Tuesday, October 14, 2014

High scope mounts


The usual advice in mounting a scope or sights is to get as close to the barrel as possible. For a scope, that means selecting a mount that just allies the bell of the scope to clear the receiver with maybe enough space to allow a scope cover to slide over. The reason is simple: the farther apart the axes of the scope and the barrel, the greater the error in aiming if the rifle isn't held perfectly level.

But the are some cases in which there's an advantage to a high mount. One is with air rifles, like the Air Arms Pro Sport seen above. Pellets travel a lot slower than bullets, and have a lot more drag. Consequently, their trajectories are not as flat over their useful range as would be a .22 or a small caliber, high velocity rifle bullet. A 12-16 foot-pound gun like this Pro Sport, if zeroed at 22 yards, is going to see a drop of close to two inches between that distance and the maximum useful range of 50 yards. That's a lot of correction to dial into a scope- 16 clicks in a quarter minute of angle adjustable scope.

But if the scope is mounted two inches above the barrel, it's alignment is going to be a lot closer to the downward arc of the pellet than if it was mounted lower. A lot of field target shooters and some airgun hunters mount their scopes high for this reason. A second advantage is that on some stocks it's easier to get a good sight picture with a high mount. 

There are some disadvantages. The earlier mentioned problem of error increasing as the gun is tilted is one. Another is that some scopes don't have enough adjustment range to deal with a high mount; in those case scope rings can be shimmed, or you can purchase an intermount from Barska and other suppliers that has a built-in angle correction. Such mounts are designed to correct for the "barrel droop" seen in some break barrel guns, but they work well in this application, too.

High scope mounting isn't appropriate for all applications, but it might solve a scope problem you have. Don't be afraid to try it just because the experts say you should always mount a scope as low as possible.

Friday, June 20, 2014

A good 125gr load for the Ruger LCRx



A lot of the commercial defensive loads for the .28 Special use 110gr or 125gr JHPs, in part because the lighter projectile  results in lower recoil, compared to the old standard 158gr LRN or SWC.  I have a few boxes of these Speer 125gr JHPs on hand- I found a good deal on them last year- and decided to see if I could find a good load for my LCRx. I decided to start with Bullseye powder, as it's the fastest burning powder I have on hand. A fast powder means more complete combustion in a short barrel, and that means better efficiency. 

The Lee manual suggests 4.5-4.8gr of Bullseye behind this bullet for a +P load. Alliant's own data gives 4.5gr for the standard .38 Special load, and 4.8gr for the +P load. I decided to start at the low end. The Lee .49cc disk delivers a measured 4.5-4.6gr, according to my Hornady digital scale, so I decided to go with that. I used my 4-die Lee set, with the Factory Crimp die adjusted for a medium crimp- it's important to get a secure crimp with lightweight gun that will recoil a lot. I made up 50 loads using an assortment of cases and headed to my club.

My first test was at 20 feet, and everything was on target and centered. I backed up to the 50 foot line, and produced the followed pattern shooting double action:




Not too shabby. There was a bit of flash, but it wasn't too bad. Recoil was snappy- this isn't a gun I'd want to put a few hundred rounds through. But I wasn't working on a plinking load.  reloaded and continued firing:




That's actually 9 shots, by the way. You can see one pair of overlapping holes just above the 9, but the  hole below and to the left is also a double. Looking at this target I decided to stop right there- I think I have my load.  





Friday, May 30, 2014

The Ruger LCRx in .38 Special




The short barreled (or if you prefer, snub nosed) revolver is a classic American design. It was made popular by TV and the movies, the preferred carry of plainclothesmen and off-duty cops for decades, and even in the days of pocket-sized 9mms it continues on. I like .38 special as I reload for it, which means I have a good supply of low-cost ammunition, and I can custom make loads you simply can't buy, and I like the idea of a reasonably powerful pistol that's still small and light enough to carry in a waist pack when in the wilderness. I've owned two snubbies previous to this one, both of which I sold, in large part because a lightweight .38 is just not that comfortable to shoot. 

