After figuring all this out, I have come to the conclusion that 26 grains of IMR will work beautifully for our project. It should project our slug forward somewhere between and feet per second at the muzzle.
So, we dial our powder measures in for 26 grains. While charging, I check the first five and verify the charge weight with our scales, then check every tenth one thereafter.
The 26 grains of will fill our case and this will be a compressed load when we put our slug on top and seat it. The final step of completing your loads is setting the slug. Slug selection is critical! Most factory sporting ammo is loaded in 55 grain bullets.
This works just dandy for sporting type rifles with a twist barrel. This rate varies from manufacturer to manufacturer between and The military switched to the M round which is 62 grains, which is longer, heavier, and of a higher ballistic coefficient. It gives better long range accuracy and higher hydrostatic shock values at extended ranges. By the time a bullet leaves the barrel at feet per second in a twist barrel, it is rotating at over 30, RPM.
It is literally flung apart by centrifugal force, thus, causing the keyholing and tumbling. We can also eliminate this problem by limiting our muzzle velocity read lighten our loads to less than feet per second when only lighter bullets are available. Fear not, for several bullet manufacturers have thought this out for us! Speer makes both 62 and 70 grain bullets for the service class. Hornady makes 68 and 75 grain bullets. This little jewel has solved the accuracy riddle in MY AR for me.
Yours may be different. All that remains to be done is the simple act of seating the bullet and crimping. Most dies do this in one step.
Adjusting this can be tricky. The maximum allowable Cartridge Overall Length or C. Too long a length and feed problems will result. We switch from our re-sizing die in our press to our seating die. Then we gently place a slug in the neck of the charged case. After this, it is a simple matter of pulling the lever and measuring the length of the newly formed cartridge! Too long? Screw the top insert in on the die.
Too short? Let the screw out. I believe rifles tend to use slow burning powders and pistols tend to be fast burning powders. So, gr in 1lb of powder will last you a long time in a pistol caliber I guess now all I need to do is find a powder that covers.
As grammaton76 said, you will need seperate powders. I'm a few reloading manuals I have, there are some pistol powders that can be used for.
I don't think I'll be trying it soon though. Next, remove the residual rim of brass around the pocket. Special tools are made just for this purpose.
Some swage, while others cut the pocket rim material out of the way. I generally prefer cutting the crimp away. Only trial and error can teach you just how much force is required to cleanly chamfer the pocket lip and not cut away too much of the case material. The three-blade cutter is permanently and precisely mounted on a steel base to assure proper depth and angle of the resulting chamfer.
Occasionally, I have experimented with varying bulletseating depth to achieve better groups in my bolt actions, but the really short throat of the Rem. However, my handloading mentor, John Redmon, who actually got me started in handloading the Rem. Redmon adjusts COL so his test rounds will just fit the chamber and then incrementally reseats each five-round batch 0.
Some of his best results were with handloads measuring up to 2. When loading for a 5. The load data chart shows that when shooting identical hand-loads in the bolt gun and the AR, the CZ generally did better than the Sun Devil SD with the lighter bullets, and the SD typically grouped the heavier bullets better.
Clearly, barrel twist rate and chamber throat dimensions do affect accuracy. Give a Gift Subscriber Services. See All Special Interest Magazines. All RifleShooter subscribers now have digital access to their magazine content. This means you have the option to read your magazine on most popular phones and tablets. To get started, click the link below to visit mymagnow. Get Digital Access. All Rifles Gear Learn News. Subscribe To The Magazine. More Articles From Reloading.
0コメント