by B.B. Pelletier

Part 1

Before we begin, an announcement about an airgun show coming up. The Potomac Arms and Collectors gun show will be held in Frederick, Maryland, on September 13 & 14 at Elks Lodge #684. Hours are 9 a.m. to 5 p.m. on Saturday and 9 a.m. to 3 p.m. on Sunday. Entrance fee is $6, 6″ sales tables are $50 and 8′ tables are $60. Call 301-424-7988 and speak to Marv Freund to register. This is a combined gun and airgun show that draws a lot of Maryland, Virginia, West Virginia, Pennsylvania and Washington DC collectors. I’ve done well there with sales tables in the past. You’ll see some very nice collectible airguns at this show.

Today, I’m back to the Webley Raider 10, and we’ll look at velocity. Before we do, however, a report on the gun, itself. You’ll recall in part 1 that I said the gun’s action was very stiff and difficult to operate. That has carried over to the velocity test with only a minimum of loosening. The magazine fights you, making installation difficult, and the indexing is not precise. Several times I had to hand-index the next pellet.

The bolt continues to be overly stiff, though I do see some improvement. But moving it around its slot is as difficult as cocking a BSA Super 10 – another notoriously hard action to cycle.

Filling the gun, on the other hand, could not be easier. The probe fits the adapter on the end of the pump hose, and once the probe is greased with silicone diver’s grease, it slips into the rifle’s fill port easily.

Instructions were wrong
The rifle will accept a 3,000 psi fill, despite the manual specifying a 200-bar limit. The extra six bar gives an extra shot or two, which you’ll want because this rifle gets about 10 shots per fill. That’s not a misprint – I said 10 shots or a single clip. Let’s see how it does.

RWS Hobbys averaged 814 f.p.s., with a spread from 803 f.p.s. to 828. That works out to 17.51 foot-pounds.

Crosman Premiers went an average 796 f.p.s.. The spread was from 763 f.p.s. to 813. That’s an average energy of 20.12 foot-pounds. See how heavier pellets increase the energy in PCPs?

The 21-grain H&N Baracuda Match, which are very similar to Beeman Kodiaks, averaged 692 f.p.s. with a spread from 682 f.p.s. to a high of 699. That’s an average of 22.34 foot-pounds–the best of the three pellets. But let me show you the string and you will see what I mean about this being a 10-shot rifle. The gun was filled to 3,000 psi before starting.

    692
    699
    693
    694
    696
    690
    693
    694
    682*
    684*

That was for 10 shots. Looking at those last two velocities,* I can tell the gun is off the power curve and on the way down. But to show that to our newer readers more clearly, I loaded and shot three more pellets. Starting with shot 11, the velocities are:

    673
    666
    665

A straight plummet, with little hope of recovering. If you buy this rifle, know its limitations.

The rifle is quiet for the power it projects. It sounds about like a Sheridan Blue Streak on 6-7 pumps. That’s the shrouded and baffled barrel at work.

Depending on which pellet you use, this gun ranges from 17.5 to 22+ foot-pounds. That’s a big spread. It also demonstrates the advantage of heavier pellets in a PCP. However, we still must shoot for accuracy to see which pellet to select.

A homework assignment!
All you budding pneumaticists have read quite a bit about pneumatics and PCPs this year. You just read about how a pneumatic valve works, and this rifle gave you a clear demonstration of the classic power curve of one. Here’s your assignment: Calculate the average velocity of 10 15.8-grain JSB Exact Jumbo pellets shot from this rifle on a 3,000 psi fill.

You can do this. It isn’t difficult. I will announce the answer in the next report.