detachable mag accuracy?
- Thread starter Ratzilla
- Start date
No.
All magazines limit the COAL of the cartridges you can use and this means that the ammo may not be set to an optimal seating depth. If you are using factory ammo, it does not matter.
If you are loading your own ammo, and want best accuracy, I would bet you will find that the bullets like to be out further than mag feeding will allow and it will end up being a single shot.
All magazines limit the COAL of the cartridges you can use and this means that the ammo may not be set to an optimal seating depth. If you are using factory ammo, it does not matter.
If you are loading your own ammo, and want best accuracy, I would bet you will find that the bullets like to be out further than mag feeding will allow and it will end up being a single shot.
There are people that will tell you(and swear by it) that a single shot rifle is inherently more accurate because the action doesn't have the bottom cut out to accomodate the magazine. They believe that this extra metal in the action makes it stronger and stiffer(less fex in the action), resulting in a more accurate rifle. I briefly looked at this theory myself and found no empirical data that proves this or to disprove it.
It never made much sense to me so all I shoot is mag fed guns.
Ivo
It never made much sense to me so all I shoot is mag fed guns.
Ivo
I think a magazine does effect accuracy but so does a one piece or a two piece scope base. If you have a detachable mag rifle, the area that has been cut away from the reciever to accept the mag has taken some strength from the action and allows it to flex more that a solid bottom reciever. If you add a single piece scope base, even an alloy one, you can and will increase the stiffness of a partictular action and therefore increase. All things being equal, a solid bottom, single shot action is, more accurate than a magazine fed action whether detachable or fixed simply because it if less flexable.
Scott
Scott
hvmetalhead
Regular
- Location
- St. Paul AB
but the bullet is not traveling through the action, it's going through the barrel. but using you theory wouldnt you recoil reduction pad affect your accurcy as well?
Yes. - dan
The barrel and receiver both flex, not just the barrel (so does the stock, so yes, the type of pad will effect the shot). - dan
The bedding footprint in a precision rifle is is indeed an important contributor to precision/repeatability. but is is still possible to make a cut-away action shoot well. there are more than a few Remington 700 actions on F-Class and TR rifles out there and doing very well indeed.
The issue again is not strictly the presence of a magazine, but the optimal seating depth and the optimal bullets. Few VLD bullets mag-feed flawlessly, much less fit in many magazines - unless using a long-action with a short-action round.
Cut away actions are indeed much more flexible, and if you doubt it, try over-tightening your action screws: Mag feed actions can reach the point where you can't close the bolt because of action warping - it is easier than most people realize. If the stability of an action weren't an issue, barrel blocks and action sleeves would never be needed.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Sorry, but if you can flex your action in your stock by tightening the action screws, the stock/bedding and pillars are out of whack. There should be no way to bend an action just with action screw tension alone unless the stock/bedding is giving way too.
This IS a very common problem as many rifles suffer from poor or inadequate bedding/support. Most common in stocks that have inletting designed to not need any bedding - alum chassis.
The same idea of bending an action can also happen to a solid bottom rifle if the bedding is bad enough. Just put a solid action into the same stock as the 'bending' mag action and I bet you can create the same problem.
The amount of action flex during the firing process of most cartridges used in precision shooting would be best described as minimal. That is why we use recoil lugs and if concerned, use a thicker one.
An action WILL bend if the barrel hung off it is long/heavy enough AND there is no support given for the barrel. However, the average varmint contour 26" barrel isn't going to stress any modern action I am aware off.
If there is concern about action flex due to hanging a long and heavy barrel off the front, a barrel block is a great idea. However, similar support can be reached by bedding under the first 4 to 6" of barrel - similar in length to the block you would otherwise use.
The difference is you don't have the heat sink qualities of that block.
All you have to do is look at the variety of superbly accurate tactical mag fed rifles on this board. Many are as capable as any F class rifle for mechanical accuracy. They even feed their ammo from the mag.
If there is concern that a particular bullet would sit too far from the throat for best accuracy, just change the reamer specs when building the rifle.
Now you can have a mag fed ammo with the same bullet to rifling set up as any other rifle.
Just don't stick that bullet into the lands. Makes a mess if the bullet pulls out if you need to empty the chamber.
Or you can use a Savage center feed mag and push your bullets out to almost 3" OAL for a short action.
Here is a pic of my test target for my new Shilen 260AI barrel. The Savage action is mag fed.
Read all the details here
http://www.mysticprecision.com/htm/rifle.php#barrels2
Jerry
This IS a very common problem as many rifles suffer from poor or inadequate bedding/support. Most common in stocks that have inletting designed to not need any bedding - alum chassis.
The same idea of bending an action can also happen to a solid bottom rifle if the bedding is bad enough. Just put a solid action into the same stock as the 'bending' mag action and I bet you can create the same problem.
The amount of action flex during the firing process of most cartridges used in precision shooting would be best described as minimal. That is why we use recoil lugs and if concerned, use a thicker one.
An action WILL bend if the barrel hung off it is long/heavy enough AND there is no support given for the barrel. However, the average varmint contour 26" barrel isn't going to stress any modern action I am aware off.
If there is concern about action flex due to hanging a long and heavy barrel off the front, a barrel block is a great idea. However, similar support can be reached by bedding under the first 4 to 6" of barrel - similar in length to the block you would otherwise use.
The difference is you don't have the heat sink qualities of that block.
All you have to do is look at the variety of superbly accurate tactical mag fed rifles on this board. Many are as capable as any F class rifle for mechanical accuracy. They even feed their ammo from the mag.
If there is concern that a particular bullet would sit too far from the throat for best accuracy, just change the reamer specs when building the rifle.
Now you can have a mag fed ammo with the same bullet to rifling set up as any other rifle.
Just don't stick that bullet into the lands. Makes a mess if the bullet pulls out if you need to empty the chamber.
Or you can use a Savage center feed mag and push your bullets out to almost 3" OAL for a short action.
Here is a pic of my test target for my new Shilen 260AI barrel. The Savage action is mag fed.
Read all the details here
http://www.mysticprecision.com/htm/rifle.php#barrels2
Jerry
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