Browning’s Buck Mark URX pellet pistol: Part 2
by B.B. Pelletier
There’s lots of interest in the Browning Buck Mark URX. Some have already purchased it because they didn’t want to wait for the report, so that tells you what people are thinking about the gun.
There was some confusion about the advertised velocity in Part 1. I mentioned the velocity (320 f.p.s. with lead pellets and 360 f.p.s. with alloy pellets) that was printed on the package, but there’s a different number in the owner’s manual and still a third number on Umarex USA’s website. So, which is it? We’ll find out today.
The velocity is published for both lead pellets and lead-free alloy pellets, so that’s how I tested it — with three different lead pellets and with a lightweight alloy pellet.
The first pellet I tried was the RWS Hobby — that all-time standard lightweight lead pellet. This 7-grain lead pellet averaged 334 f.p.s. The slowest pellet went 319, and the other nine in the string ranged from 329 to 340 f.p.s.
After the first string I tried a second one with the same pellet seated deep into the breech, using the Air Venturi Pellet Pen and PellSet. Seated this way, they averaged just 320 f.p.s., so it wasn’t an improvement. Hobbys fit the breech a little tight; so when I seated them by hand, they popped into the barrel. But deep-seating just pushed them forward and didn’t improve on the terminal velocity, so the tight fit is important. The range with the deep-seated pellets was 316 to 322 f.p.s., so the velocity spread was tighter.
After the Hobbys came H&N Match Pistol pellets. They weigh over half a grain more than the Hobbys, so you’d think the velocity would be lower, and it was. But not that much!
The first shots were noticeably slower, then they increased and the range went from 314 to 322 f.p.s. The average was 319 f.p.s., so it wasn’t that much slower. These pellets fit the breech a little looser than the Hobbys, but were still a good fit.
I tried these with deep-seating, and once more the average velocity dropped to 312 f.p.s. The range this time went from 308 to 318 f.p.s. On the basis of velocity, alone, I wouldn’t deep-seat them.
The final lead pellet was also a surprise. The pellet was the JSB Exact RS that weighs 7.33 grains. You would expect them to be a little slower than the 7-grain Hobbys, but they were actually faster! They averaged 343 f.p.s., with a range from 339 to 346 f.p.s., so they were tight in the spread and also fast. I expect them to be accurate, as well. I didn’t deep-seat this pellet because it fit the breech a little loose.
Very clearly, then, the Buck Mark I’m testing shoots lightweight lead pellets even faster than advertised. That’s always welcome when the gun in question is a lower-powered example.
This gun is distributed by Umarex, so it was a natural decision to select the RWS HyperMAX lead-free alloy pellet. Most of you know that Umarex USA is also RWS USA, so you can see the tie-in.
This time, it took three shots before the pellets came into their range, and it was such a big jump that I want you to see it. Shot one went 347 f.p.s., followed by shot two at 348 f.p.s. When shot three went 359 f.p.s. I thought the pellet had gotten into its range, but I was wrong.
Shot four went 370 f.p.s and they went slower than that only once in the next 9 shots. The average was 374 f.p.s., and the range was from 368 to 378 f.p.s. That’s a little faster than the 360 f.p.s advertised.
These pellets varied from just loose to falling into the breech a noticeable distance. I didn’t try to seat them deep since half of them were going in deeper than that, already.
The reviews of this gun mention the hard trigger. What I see on the test gun is a single-stage trigger that’s heavier than it could be. The test gun fires at 6 lbs., 14 oz. A 5-lb. pull would be better. With a single-stage trigger, you always notice the pull weight more than with a two-stage — as long as the second stage breaks cleanly.
The Buck Mark cocks with just under 14 lbs. of effort. That makes this one of the lightest-cocking spring-piston air pistols I’ve ever tested. As previously noted, the barrel detent is not tight, though it keeps the barrel closed during firing. This will be an all-day shooter. The only small concern is that the front sight is right where you want to grab the barrel during cocking, so you have to choke up about an inch.
Possibility of modifications
The question of modifying this air pistol has already been raised by one reader. The gun is constructed (plastic shell housing, potmetal parts) will make any modifications very difficult and definitely not worth the effort. You’ll be better off buying this pistol to shoot as it comes and forget about modifying it in any way.
Opinion so far
So far, I remain impressed with this pistol. Of course, the lion’s share of the report comes during accuracy testing, but I already like the power, the ease of cocking, the ergonomic grip, the crisp adjustable sights and the low noise signature. If the Buck Mark is accurate, it’ll be a wonderful addition to a short list of great low-cost air pistols.