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> Which one,
Which one,
@ 02:25 pm (GMT) |
Chris RuggIm nearly ready (shot out) to replace the barrel of my m700 25/06, I love the calibre for all its qualities except for bullet choice. I always thought I would rebarrel to 6.5/06 untill recently and now its a 7mm im after. Im stuck weather to with a standard 7mm rem mag for simplicity or go the 284win which give little away in the way of velocity and gives extended barrel life. It will be a trueflite ,and am unsure of the contour or barrel diameter yet, I am not afraid of a barrel heavy rifle as my 25/06 has an older magnum lenght mae supressor on it that probably weighs in at 600 grams or more, and ive carried that thing through the hills for the last 3 years. Do you consider these calibres acceptable 800yard capable?Or should I be looking at the 7mm practical for some extra omph? I will be sending the rifle to someone for load development to drain the last fraction of accuracy out of it. And new optics are on the cards to as my bushnell yardage pro has seen better days(still tracks well though) and has no paralax adjustment, I like the bushys and am considering one of the 6500 scopes. SOme advise would be great on above topics thanks.[b] |
Replies
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@ 03:43 pm (GMT) |
Nathan FosterRe: Which one,Hi Chris, from a 26" barrel, the 7mmRM will give you around 140fps greater velocity than either the .284 or .280 Remington. As you say, the 7mm RM will be a bit harder on the bore. Of the .284 and .280, you will find that the .280 might be an easier project regarding feeding from the magazine however, if you have your heart set on the .284, prior experimentation with case feeding will help identify what, if anything, needs to be done to ensure smooth feeding.800 yards is perfectly acceptable for the .284 and .280 regarding wound channel creation. The 7mm RM pushes excels at 1000 yards regarding the production of wide, fast bleeding, fast killing wounds. You certainly don't need a 7mm Practical unless you want to push ranges further than 1000 yards where every little bit of extra velocity helps. Ultimately, its a personal decision. I prefer the 7mm RM for its ability to render wide wounds at long ranges, along with excellent performance in cross winds. You may prefer something milder, something that will give a higher round count, but don't expect double the barrel life when it comes to precision long range shooting, you will find that you become fussier than before. If you were an F-Class shooter, you would not expect a .284 Win chambered barrel to last more than a year. There are things you can do with the .284 or .280, such as build a rifle at around 9.5lb and expect fairly moderate recoil which will allow for more flexible shooting technique. A trim 7mm RM loaded to full power unbraked/unsuppressed requires an extra degree of vigilance when it comes to shooting technique- however, good shooting habits must always be at the fore front of the long range hunters mind in any case. In some instances, it is better to download a 9.5lb 7mm RM to .280 Rem velocities (162gr at around 2900fps), in order to ensure better field accuracy from varying positions. A #2 contour 26" TF barrel will give you an all up weight of around 9.5lb, a #4 26" barrel will give around 10.5lb all up (Jap optics, picatinny rail and sling). Might pay to weigh your current rig exactly before you start out. The Bushnell 6500 are a reliable scope. They have one weakness, the dials are calibrated in such a way that each 4 clicks gives .9375" rather than 1MOA. To this extent, you will have to learn to become proficient at using Microsoft Excel to perform conversions. I prefer Sightron but I guess thats now a biased statement considering that I now sell the brand. Cheers, Nathan. |
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@ 04:11 pm (GMT) |
Chris RuggRe: Which one,Thanks for the quick reply, Recoil isnt an issue as I will put a break on it. The rem mag seems to win in all areas except for barrel life, and if need be i can buy factory ammo. My rifle with laminate stock yardage pro scope and supressor comes in at a shade under 13lbs(haha) but it is extremely stable shooting prone and have taken goats out to 400yards consistantly with 115grn bt's(before I had a dialable scope). I had an idea of less than 11 lbs for my build. Ive never had someone else shoot my rifle and I dont consider myself a good shooter but have achieved .9" groups with winchester supreme factory ammo. Do I need to blueprint this action if i can regularly get sub moa groups with the right ammo? And what are your thoughts on my original rebarrel choice of 6.5/06. Thanks again and sorry for the barrage of questions. First stop after rifle build hopefully will be your place to learn how to use it properly. |
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@ 05:12 pm (GMT) |
Nathan FosterRe: Which one,Ok, if you go with the 7mm RM, the bolt face will have to be opened up and a new NZ made Barnard (sako/Howa style) extractor fitted, so it will be blue printed anyway. You will be looking at $250 for the bolt face work/blue print and around $220 for the extractor job- which is a brilliant upgrade anyway.If you were to go with the .280, you could get away without the blue print, though it does pay to check for yourself that at the least, the locking lugs of the bolt are contacting the lug rebates evenly. The Remington's do tend to be pretty good in this regard, but it always pays to check before a build. The group size of .9 is a bit marginal as a guide- however, the .25-06 itself tends to be a bit finnicky so it is impossible to determine whether this group size is reflective of the bore or the action. The Laminate stock is a good unit. Surprisingly, its weight is nearly identical to the HS (Sendero) stock and the SPS stock, suffice to say, don't ever get rid of it. The somewhat triangular forend of your stock is a key factor in the design, making it very good to use in the field without it being too bulky. You would have great difficulty finding a better stock. If you hunt with a pointer dog, either adopt a brake with the ports angled 30 degrees forwards for partial recoil reduction- or don't get a brake. Dogs lose most of the hearing after about 3 shots, its cruel and it lasts for the rest of their lives. This just requires a little bit of planning and True-Flite can do angled ports if you want to hunt with a dog. The 6.5-06 is very good in that it puts a ceiling on recoil, a very mild cartridge. Nevertheless, it is good to have the wide range of bullet weights presented by the 7mm and .30 calibers, especially when using frangible, rather than controlled expanding projectiles on larger animals. People tend to argue calibers back and forwards relative to the merits of trajectory, few people take game weights into consideration yet this is a highly critical factor. You really have done well to hunt with a 13lb rig for so long. |
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