1 of the things i might have MISSED (or really isn't here in the pages of post) is the LEAD-IN and how critical it is to accuracy. Being able to CAST a bullet is one thing but to have it be PERFECT inside a barrel that was designed and CUT to shoot STUBBY pellets is NOT FAIR or right and will NOT yield good results.Usually when this happens, the twist rate or speed or weight of slug has little to do with the overall bigger picture but more of the fact that the bullet itself was not supposed to be crammed or jumped into the barrels lead in. It was meant for a pellet which has a much shorter bearing surface overall length. No one seems to factor this. LEAD IN. Its real.I just did a test with some 98.5-99.0 gr 7mm Bob Stern Boat Tails which are stubby compared to the 130-135 gr Bullets that the llead in was cut for. This stubby bullet has to JUMP. Jump into the rifling is what im saying. So i took it upon myself to start the bullet into the beginning of the rifling vs letting the bullet JUMP forward via the bolt probe itself and found, the JUMP was the most accurate. Seating the bullets into the rifling did not produce good groups. This is essentially what you guys are doing when you cram a bullet into a bore that's lead was cut for pellets (read shorter OAL vs LONGER OAL).This is why its hard to go from pellets to bullets in the same barrel gun and expect both to be darned accurate.A 43 gr Eun Jin and a 70 gr Lyman bullet are totally different in length and tbe fitment of both inside the barrels breech is also very different. Therefore, accuracy will be different.....................