Pressure data was estimated from relevant Dupont Reloader Guide data for IMR 4320 powder used in 308 WIN cartridges:īullet Charge (grs) Velocity (fps) Chamber pressure (cup) Nosler Reloading Guide number 4 provides no pressure data. The velocity is not expected to be too far off from that of the Nosler load of the same powder and weight and using Nosler 125 gr. Pressure and velocity data for this load were not measured and remain accordingly unknown.
Bullet seating at cannelure but uncrimped. 123 grs Winchester FMJ bullet made for 7.62 x 39 (based on available information the diameter of Russian 7.62 x 39 bullets should actually be 0.311 and not 0.308 inches, on my caliper the Winchester 123 gr. Winchester 308 WIN brass and Winchester Large Rifle primerĢ. Solid Base Ballistic Tip (green) bullet in 308 WIN and with IMR 4320. The overall recipe was based on a recommendation for medium velocity load by the Nosler Reloading Guide for its 125 gr. At the time it was the only powder I have left in sufficient amount for about 50 rounds, to make the pain of reloading worth the effort. The choice of IMR 4320 is a practical one. I was testing a new load using commercial Winchester 308 WIN brass and 123 grains Winchester FMJ bullet, actually made for 7.62 x 39 cartridges. Note the dark smudge in the inletted wood where the bolt handle comes to rest in close position. Obviously, bending a Mauser bolt for scope also requires inletting the stock as shown below. After a couple of years of frustration, I decided to take the torch to it, bending the knob a bit away from the scope to make life more bearable at the range.
There was only one problem, the handle hugged the scope so close making it difficult to retract and close efficiently for a second shot. In the open position the handle would hug the scope line very nicely. The local gunsmith did a great job aesthetically, and his finished product looked much better than what you are seeing in the picture. The original curved down bolt handle had to be bent to accommodate the variable 3-9X Bushnell scope. Using an RCBS pull gauge the trigger breaks between 56 to 64 ounces over 3 trials, thus averaging at less than 4 lbs.
Luckily, the gun was always pointed down range after loading and I have the range and NRA safety rules to thank for. What at first appeared to be a liability turned later into an advantage when I got into higher accuracy target shooting at long range (over 200 yds). In the first few years owning the rifle I was often taken aback, even frightened by a couple of cases of unintentional premature firing because of the light pull. The trigger weight on this particular specimen of M1916 is a delight in contrast to most expectations for military Mausers, i.e.
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