i would go with the 50 definetly.

I know I said 50cal but I just got done reading an article titled 45cal vs 50cal. They seem to say the 45cal for many reasons. But I still say 50cal. If you still cant decide I might type that article on here later today or tomarrow.

I think the sales numbers for the .45 (and the .54 as well) tell the story. The .50 caliber is starting to really dominate the muzzleloading rifle field. And if you want to shoot a lighter faster bullet, the 200 gain Shockwave is a .40 caliber bulletthat shoots very well out of a .50 caliber gun.

have both ,just bought a .45 since it was on sale. I checked the ballistics and here are both using a 240 grain bullet and 150 grains of pyro.

100 yds

.45= 0 drop , 1945ft sec , 2016 ft lbs

.50= 0 drop , 1671ft sec , 1488 ft lbs

200 yds

.45= -7.72 drop , 1735ft sec , 1605 ft lbs

.50= -11 drop , 1491ft sec , 1185 ft lbs

Seems you gain a wider variety of accesories and .05 of bullet diameter with the .50 , the ballistic data says go for the .45. Havent gotten a scope for my new .45 yet , so we'll see how she shoots when I do. Keep ya posted

i haveeach(45&50) and they both kill good. If you can put the bullet in the kill zone dead deer with either cal. I like hunting with my 50's though but no good reason except i have done more shooting with the 50 and feel more secure with the 50. By the way i am looking for a used tc senica in good condition if anyone knows of one to be had.