bfr vs. freedom arms chamber depth

[bobke]

forgive my having to ask, but this info's generally not posted except by actual users. is there a difference in the depth of chambers between a bfr and fa 454 casull or are both run to an saami standard? reason for asking related to using cast swc with broad front driving band, such as nei 310.451, 270saa and others.
had a casull with both 454 and 45 colt cylinders long time back and could use 45 colt brass in casull cylinder with above bullets, but not the same when using 454 brass. my casull also had very tight chamber throats, actually .453 bore and .451 throats, but again, this was a very long time ago and finally did shoot after reaming the throats .453.

trying to do my homework before making a buying decision. appreciate any feedback possible.

[44man]

The BFR cylinder is 1.855" long. Case rims are recessed. This should leave you about .475" length for a boolit nose.
I used my .475 to get the measurements, I don't have a .454 but have brass here so I stuck one in and measured to the case mouth.
I think any .45 boolit made will fit the BFR and still leave room.

[bobke]

to any of you who have a 454 casull bfr, how does the 45 colt shoot in the 454 chamber? does it do any better or worse with bullets with broad front driving bands, such as 270saa or 310.451 nei, when shooting colt brass in casull chamber? with the recessed rim in cylinder and overall cylinder length, any accuracy issues or limitations with either casull brass or colt brass? getting down to choosing a caliber in a bfr, am highcentered between 454 and shooting colt brass(have 1000's) or starting fresh with 475/480. based on 44mans comments regarding twist rate, i've decided bfr is the way to go, it's down now to caliber. will likely go with consensus opinion generated here. thanks for any feedback.
b

[44man]

to any of you who have a 454 casull bfr, how does the 45 colt shoot in the 454 chamber? does it do any better or worse with bullets with broad front driving bands, such as 270saa or 310.451 nei, when shooting colt brass in casull chamber? with the recessed rim in cylinder and overall cylinder length, any accuracy issues or limitations with either casull brass or colt brass? getting down to choosing a caliber in a bfr, am highcentered between 454 and shooting colt brass(have 1000's) or starting fresh with 475/480. based on 44mans comments regarding twist rate, i've decided bfr is the way to go, it's down now to caliber. will likely go with consensus opinion generated here. thanks for any feedback.
b
In my opinion short cases never shoot up to snuff. .38 in .357, .44 SP in .44 mag, .45 in the .454 or .480 in the .475.
The .454 has a problem with the SR primer igniting powder unless the charge of H110 or 296 is at max or above. I feel it is a poor choice in any gun. I have solved the problem by cutting down .460 brass and using the LP mag primer. It then becomes a super caliber.
I fell in love with the BFR .475. SOOOO easy to work with and it will shoot anything from 400 to 460 gr.