wolfe28
Member
What is an acceptable amount of variation in projectile weight when trying to work up the most accurate load for a particular gun?
I am currently working up loads for my 22 Hornet, using winchester brass (new, unfired), winchester small rifle primers, Lil-Gun powder and Hornady 40 Grain v-max projectiles. Max load (per Hogdon's website) is 13 grains of Lil-gun for both 35 and 45 grain projectiles. I started at 11.9 and have worked up in 0.2 grain increments to 12.7 so far. 100 yard rested groups went from about 9 inches with the 11.9 grain charge to about 2.5 with the 12.7 grain charge.
So back to the original question. If I weigh the projectiles I'm using, there is going to be some variation, but what is acceptable, and what isn't? Variation of 1-2 grains in projectile weight for this loading means a variation of 2.5 to 5 percent, which, I'm thinking, will throw off my accuracy and not allow me to get a fairly tight group (I'll be very happy with something under 1 inch at 100 yards). Or, am I letting my scientific analretentiveness get the better of me?
I am currently working up loads for my 22 Hornet, using winchester brass (new, unfired), winchester small rifle primers, Lil-Gun powder and Hornady 40 Grain v-max projectiles. Max load (per Hogdon's website) is 13 grains of Lil-gun for both 35 and 45 grain projectiles. I started at 11.9 and have worked up in 0.2 grain increments to 12.7 so far. 100 yard rested groups went from about 9 inches with the 11.9 grain charge to about 2.5 with the 12.7 grain charge.
So back to the original question. If I weigh the projectiles I'm using, there is going to be some variation, but what is acceptable, and what isn't? Variation of 1-2 grains in projectile weight for this loading means a variation of 2.5 to 5 percent, which, I'm thinking, will throw off my accuracy and not allow me to get a fairly tight group (I'll be very happy with something under 1 inch at 100 yards). Or, am I letting my scientific analretentiveness get the better of me?