I have a factory 14" Hunter barrel in both 35 Remington, & in 45-70... for many years, the 45-70 was my main deer hunting rig... with a 2-7X Burris Posi Lok scope, 3 leaf clover shots off a field rest, are the norm at 75 yards...
still with warm handloads, I think my unported 375 Winchester barrel has the most bite...
I switched where I hunt & the deer are more mobile, & closer, & I switched my deer gun to a 10" 45 Colt barrel ( not the 45 Colt / .410 ) & it's equiped with a Williams fiber optic ghost ring set up, that I really like...
my newest 2 barrels were custom made by my retired machinist buddy... he machines threaded barrel reciever blocks, & threads in barrels to get correct headspace... one is a faster twist ( 1 in 9" twist ) 223 carbine barrel, & one is is a 10" - 5.7 X 28 barrel
I'd actually like my next barrel to be a 50-70 barrel, to go with my Martini single shot rifle... unfortunately my buddy's block design won't allow threading a bore as large as 50 cal... so I'll have to buy that one from another source