The first one I owned was a Smith & Wesson 442 Airweight, S&W's budget snubbie. Even with the soft grips it was right on the edge of painful to shoot. Add to that that fact that it's a shrouded hammer design- supposedly better for snag-free drawing, but I like the single-action option.  I sold it for close to what I paid for it, and then a year later I happened on a somewhat collectable revolver- a Miroku Liberty Chief in .38spl, a high quality Japanese made gun (Miroku builds guns for Browning and Charles Daly) that combined elements from both S&W and Colt designs. I sold it in part because it occurred to me that spare parts would be difficult to find if it ever broke- although someone told me later that he carried one in Vietnam for his full tour with no difficulties.

I still liked the idea of having a small-frame .38, and the Ruger LCR intrigued me. It has a lot going for it- It's made by Ruger, the polymer frame is said to be shock absorbing, and it's gotten a lot of very positive reviews. But it had one strike against it- no hammer. Then Ruger announced the LCRx, an LCR with a hammer. I was hooked. I found a local dealer who quoted a very good price and asked him to order me one.  A few days later I had it in hand, and header to my club's indoor range with a box of 100 light 148gr HBWC target reloads (2.7gr of Bullseye) and half a box (10) of Hornady 110gr Critical Defense FTX loads. The Hornadys currently list for about $1.47 each, so they're reserved for carry, but I did want to see how they performed.

First test was with the target loads: 10 rounds at 20 feet, double action, holding at the 10 ring:


Not outstanding, but every round landed in the 7 ring or higher. That's effective combat shooting. The gun was a bit painful to shoot, so I tried adjusting my grip.  I discovered that holding the gun a bit lower made a big difference; I think my big hands were catching an unpadded part of backstrap in recoil. There's an extra-soft section on part of the grip over the backstrap, and this is the part you want in the web between thumb and index finger. I also tightened up on the lower part of the grip to keep the gun from rotating as much, and that made a significant difference. This is all basic stuff, but sometimes you have to stop and remind yourself of the basics- even if you've been shooting for over 50 years. Especially if you've been shooting for that long. ;-)

Next: Target loads at 30 feet:



50% farther, but the group isn't 50% bigger. I was tightening up a bit. I also tried two of the Hornadys, which made the smaller holes near the bottom of the group. They were appreciably louder than my target loads, and were accompanied by a lot of flash, which suggests a slower burning powder.

Last, on to 50 feet:



Just five shots here, but note that the group isn't a lot bigger than the 20 foot group. I was getting better at controlling the gun. I wondered if I could do even better shooting single action while sitting down.




That's a four inch group, about half the size of my offhand group at that distance. (Yes, I know there are only four. The fifth doesn't count ;-)

Lastly, for comparison, my Ruger LCP,  also at 50 feet, with 90gr Speer "Lawman" FMJ loads:




I think of the LCP as a harsh recoiling gun, but I was surprised how much more comfortable it was to shoot than the LCRx- and how much more accurate. Neither gun has much in the way of sights, and the LCP's are even cruder than the LCRx's, but the LCP did significantly better than the LCRx.

So the LCP is potentially more accurate than the LCR, as well as being more comfortable to shoot, and significantly smaller, for that matter. Does this mean I'm unhappy with the LCRx? Nope. I still like the simplicity of the revolver design, the ability to fire a significantly more powerful cartridge, the flexibility of the .38 Special cartridge, and the fact that I can produce all the .38 special cartridges I need while .380 is still in short supply everywhere.

If you find the design of the LCRx interesting, but you're looking for a milder-recoiling gun, Ruger has stated that the LCRx will eventually be available on .22LR and .22Mag, too, just like the hammerless LCR. I think an LCRx in .22LR would be a great "kit gun" that the fisherman, hunter, or trapper could carry in a pocket. (And if you like deafening noises and blinding flash, .357 will be an option, too.)

Dardas Cast Bullets



There are a great many small bullet casters in this country that turn out a good product. My favorite supplier for most everything  is Dardick Cast Bullets, right here in Michigan. They're quick to ship, have good customer service, and they're only 100 miles from here. They don't have all the bullet styles I load, but they do offer most of the more popular ones in several weights and, for revolver fans, several sizes. If you're a fan of PPC, or Cowboy Action shooting, you'll probably find anything you need in a hard cast bullet at Dardas, from .32 to .50 caliber- including .44-40 and. 45-70.