I have two Barrel Bedding V-Block designs for my APS rifles. One is the Heavy V-Block and the other is the Sporter V-Block.
The Sporter V-Block is a much trimmer design compared to the Heavy V-Block. This was designed for the sole purpose of obtaining V-Block consistancy but in a rifle that weights in the 12 lb range. This is not exactly light weight but compared to any other Barrel Blocked rifle design this is about 50% lighter on average.
This is the top view of a sporter V-block after machining and ready to be bedded into the stock. The stock used for these rifles is the McMillan A-5. As you can see the block needs to be tapered to allow for the taper in the stock forend. This makes the Sporter V-Block a bit more time consuming to build.
This is the bottom view of the same V-block. YOu can again see the taper and all of the relief grooves milled into the block for some serious grip when filled and surrounded by bedding compound. You can also see the two 1/4-28 tpi mounting bolts and their ports in this view.
This pic shows the block secured to the specially contoured APS Sporter V-Block barrel made exclusively by Lilja rifle barrels.
This pic shows the V-Block after the stock has been inletted. The bolt ports still need to be milled into the V-Block. The only thing that touched between the stock and the barreled action is the section of barrel that contacts the V-Block and the conventional positioned recoil lug.
These are pics of a finished APS Sporter V-Block rifle. As you can see there is really no dramatic external signs that this is anything but a conventional designed rifle. Other then the extended full diameter barrel shank. This allows the scope to be mounted in a conventional, low position for best shooting comfort. Also, just makes the rifle look better in my opinion.
The sporter V-Blocks are generally 7" long and have two mounting bolts that are drilled and tapped directly into the barrel.
The APS Heavy V-Block system is a bit differnet. Its designed for any barrel length and weight that you can think up as long as the stock will accept the barrel size. Both V-Block designs are basically the same width as the barrels used.
More precisely, they are the same width as the stocks barrel channel so roughly 50 to 80 thou larger then the barrel diameter in most cases.
The Heavy V-Blocks will range from a 7" long 2 bolt design up to the very large 9" and 10" 3 bolt designs. The barrel weight and diameter used determine which is to be used for each project.
This pic shows a 9" V-Block bedded into a McMillan MBR Tooley stock which is my preferred stock for this rifle design in a 25 to 30 lb rifle. This stock offers plenty of forend depth to allow a very stable V-Block to be used.
This pic shows the underside of the same stock showing the mounting ports. This stock has not been finished yet. After curing, stainless steel port bushings will be machined to fill the ports giving it a very finished look.
Here is a finished stock with the port bushings installed, much cleaner look to the finished product.
This is a pic of a finished Heavy V-Block using a Rem 700 receiver and a 34.5" 1.350" diameter straight cylinder barrel. Without the V-Block this receiver would not handle a barrel of this size but with the V-Block the receiver is totally freefloated turning it into a stress free componant of the rifle bedding system.
Again, notice the ability to mount the scope low over the receiver, this is a bonus of this design. Also keeps the traditional lines of the rifle intact as well.
The theory behind the APS V-Block designs is to offer a traditional appearing rifle with the ability to mount scopes in traditional locations and also allowing easily available stocks and barrels to be used without exotic barrel contours and relocation recoil lugs and such.
Receivers are totally free floated as are barrels ahead of the V-Blocks. If you have a 35" barrel that is 1.350" in diameter sitting in a 9" V-block, basically you have a barrel with the stiffness and rigidity of a 26" barrel that is 1.350" in diameter, EXTREMELY STIFF!!! This is because that is the amount of barrel that is not solidly supported by the V-Block.
The receivers are non stressed so receivers such as Rem 700, Savage 110s, Sakos, Win M70s and really any other conventional receiver can be used with a very heavy large barrel in the Heavy V-Block design, or they can also offer extreme performance in a lighter weight system with the Sporter V-Block.
These McMillan stock are not the only ones that can be used with this design. There must be sufficent forend mass though to accept the V-Blocks.
Here is an example of a Heavy V-Block based on a Rem 700, 1.250" straight cylinder 30" Lilja using a Holland Signature Heavy Varmint Laminated wood stock. These stocks also work extremely well for these rifles.
For extreme consistancy the V-Block rifles are very hard to beat, especially if you want to use a conventional receiver with a very heavy or long barrel. That is not to say they do not work well with custom receivers either because they certainly do.