Posted by Rod Madsen on November 18, 1999 at 12:26:51:
I recently received a new order of Nygord pellets. I also recently received a tin of Champions Choice pellet ($5.00/tin). It is only
fitting to check them out against
my current Nygord pellets. I also have some RWS R10 Match pellets that I use in matches. So I moved my vice to my shooting
bench (lightweight), filled the
cylinder on my Styer, Put the Styer in the vice between two pieces of plywood and cranked it down tight. I left it sit overnight. The
next morning I tightened the vice
again and shot four(4) groups of five(5) pellets with each pellet. I thought some of you might be interested in the results.
DISCLAIMER:
This test is in no way to be considered an accurate or definitive test. The vise was mounted on a light weight table which cannot be
considered a stable platform
This is a quick and dirty done for my own information. The reporter of these tests cannot be held liable for anything said here. The
reader uses these results at thier
own risk.
NOTES:
1) All pellets are 4.50mm
2) Group sizes are shown in thousands of an inch, i.e.. 177 = 0.177 inches
3) Groups were measured edge to edge and 177 was subtracted to get CTC distance.
Nygord-1: 123, 63, 68, 148
Average: 100.5 Std Deviation 36.14
Max 148 Min: 63
R-10 Match: 98, 108, 158, 123
Average: 121.75 Std Deviation 22.74
Max 158 Min: 98
Champions Choice: 158, 133, 148, 183
Average: 155.5 Std Deviation 18.2
Max 183 Min: 133
Nygord-2: 33, 138, 113, 173
Average: 114.25 Std Deviation 51.52
Max 173 Min: 33
Comments: The largest group included, (0.360 in edge to edge) will sit comfortably inside the 10 ring (aprox 0.465in) with all shots
touching the inner circle.
Posted by ET on November 19, 1999 at 22:03:27:
Hi Rod,
It is not surprising to have these results.
As a faithful reader of shooting magazines, we will often read on guntest articles that one gun (pay attention that it is gun, not
model) will have better groupings for one particular ammo than others.
As for airguns/pistols, they digest pellets and behave differently even with different air preasure/speed adjustments.
As one expert mentions here some time ago, there are several sweet spots for an air pistol. One most interest thing for a shooter is
to discover/ adjust a particular speed, pellet type and diameter (4.49, 4.50 or 4.51) to his own best.
I once experiment also wiht a gun rest and tried about 10 different pellets, including some from the same factory, same diameter
but different batches. The result is very enlightening.
Not only that they have different velocity behaviour and group sizes for different pellets, but even between different batches. For
my choice, I try to stick not on the smallest grouping but the one which perform most stable in 100 shoots, i.e. the grouping is most
stable from 200 bar and 120 bar.
Oner last thing, I discover that if I shoot the same 10 pellet in one string for different types, the grouping is better than I shot 10
pellets for each type but in a firing order of from type A to type B.....
Sponsored by Pilkington Competition Equipment