I have been shooting 58 gr. Vmax's out of my .243 and been pretty happy with them. I thought they might be coming out some what fast. So I used my chrono to see how fast. They average about 3600 fps out of a 26 inch barrel.
Is this too fast? Can these burn up my barrel faster by pushing them this fast? If you think I should stick with these, can I rely on these past 4-500 yards?
Barrel heat and lack of cleaning contribute more to short barrel life than velocity of the bullet IMO.
a decent barrel should give you at least a few thousand rounds at 3600'/sec.
don't let it get so hot that you cant hold onto it, and try to clean good at least every 50 rounds. I did that with my old 220 Swift and got somewhere between 4500 and 5000 rounds through it before it needed another barrel. Most of it's bullets were going around 3600'/sec.
You may have to chase the throat as it erodes, but that will happen with any velocity. I've heard and read that 243's have a short throat life due to the case design.? I don't have personal experience on that matter however.
If your shooting a factory rem barrel its a 9.25 twist, way to fast for 55 and 58 grain bullets, they will shoot just fine and can be pushed to 4k fps but were designed to go through a 14 twist and I would only use them on pest to 500 yrds. I load 80grn nbt's in my rem 243 at 3420 and 95s at3140 and they do really well. A 243 will last quite a while but it is true that they are a little hard on the throat but its not because of the velocity, its the short neck.
Thanks for the information fellows. I usually don't let my barrels get to hot. My dad taught a trick when I was young. If you can hold your hand on the barrel for 15 seconds, it's good to shot. But I wait alittle longer. Plus I watch my round count during shooting strings. With my 243 and under calibers, I shoot 5 round strings. With my 308 it's 3 round strings. And I take my time between shots.
I have also been playing with 87 gr. Vmax's. Thought they would buck the wind better at longer ranges.
I started out with the lower weight projectiles in my .243 also. They are fast and quiet terminal but I get a higher percentage of hits with the heavy weight (85-95gn) pills at longer ranges. They start out a little slower but still seem to out run "ye ole groundhog". I think they are superior over the light pills. JohnnyK.