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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Allen Magnum and APS rifle design finally ready to test....
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<blockquote data-quote="Fiftydriver" data-source="post: 97334" data-attributes="member: 10"><p>Roy,</p><p></p><p>Yes this system will offer 2K potential I am quite confident. I have tested my heavy sporter in 270 AM out to 2200 yards and in good conditions it was consitantly grouping in the 1 moa range at this distance. Still, thats just shy of 2 foot groups but at that range I was happy.</p><p></p><p>This rifle will do better.</p><p></p><p>The V-Block is bedded permanently into the stock. If you look at the pics of the V-Block you will see the releif groove milled into the bottom and sides of the block. These are basically to increase the bond strength to the stock when bedded and all these grooves are filled with bedding compound. There are similiar but smaller cuts in the inside of the stock as well.</p><p></p><p>There has to be a recoil lug used with my design. The reason there is no lug used with the large clamp on block designs is because the block hsa enough clamping strength to securely hold the barrel under recoil and then the block itself is used for the purpose of a recoil lug.</p><p></p><p>My design is totally differnet.</p><p></p><p>While the barrel is solidly held down into the V-block via two 1/4-28 bolt that are threaded directly into the barrel, this is not a strong enough hold to eliminate the need for a recoil lug. </p><p></p><p>In fact, the two mounting bolts are totally floated in the V-Block and seat on 82 degree counter sinks. The only thing that contacts is the tapered head of the bolt against the bottom of the V-Block and the threads in the barrel.</p><p></p><p>As such, if there was no recoil lug, the recoil energy would easily be enough to shift the barreled receiver back in the V-Block until the bolts were binding agains the block. At which point, shearing of the bolts would probably be soon to come.</p><p></p><p>Using a conventional Recoil lug prevents this issue so using them together offers the advantages of the clamp on block design but in a package that is conventional in appearance and allows much slimmer rifles and conventional scope mounting heights.</p><p></p><p>Some will say threading the bolts directly in the barrel is a bad idea. I have yet to see any accuracy issues doing this if done properly.</p><p></p><p>Mr. Holland has been building rifles using a similiar design for many years with no problems. My design is similiar but totally unique in comparision to his design. Same ideas used for the design though.</p><p></p><p>If we get the ballistic numbers we are prediction, at 2000 yards, and the 185 gr ULD RBBT will still be climping along at nearly 1600 fps and packing just over 1000 ft/lbs of energy. Thats plenty for deer size game give a quality shot placement to the vitals.</p><p></p><p>Now I am not saying this is a 2000 yard deer rifle, just showing the numbers that we are hoping to get out of this rifle.</p><p></p><p>More realistic is 1000 yard deer hunting. At this point we will be looking at 2330 fps and +2200 ft/lbs of energy. Not to bad for a 270!!!</p><p></p><p>We will see what actually happens when the bullets get in the air though!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 97334, member: 10"] Roy, Yes this system will offer 2K potential I am quite confident. I have tested my heavy sporter in 270 AM out to 2200 yards and in good conditions it was consitantly grouping in the 1 moa range at this distance. Still, thats just shy of 2 foot groups but at that range I was happy. This rifle will do better. The V-Block is bedded permanently into the stock. If you look at the pics of the V-Block you will see the releif groove milled into the bottom and sides of the block. These are basically to increase the bond strength to the stock when bedded and all these grooves are filled with bedding compound. There are similiar but smaller cuts in the inside of the stock as well. There has to be a recoil lug used with my design. The reason there is no lug used with the large clamp on block designs is because the block hsa enough clamping strength to securely hold the barrel under recoil and then the block itself is used for the purpose of a recoil lug. My design is totally differnet. While the barrel is solidly held down into the V-block via two 1/4-28 bolt that are threaded directly into the barrel, this is not a strong enough hold to eliminate the need for a recoil lug. In fact, the two mounting bolts are totally floated in the V-Block and seat on 82 degree counter sinks. The only thing that contacts is the tapered head of the bolt against the bottom of the V-Block and the threads in the barrel. As such, if there was no recoil lug, the recoil energy would easily be enough to shift the barreled receiver back in the V-Block until the bolts were binding agains the block. At which point, shearing of the bolts would probably be soon to come. Using a conventional Recoil lug prevents this issue so using them together offers the advantages of the clamp on block design but in a package that is conventional in appearance and allows much slimmer rifles and conventional scope mounting heights. Some will say threading the bolts directly in the barrel is a bad idea. I have yet to see any accuracy issues doing this if done properly. Mr. Holland has been building rifles using a similiar design for many years with no problems. My design is similiar but totally unique in comparision to his design. Same ideas used for the design though. If we get the ballistic numbers we are prediction, at 2000 yards, and the 185 gr ULD RBBT will still be climping along at nearly 1600 fps and packing just over 1000 ft/lbs of energy. Thats plenty for deer size game give a quality shot placement to the vitals. Now I am not saying this is a 2000 yard deer rifle, just showing the numbers that we are hoping to get out of this rifle. More realistic is 1000 yard deer hunting. At this point we will be looking at 2330 fps and +2200 ft/lbs of energy. Not to bad for a 270!!! We will see what actually happens when the bullets get in the air though!! Kirby Allen(50) [/QUOTE]
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New Allen Magnum and APS rifle design finally ready to test....
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