TheDude wrote:Home cast 525grain projectiles over 68 grains of 2F black powder
Nice just curious, how do they print on targets? Nice neat little circles? Or are there ever signs of yawing?
TheDude wrote:Home cast 525grain projectiles over 68 grains of 2F black powder
Gamerancher wrote:Fat (45 cal) heavy (500gr + ) slow moving ( sub 1500f/s M.V ) round nosed lead bullets retain stability like you wouldn't believe. We shoot these out to 1000+yards and it is very rare to see one keyhole a paper target. I shoot a .45-90 CPA Stevens that has a 1 in 18 twist barrel (tight by black-powder standards) and it is sometimes hard to find the holes as they go through so straight. B.C's on low velocity bullets are more in relation to the centre of gravity of the bullet rather than shape. Blunt "Creedmoor" style bullets with good diameter /length ratio have better B.C's than bullets with a long tapered nose/point.
Gamerancher wrote:As a "for instance" load/trajectory scenario, I load 170gr cast bullets in my .30/30's with 17gr of 2207 which is giving me a M.V of around 16/1700 f/s.
Shooting this load at lever action silhouette targets just using the standard barrel sights on a 20" barreled Winchester '94, I use the first notch for the chickens @ 50m, up one notch for pigs @ 100m, up another notch for turkeys @ 150m, up one more notch (top one) for 200m rams.
This load takes down the rams no problem which means it has more energy @ 200m than a .243W shooting 105gr bullets has @ 500m, as the .243W doesn't take down the same rams at that distance.
Gamerancher wrote:I only use the .30-30 for the lever gun silhouette, reduced loads are a lot more pleasant to shoot, especially at the end of a match when you've put around 100 shots down range for the day. Less recoil also tends to give me better accuracy as the rifle is not beating you up all day and your follow through is more consistent. These rifles only weigh 6 to 7 lbs. I shoot lead bullets as I cast my own which keeps the cost of shooting down to buggery.
With regards accuracy, you have to remember these rifles were designed around black-powder loading's ( velocities ) of the day.
As for the argument for flatter trajectory, I don't think going up three notches on a barrel sight from 50 to 200m is too bad. I can't remember off the top of my head how much it is with the Williams sights on the other ones. I had a mate bring his rifle out to the farm with factory rounds ( Federal) and was able to hit the 200m target at the fist notch on the standard sights.Sort of debunks the old theory that .30-30's are "only a 100 yard round".
I've watched and shot beside others who go with the "load her up and don't adjust" theory, let's just say I'm glad it's them and not me shooting their rifles. They also tend to be the ones with the rifles that break down or have to constantly be tightening action screws. ( Marlins are bad for this). Not having a dig at yours, just what happens on the line. Lever guns have lots of moving parts held together with small screws holding by just a couple of threads. They may have improved barrel steel to handle modern pressures but they're still built on the same basic action.
<<Genesis93>> wrote:So.... this thread is now 2 pages long..... just wondering if anyone has suggested the 'ballistic arc'... is known as the 'trajectory'.... just sayyin.
<<Genesis93>> wrote:ok... so I 'sound' older than I am then??
Take it easy, you're getting yourself into a fizzle...