rave about), and my wife liked the idea of a bit less recoil (she's a damn good rifle shooter - better than me on average).
But only a moron would not want to get the best accuracy possible from their new rifle - no matter what it is. It's not going to be very much fun going out and never be able to do better than MOA at 100 yards. But based on our research, including some excellent YouTube videos from GunBlue490, most factory guns should be able to shoot MOA right out of the box. Given the price point of the Win M70 SG, we felt pretty confident we could expect this from our new rifle. And it is much prettier than the Tikka T3 - at least in my wife's opinion (and you should never downplay the WAF ).
We brought our new rifle to Velzey to mount our new scope and give the gun a thorough going over. Velzey was able to confirm an excellent bore and chamber with an extremely solid bedding job - it was a definite keeper. So we decided to splurge a bit and switched out the factory MOA trigger for a lighter Timney trigger. And you've already seen a photo Velzey took during the sighting in process. So we knew this rifle was capable of excellent accuracy with high quality factory ammo. And we've been able to confirm that.
Well right off the bat, pretty much everyone here said factory ammo is not very consistent so you should seriously consider reloading for your new rifle. OK, that sounds like fun - I already have experience reloading for my .38 Supercomp racegun, our Colt SAA cowboy guns and our beautiful 38-40 and 44-40 Winchester Model 1892 lever guns.
Well, the first thing I learned is that my Dillon RL550 is probably not the best choice for producing a relatively small number of high quality bottleneck rifle cartridges. So the hunt was on for a new press.
After doing a lot of research - something that everyone seems to agree is a good thing to do before tackling the whole reloading endeavor - I decided on a Redding T7 turret press because:
The next question is what dies should you use? Should you full length resize? Should you neck size only? Should you bump the shoulders of your cases? If you neck size, should you use a bushing die or collet die? If you use a bushing die, should you also use an expander?
- I was used to a progressive type press,
- the reviews were very good and guys like Jeff Brozovich and Sam Millard are using this press, and
- the Forster Co-Ax is essentially unobtainium.
And what are the factors that yield high quality hand loaded ammunition? Of course, everyone seems to agree your choice of bullet, powder and powder charge are the most important factors. Once you nail these down, the goal should then be consistency - consistent bullet weights, powder charges, case volume...
Ah, the somewhat neglected cartridge case now enters the mix.
Well, everyone swears by Lapua so that seemed like a good choice for brass. Then you start reading about things like runout, consistent primer pockets and flash holes, and consistent neck thickness.
And now you see how this thread got started.
Now some of you are going to say "but all this stuff really only matters if you're using one of those heavy barrel, 21st century, super-duper precision rifles - just get a simple single stage Lee press, a set of Lee dies and you're good to go for your 'factory' rifle".
Well, even though the wife and I decided on a 'factory' rifle, that doesn't mean I don't give a crap about quality and accuracy. I'm a full-blown perfectionist - always have been. And I really enjoy the whole concept of reloading and striving for the best accuracy possible out of whatever gun I have.
And please don't assume from my comment above that I think Lee products are crap or something. I am totally convinced all the reloading suppliers - Lee, Lyman, RCBS, Hornady, Redding, Forster, LE Wilson, K&M and others - all make very good quality products. But my research has clearly shown certain preferences for certain tools that run across the entire set of manufacturers.
Is it possible I won't notice a damn bit of difference between the most basic Lee setup and a top-of-the-line Redding solution in my factory rifle? Perhaps. But I really don't care. Since I have no experience to judge by, I will judiciously pick the tools from any of the above manufacturers that most serious shooters - people like you - are using to their advantage. Basically, I enjoy learning about the whole reloading process. It gives me something interesting and fun to do on crappy weekends. And with the great feedback I'm getting, I know I will be able to achieve the best accuracy possible out of this rifle that has all the potential to be a very accurate rifle. Moreover, I'll have a solid setup if we ever decide to get one of those high-end precision rifles down the road.
And to close, I have learned one thing for sure from all the excellent feedback that's been presented here - I'm not likely to get much bang for my buck by neck turning my Lapua brass - regardless of the type of rifle I have.
Thanks for listening.
Trying to corrupt him early on I see...LOL, you are so hooked. May as well go ahead and get the neck turning tools now and give those Lapua brass a 75% skim turn. Sounds like you will be doing it soon enough anyway.
I shoot at TCGC on the weekends - usually show up around 8 a.m. though while the wind isn't blowing so bad. I have some tight neck target rifles I would let you shoot if you are interested. I'm usually at one end or the other on the 100 yard range. Shoot a target rifle with a 2 oz trigger and you will never be the same.
Cool video.Bye-the-way, here is a video from GunBlue490 that got me first thinking about neck turning and looking for further guidance here on the subject.
It is an excellent video and I think it captures more or less what I've now been able to confirm. Keep in mind, however, that the video does impart the very slightest implication you may get a tiny bit of improved accuracy in your factory rifle by taking off any high spots on the case neck.
I received the book yesterday, read the introduction and skimmed through the rest of it. The info in this book is exactly what I was looking for that wasn't being covered in my Sierra and Nosler reloading manuals. And even Richard Lee's book, which I picked up based on GunBlue490's recommendation, doesn't cover the material in Mr. McPherson's book. So it was definitely money well spent!I watch a few other of his videos too. Seems to know what he's talking about.
I think you're really going to like that precision reloading book.
Of course. Glad you'll get good use out of it!I received the book yesterday, read the introduction and skimmed through the rest of it. The info in this book is exactly what I was looking for that wasn't being covered in my Sierra and Nosler reloading manuals. And even Richard Lee's book, which I picked up based on GunBlue490's recommendation, doesn't cover the material in Mr. McPherson's book. So it was definitely money well spent!
Thanks a bunch Dizzyj for the recommendation and link to this book. I really appreciate it!
The consistent feedback appears to be that you will likely have to neck turn if you have a very tight custom chamber.
However, even Sam Millard of Panhandle Precision says that he doesn't bother with neck turning if his TIN (learned a new acronym here which I assume stands for Thickness Interior Neck) varies by less than 0.002" (see his numerous YouTube videos - he certainly appears to be one very serious long-range hunter and competitive target shooter). And it would seem practically all Lapua brass can be counted on to meet this requirement. Hence no neck turning needed with Lapua brass and any rifle with a SAAMI spec chamber.
And no, I have not done any bench rest type of shooting - at least not formally. The wife and I have taken our new rifle out a number of times to the 100 yard range at TCGC and used either a Caldwell Tack Driver bag (my preference) or our new Bald Eagle shooting rest (my wife's preference) on one of the shooting benches to test our factory ammo, practice our shooting skills and have some fun with the new rifle. We have not quite been able to put more than 4 shots essentially into one hole, but we have been able to maintain consistent 1/4" groups of ten or more shots with Winchester BST and Nosler BT factory ammo if we take our time and don't screw up.