The 10 is a good round which puts the 10/40 in the 38/357 and 44SP/44mag catagory.Although the 45acp/Rowland conversion requires physical changes,the Roland is a serious hurt on the wrist and the target comparatively speaking.Yeah,you don't just buy ammo at the local gunshop,but the same is truer about serious 45Colt.I believe if you want more you need to re=evaluate your caliber choice,but limited to one gun,there's more to be had if you roll hour own and much gooder performance.Good pick though.Make a 45 Colt into a 5 shot on a Blackhawk,the 10 is a wimp and you'll know on the first round.It can equal the Cassul if you can handle it.Linebaugh started it I believe and Bowen followed.If you want to test for carple tunnel,try the next punchout on a Blackhawk 475 Linebaugh,drops a charging Cape Buffalo-3rd nastiest critter on earth.You will have carple tunnel after a box of those.Serious 45 Colts hurt,real easy to induce a flinch.
Ruger GP100 .357 Mag.
S&W 686 6" bbl.
My three screw Blackhawk .357/9mm conv.
I'm thinking H&K MP10 in 10mm.
I had set out to buy a S&W 686 6", but found them juuust a bit too much $(worth every penny too)
So, I'll say the only pistol I've owned: Sig Sauer P250 .40 Full Frame(just got it)
16 different handguns in 9mm
8 different handguns in 357
4 different handguns in 45acp
3 different handguns in 40
1 handgun in 10mm
24 semi auto pistols
9 for ruger
5 for beretta
4 for glock
3 for sig
3 for S&W
2 for HK
1 for kimber
1 for walther
1 for CZ
1 for kahr
2 for 1911 style
Long gun? 12 gague shotgun. With the appropriate shell, you can be effective against anything that flies, walks or crawls on the north american continent.
I don't have a handgun yet. After Christmas I am going to start shooting and see what I like best. Right now just off reviews, I really like the Springfield XDs.
I think there is only one answer here man for handguns at least.
If only for the reason of spare parts and accessories being everywhere should SHTF. I don't know if it would be 9 or 40 but I don't even need to say what brand im talking about.
Back when I had only one gun it was a Remington 870 20 Ga pump shotgun, the youth deer model with 18 inch rifled barrel and real sights. I added a magazine extender so it can hold six 3 inch shells plus one in the chamber. Obviously this was not for concealed carry. But for general purpose home defense it was just about right, IMO. The 20 Ga youth-model decision was a tradeoff to make it more user-friendly for the wife ... just in case. Ammo, parts, and accessories are much more plentiful in 12 Ga.
Browning buckmark .22, in my opinion the do it all caliber.
Cz-75 without a second thought.
I carry a full size SA XDM45 w/ 13+1, but if I have only one, it has to be a Colt 1911. One long gun? M-21 sniper version of the M14.
870 12 Ga. Great personal protection and you can hunt anything you want with the proper shells
M-1 Garand in 30-06. Excellent close and long range performance. Won't break when used as a club if you need to butt-stroke.