The new Hornady FTB hollow base bullet is a slip fit bore size conical that is receiving great accuracy reports. They're now being sold at Walmart and they generally shoot as good or better than saboted bullets at 100 yards in a wider variety of rifles than most lead conicals which often have a more limited range of accuracy. They're too expensive to shoot for plinking but are recommended for hunting.
http://www.hornady.com/story.php?s=770
Also, the Powerbelt plastic skirted bullets are easier to load. The plastic skirt expands when fired. They come in many different bullet weights. The Powerbelts under 300 grains are said to perform best with lighter powder charges of about 80 grains because they expand very easily. For longer range hunting try the 300 grain Platniums which can be pushed faster, and there's a pure lead Powerbelt too.
Hornady and TC also make bore size lead conicals. Sometimes it helps to use an over powder wool wad to act like a gas check and seal the gases during ignition, moreso with the flat base lead conicals vs. those with a hollow base.
Wool wads and loose powder are things to experiment with.
http://www.cabelas.com/cabelas/en/t...at20712&parentType=category&parentId=cat20712
There's different powders to try including American Pioneer fffg and 777. The volume of the more potent 777 powder needs to be reduced by 15%. Using these powders in pellet form is not recommended. Buy it loose and experiment with measuring out the best charge.
Every bullet always needs to be seated consistently on top of the powder. While barrel heat can affect the point of bullet impact, the most important shot is the 1st one out of a cold clean barrel.
Consider loading a tight saboted bullet for the best first shot accuracy, and then reloading the fouled barrel with an easier loading conical for a quicker follow up shot.
The more powder used, the greater the amount of powder fouling residue left behind.
The new Blackhorn 209 powder shoots the cleanest of them all. Folks are getting up to 20 shots between swabbings and terrific accuracy. But the light fluffy Blackhorn 209 powder is nearly twice as expensive by weight.
There's also easier loading sabots which can be bought in bulk packages that will fit a variety of bullet diameters. Buying in bulk can save some money.
http://www.mmpsabots.com/
http://www.harvesterbullets.com/sabots.htm