StaceyD, Maybe it's just me but I think "the question is not anwsired By motgar Date StaceyD, Let me see if I have this right. The original WPS was approved for production. The original WPS utilized a 60 degree double V groove weld. Assuming you have a qualified procedure as per Section 4, then Table 4. Assuming that your qualified procedure is a CJP. Since the original joint design, double V, was qualified then changing it to a double bevel is allowed.
Provided it meets the requirements of 3. In other words, a change in joint design is allowed as long as it is to a pre qualifed one. However there is no joint designation for the 30 degree double bevel SAW joint. Next in the process is the deepening of the cut.
In this stage, the tool support wedge forces the cutting tool to increase its depth of cut. The feed screw, having been previously adjusted to control the depth of cut, advances automatically to the next cutting depth increment. The process repeats making the grooves progressively deeper until all four grooves have been cut to the required depth.
To keep the cutting tool and barrel cool, oil is pumped through the rifling rod and into the rifling head. Keeping the cutter free of chips from the material removed is important. A small motorized brush attachment cleans the cutting tool, removing the chips of cut away barrel material. The M barrel drawing specifies a groove depth of.
With all this speed and sophistication, cutting four grooves, each one only. Simply because making a deeper cut creates a larger chip that can potentially clog the cutting surface resulting in a rough surface finish or a broken cutter.
This limitation means that cutting a single groove to the specified depth of. Just to make a single 4-groove barrel took cutting strokes and return strokes. In the spring of , there was a lot of incentive in reducing the number of grooves to two. There would no longer be four small lands in the barrel, all four totaling to about 0. Now there were two huge ones, each one almost 0. Would these two wide lands create so much additional bore friction that the projectile would be significantly slowed?
Nobody knew for sure. Lower velocity and increased pressure were a concern. Firearm experts knows that after primer ignition, any delay in getting that projectile moving causes the chamber pressure to rise quickly - sometimes to dangerous levels.
Would the wider lands make a serious increase in chamber pressure? How much additional pressure could be expected? Would the barrel material be able to withstand the amount of increased pressure?
Accuracy and barrel life were also a consideration. Would the rifle be as accurate with two grooves as it was with four?
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Soulful pop-rock from this Washington crew, that splits the difference between pop sparkle and proggy structures. All variants are made in lever action, include a black walnut, straight grip stock, and except for the CL, include adjustable semi-buckhorn folding rear and ramp front sights. The Model CL features marble adjustable, semi-buckhorn rear and marble carbine front sights.
The Model SS, caliber. The Model M , caliber. Approximately 12, made. The Model P — , caliber. However, shortly after announcing its release, Marlin suspended production indefinitely. It was finally released in along with the SBL variant chambered in. The Model CB, in. There are also several "Limited Edition" Marlin rifles which are Stainless Steel with grey, laminated furniture and "tru-glo" sights. They were pre-drilled for a scope base and included a solid, rubber recoil pad. They are considered very collectible as only of each caliber were made.Jan 03, · Featuring Livin' Large Groove Corporation - Passion E.P. Label:6 x 6 Records.