Guy Neill

0.38 * 0.39 is a different shot than 0.40 - 0.41

I see nothing in either video that has the slide not moving by the time the bullet exits. It can't be one way one time, and different the next time. It takes the bullet some 0.0009 seconds to traverse the bore. The slide cannot stand still for that time and suddenly start moving later. Perhaps the video time scales differ a bit, but I don't see the bullet exit until the 0.42 mark - after the slide has moved in the 0.40 - 0.41 marks.

In the second video, at the 0.40 - 0.41 second mark, you can see that the slide has moved just before the bullet exits.

Stopping the first video at the 0.11 second point, the bullet is exiting the muzzle. Backing up to the 0.10 second mark clearly shows that the slide has moved between the 0.10 and 0.11 marks. The black background isn't the best for seeing details, but examining the two marks will show the motion. Thanks for posting the vids. I still need to look at the second one.

Great photo!

The initial weight is the slide and barrel locked together. The slide motion is how far the slide has moved at the time the bullet exits the barrel. Bercovitz and my values matched neglecting friction and spring forces (0.140") for the values used. When I originally calculated this, I found adding the friction and spring forcers changes the slide motion to 0.134". That's right at the general statements I've seen over the years that the slide moves about an eighth of an inch at the time the bullet exits. Barrel ramp-down occurs after the bullet exits. There are still many that do not believe the slide moves at all before the bullet exits. It clearly does move when viewing high speed videos - and exploring the physics.

While this example neglects spring and friction forces, when added those (16 lb recoil spring and 23 lb mainspring) for the full weight slide, it reduced the slide motion by 0.006". Changing from the 16 lb recoil spring to a 22 lb recoil spring for the lightest slide listed saw the slide motion reduced by 0.009".

There seems to be a trend to lighten the slides on 1911 (and other) handguns. As you would expect, removing weight from the slide results in increased slide velocity and further travel by the time the bullet leaves the muzzle. Looking at the changes while reducing the slide weight an ounce at a time gives these sorts of results. The gun weight is taken as 2.44 pounds before weight is removed, regarding the free recoil energy (FRE). This is based on a 230gr 45 bullet with a muzzle velocity of 830 fps with 5.0gr of powder. Weight Removed Slide Weight Slide Velocity Slide Movement Gun FRE Ounces pounds fps inches Ft-lbs 0 1.058 25.8 0.140 6.51 1 0.996 27.4 0.149 6.68 2 0.933 29.2 0.158 7.05 3 0.871 31.3 0.170 7.05 4 0.808 33.8 0.183 7.25 Not, maybe, a significant change, but there is also the argument that various holes in the slide allow dirt and debris access to entering the gun.

I looked at the rifle. I was wrong- and right! The gun itself is marked Custom Rifle, but the tag on the case it came in is marked Custom Competition. I'll try to get some photos soon.

You can load them to any length that suits you. Factory specifications show a range from 1.000" to 1.169" for OALs. Many find that longer feeds better, but you don't know that the shorter length will work until you try it. Typically, use any jacketed bullet data for the weight bullet, starting low and working up. Your shorter length indicates you may need to stay with the minimum loads.

You might look at an OAL of about 1.135". Vary from there as you see a need.

If we take the Hornady 55gr Hornady FMJBT at a muzzle velocity of 3,100 fps, and a line of sight 2.0" above the bore, the bullet will never rise above the line of sight for a 100yd zero. It will be an inch or so low within 30yds but if you're shooting for the "A" zone that should not be critical.

I believe mine was called the Competition rifle. I need to get it out and look it over as it has been a while. It has a fixed stock.

For a 9mm bullet with a muzzle velocity of 1,100 fps, the time in a 16" barrel would be about 0.0024 seconds. If we have the bolt weight, we could approximate the distance the bolt moves in that time. Load data may refine it a bit more.

What sort of velocity difference are you seeing with the 221 between the XP and the 700?

Perhaps this - Pile Driver Bullet Puller | Frankford Arsenal

I always thought the 221 Fireball should have been more popular than it was/is. A modern case (easy to form from 223 with good performance.

It's not likely to harm your gun. It may be slightly greater pressure, but that may be countered by the increased free bore. Fire one or two and inspect the case(s) to determine whether or not to proceed.

Walnut or corn cob. Walnut is a bit more aggressive than corn cob, but both will work.

I've always liked the National Reloading Manufacturers Association bench. It is intended to build it yourself, but you could discuss it with a local carpenter or cabinet shop. Working from memory at the moment, I recommend not cutting the 2" off the tabletop (H) and changing the support board to a 2x8 (E) instead of the 2x6 specified to leave a bit more overhang for mounting presses. (Checked once I looked at the plans again) The plans are here: *Reloading Bench Plans (shotgunsportsmagazine.com)

Welcome! Where are you located? I was in Houston for a number of years and there were several clubs offering various shooting doctrines in the area.

Both good men. I'm sorry for their passing and hope their families are holding up. PASA was (is?) a great place.

If you are able to push the bullet deeper into the case, it could be that you need a smaller expander. Measure the expander diameter. It should be 0.002" to 0.004" smaller than the bullet diameter.

Besides the 356 TSW, there was the 9x23 Winchester. Historically there have been others like the 5mm Remington rimfire magnum, the 41 AE and 9mm AE, 25 NAA, 9mm Win Mag, 45 Win Mag, 32 NAA, and others. Many attempts to get new stuff going, some take off, others do not. I would have liked to see the 356 TSW and 98x23 Win do better than they did.

First off - I do not own any railed pistols. That said. I would expect any pistol that did not come with a rail will not have sufficient material to machine a rail as is. I believe I've heard that Dawson has a bolt-on rail to allow adding a rail to pistols lacking one.