I have a 340 as well, the problem with pointed bullets is, it is pretty hard to seat them deep enough for the magazine. Mine shoots ONLY 170gr bullets, which is apparently due to the twist. I could relate a long story about my education in reloading due to this rifle, but I won't bore you with it. Suffice to say, the last few years, I have used nothing but cast bullets in it, and it shoots really good. I have shot several deer in Texas with it, and I think it's a great little rifle.