Hotrod6.5
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Folks, this is a notice to my valued customers concerning the new 2024 rules. The new F-Class rules committee has determined that my felt lined top blocks are no longer legal for supporting the sides of the forearm for the 2024 NRA sanctioned matches.
Over the last year, I have been testing and developing a new design utilizing a new patent pending idea. Timing has been excellent as drawings were complete and production had already started on the new parts.. Filing the patent application was all that was needed so expediting that process was all that was holding things up. on 11-13-2023 the application was filed.
I call my newly designed blocks the T3 style which stands for Torque Taming Technology. they are offered in both felt lined and sand bag versions. These new blocks can be mounted directly to my top plates on my 5-Axis tops as well as my Raptors and T-Rex front rests.
therodzilla.com
therodzilla.com
BTW, the reason I still offer a felt version is for rim fire shooters as well as any type of shooting not regulated by the NRA as felt dampens harmonics very well and creates low drag. The faces of the felt blocks are parallel but canted to the right. this arrangement is designed to contact with the forearm on the top of the left and the bottom of the right side of the forearm. The felt block version has drilled and tapped holes under the felt and can be changed over to the sand bags by peeling off the felt and installing a pair of sand bag assemblies.
therodzilla.com
My T3 sand bag version has a couple new ideas. First of all my new sand bags are sand tubes running the length of the blocks. there is only one tube on each blocks. this provides support with very little drag. and yes they meet the following NRA rules:
Rule 3.4.1 (8) on page 68 of the NRA high power rule book states:
“The contents of front and rear bags will be dry, finely divided (less than 5mm/0.19”) granular substance such as, but not limited to, sand, gravel or grain, packed loosely enough so that the bag will be visibly deformable by pressure of the range officer’s fingers..”
Until now, top blocks, regardless of material only make contact at roughly the 3:00 and 9:00 positions. in order to limit the torque or twisting under recoil we only had the ability to apply more or less tension. But this only works up to a point as too much tension causes a lot of detrimental drag and in the extreme is illegal by rule since we have to be able to lift the rifle straight out of the rest.
My new design uses a vertical stagger of the sand bags which places two small horizontal points of contact at more of an 11:00 and 5:00 position with a typical F-Class stock with tall sides. My stainless steel sand bag carrier assemblies are slotted and therefore adjustable for height.
this all might seem strange until you understand torque, what causes it, and which direction it moves the rifle.
Another way to look at recoil is to actually think of recoil as two separate and distinctly different reactions. The opposite and equal reaction to a 184 grain bullet accelerating to 2800 fps in 30" against a stationary 22 lb rifle creates linear recoil or kick. The second reaction comes from spinning that same bullet up to a very high (clockwise from right hand twist) RPM which causes radial recoil or torque. By strategical placement of the sand bags (high on the left and low on the right) the gun is greatly blocked from counter clockwise rotation.
My website: https://therodzilla.com/ has more information and pictures. I currently have limited numbers of blocks but more coming out of machining so by the SWNs I should have my customers covered to meet the new rules.
Over the last year, I have been testing and developing a new design utilizing a new patent pending idea. Timing has been excellent as drawings were complete and production had already started on the new parts.. Filing the patent application was all that was needed so expediting that process was all that was holding things up. on 11-13-2023 the application was filed.
I call my newly designed blocks the T3 style which stands for Torque Taming Technology. they are offered in both felt lined and sand bag versions. These new blocks can be mounted directly to my top plates on my 5-Axis tops as well as my Raptors and T-Rex front rests.
T3 Sand Bag Top Blocks | Rodzilla
These new T3 (torque taming technology) aluminum top blocks feature 2.5" long NRA legal sand bags mounted to stainless steel carrier assemblies. These ...
therodzilla.com
T3 Felt Lined Top blocks | Rodzilla
These new T3 (torque taming technology) felt lined aluminum top blocks have parallel faces but are canted to the right, or clockwise while viewed from the s ...
therodzilla.com
BTW, the reason I still offer a felt version is for rim fire shooters as well as any type of shooting not regulated by the NRA as felt dampens harmonics very well and creates low drag. The faces of the felt blocks are parallel but canted to the right. this arrangement is designed to contact with the forearm on the top of the left and the bottom of the right side of the forearm. The felt block version has drilled and tapped holes under the felt and can be changed over to the sand bags by peeling off the felt and installing a pair of sand bag assemblies.
T3 Upper Sand Bag Assemblies | Rodzilla
This set of upper bags meet the new 2024 F-Open rules for sand bags used to guide the forearm. You can use these assemblies to update your current felt line ...
therodzilla.com
My T3 sand bag version has a couple new ideas. First of all my new sand bags are sand tubes running the length of the blocks. there is only one tube on each blocks. this provides support with very little drag. and yes they meet the following NRA rules:
Rule 3.4.1 (8) on page 68 of the NRA high power rule book states:
“The contents of front and rear bags will be dry, finely divided (less than 5mm/0.19”) granular substance such as, but not limited to, sand, gravel or grain, packed loosely enough so that the bag will be visibly deformable by pressure of the range officer’s fingers..”
Until now, top blocks, regardless of material only make contact at roughly the 3:00 and 9:00 positions. in order to limit the torque or twisting under recoil we only had the ability to apply more or less tension. But this only works up to a point as too much tension causes a lot of detrimental drag and in the extreme is illegal by rule since we have to be able to lift the rifle straight out of the rest.
My new design uses a vertical stagger of the sand bags which places two small horizontal points of contact at more of an 11:00 and 5:00 position with a typical F-Class stock with tall sides. My stainless steel sand bag carrier assemblies are slotted and therefore adjustable for height.
this all might seem strange until you understand torque, what causes it, and which direction it moves the rifle.
Newtons 3rd law of motion establishes that the right-hand spin of the bullet will always generate an equal but opposite reaction. namely, a counter clockwise (or left hand) rotation of the rifle. We refer to this as simply, torque and it happens simultaneously with linear recoil.Another way to look at recoil is to actually think of recoil as two separate and distinctly different reactions. The opposite and equal reaction to a 184 grain bullet accelerating to 2800 fps in 30" against a stationary 22 lb rifle creates linear recoil or kick. The second reaction comes from spinning that same bullet up to a very high (clockwise from right hand twist) RPM which causes radial recoil or torque. By strategical placement of the sand bags (high on the left and low on the right) the gun is greatly blocked from counter clockwise rotation.
My website: https://therodzilla.com/ has more information and pictures. I currently have limited numbers of blocks but more coming out of machining so by the SWNs I should have my customers covered to meet the new rules.
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