I would like to get a powerfully built double to handle loads like the Buffalo Bore +P loads like TSX 300gr at 2200 fps. I m looking for the most powerful double to use for Ohio deer season, which requires straight wall sided cartridges. Any ideas or suggestions?

Baikal and Sabatti and Pedersoli within their pressure limitations and regulation accuracy. The three here will drop any white tail on earth with a lot less velocity. Any of the three will work but may not for the hot loads made for a Ruger Number 1 such as the BB +P loads.
That said, I have no experience with hot loads for doubles but all doubles are made (or should be made) for accuracy as regulated with a proper load. Exceed the pressure and accuracy will fail (cross fire if too fast) and rifle failure may result.
Another possibility is to have a double made (or at least custom regulated) for your choice of load within the safe pressure of whatever rifle you wish to use.
Also, I believe the longer the brass case is the same velocity can be attained with lower pressure. So, maybe take your .45-70 and lengthen the chamber to .45-120 but still shoot your .45-70 load from it.
Just some random thoughts. Perhaps MAC can chime is as he has forgotten more about doubles than I will ever know.
Cheers,
Cal
PS. Or have a low dollar double built on a shotgun action with lots of steel such as a 10-bore. Buckstix can asset here as he is building a .700 nitro on a 10 gauge frame. Plenty of steel around a hot .45-70 I would guess.

PPS. Why didn't I include this above. For the time and money spent on a build, just get a vintage double from the UK for a .450, .500, or a .577 black powder express. Straight-walled, for more power than a .45-70. Hell, a 12-bore, 10-bore, 8-bore, 4-bore, are also good choices.

LR3 Get thee to the Cabelas in Wheeling. They have a 45-70 Sabatti that will handle that load, or if you reload,I have the same gun and it will regulate with 300 gr. JHP at 2150 with 49 gr. IMR-4198 and cases drop right out.

Great thanks for the advice Cal and Quartermain. Might just take a drive.

Have you ever heard of a 450 Nitro?

Per the Ohio site:
http://wildlife.ohiodnr.gov/hu...-hunting-regulations

These are your options:

"Straight-walled cartridge rifles in the following calibers: .357 Magnum, .357 Maximum, .38 Special, .375 Super Magnum, .375 Winchester, .38-55, .41 Long Colt, .41 Magnum, .44 Special, .44 Magnum, .444 Marlin, .45 ACP, .45 Colt, .45 Long Colt, .45 Winchester Magnum, .45 Smith & Wesson, .450 Marlin, .454 Casull, .460 Smith & Wesson, .45-70, .45-90, .45-110, .475 Linebaugh, .50-70, .50-90, .50-100, .50-110, and .500 Smith & Wesson."

I would go with the 50-110 built on a good 10ga double action.
Or, for that matter, just buy a heavy Spanish 10ga double, cut the barrels back, and re-regulate it if necessary as a smooth bore roundball gun. No deer in Ohio or anywhere else on Earth, will know what hit it!

LR3 If you do pick up that Sabatti from Cabelas let me know. Mine shoots the Hornady 300 gr. JHP right at 2150 with 49 gr. IMR-4298 and is listed at only 24000 CUP in the Lyman manual. This is a safe load in this gun easily as it is supposedly proofed at around 32000 IIRC. Anyhoo, mine will print this load bore distance apart at 50 yds, and the one at Cabelas has a 3 leaf rear sight, which is not normally on this model. The gent that owned it must have added the front and rear to look more like a traditional double. I even looked at the case it comes in-he even added other height front sights in both bead and fiber optic from Sabatti, so you can taylor your elevation. I'll bet its a shooter with that kind of forethought. The gun itself is pristine-looks like brand new & tight action etc.

I have a big Spanish made 10ga. Double which would like to make it into a .775 caliber would it be large enough? Ed Hubel and I have the same Spanish made shotgun which was imported under the name Tradewind.That caliber
Or a 10ga. Slugun rifled.. Can you help?

Thanks gents for the additional input. Sam thanks for the question. Always enjoined you posts... Good to see them again and hope to see more on your .577 testing. Unfortunately we are not allowed to use a 450 as you see from above. I have 70% Woodleigh loads for my .577 that I would love to use but not allowed yet. I looked at the Sabatti but it's a single trigger and wanted also to practice
with it for my buffalo hunt in August in
Namibia. I have a 20 bore slug gun that is very accurate but not much knock down strength beyond 100 yds.

LR3
I have a Chapuis 45-70 double for sale that has been re-regulated to shoot a 400 grain bullet at about 1800 fps. Using the 75% load rule, 300 grain bullets are possible. It's more expensing than
the other 3 modern options Cal mentioned. If your interested, PM your email address. I'll send pictures and information on the gun.

Dave

I have a Husky double hammer gun that was converted to 50-110. Lots of fun.

Rich

So Srose offered me his 45-70 Siace and also kindly loaded some rounds for me. It s a beautiful Alaska Deluxe,double trigger, with a very nice sheep head engraving. Tried it out today and with Srose loads it's a pleasure to shoot and grouped 2-3" at 50yds on my first trip. I also tried some Grizzly 350g loads at 2100 fps. 2-3 " at 50 yds and 4-6 at 100yds although they crossed by about 1". Shot a little high but for a first outing I m very pleased and a nice practice rifle for my.577VC and for Ohio deer season. At 2100 fps it's not much off the performance of the venerable 450/400 Nitro, that was only displaced by the 375H&H, as an alright Africa rifle. ( I m not suggesting it as an elephant rifle but from Michael and Sam s Magnus Opus testing it clearly, with a flat headed solid, it has the penetration for brain shots)


Thanks to all for suggestions. I now have dual function double for Ohio deer and 577 practice.