A 260 gr isn't going to be as accurate as a 300 gr, simply because it doesn't have the bearing length to keep it self aligned as well. I strongly suggest you get a 260 WFN, in plain base if you intend to punch paper with mild loads. I can cut the crimp groove, or nose length at any distence you request. However, if this bullet is for mild loads, and since the max OAL is so short anyhow. Let's put the crimp groove IN the ogive, starting just forward of the bearing surface. One lube groove in the middle of the entire bearing length will make it slip easy, and the bullet will have a super grip on the rifling. Figgure out maximum bullet diameter that will chamber in your revolver, as we want to fill the chamber, because it will be the bullet guide as it enters the cylinder throats. Unlike most Colt chambers, which are traditionally oversize, and hurt accuracy dramatically, FA makes tight chambers, but fill them to the limit that will allow chambering clear to the rim with cartridge weight only. You'll have a delightfull tack driver.
The same setup as above is suited to all calibers of revolvers but getting such a fit is difficult or impossible due to cylinder throat diameters being too small to allow a chamber filling bullet to be seated out for heavy loads. However, for anyone wanting a low velocity bullet, the same recommendations apply. In the above case the bullet will not reach the cylinder throats, and that's how I would set up for any other revolver where target loads are the main thrust. Velocities to 1200 fps plus can still be very accurate if slow powders are used, but deep seating as outlined above reduces powder space, optimizes all the available bearing length of a short bullet, and really makes the light fast powder loads perform, in magnum or special cases.
