C.B.W.

You are not going to beat your D.C. target grouping using one pellet grain size (100). I'm guessing you no longer want to pay close to a dollar a bullet & aren't willing to shell-out around $100 to get a much better deal on D.C. discounted bulk prices... am I correct? Copper Powerbelts (preferred ones) aren't much cheaper in area stores.... right around 70 cents for copper hollow points (my favorite).

Even with the Powerbelts, there's no guarantee of D.C-like shot groups. You may need to add 30-grain pellets to give you more options on narrowing range groups. You also may need to change to Pyrodex to conquer that task. Every rifle is a different animal because bore sizes vary E-Bolt to E-Bolt.

I suggest FFF loose 777 to hone-in on group sizes. Since both bullets you mentioned are 'easy loaders" in most bores, I can give you a cheap bullet alternative that performs real well on game. It comes in both hollow-points & soft points (my favorite). They rival the XTP in pistol bullet popularity & load easier than most others. All you need to do is pick out what size you want.

I suggest starting-off with the 240 grain ... you can also purchase 50-pks of plastic sabots from this site to save on shipping both items at the same time (or) maybe a store close-by to you sells these Speers in their reloading aisle - then go the muzzleloading aisle & buy either
1)Harvester
2)MMP
3)T/C
plastic sabots.... in that order.

Your per-shot costs are now under 25 cents & performance levels "could" rival/ come within an inch of the D.Cs. Main thing is either changing to loose powder or adding 30-grain pellets to the mix.

Ooops... forgot to mention this safety comment.
Do not ever point that E-Bolt in a non-safe direction upon loading it or after loading it. That model has big-time issues with triggers/open bolts that causes it to fire without warning signs. Consider selling it/retiring it... then go T/C or Knight shopping right here. Just start another thread asking for help.

Speer Gold Dot Bullets

Other Speer Gold Dot Bullet Options

In 44/50 plastic sabots, I prefer the T/Cs over the Harvesters. In 45/50s, the Harvesters are the best (in my opinion).

T/C Plastic Sabots (50-pk)