SIG Sauer ASP20 Gas-Piston Breakbarrel Air Rifle

[mbouchpcp]

RE: ASP20 trigger pull, accuracy and return to factory

I have about 400 pellets through the rifle. Trigger pull has eased up considerably but is still too heavy for my tastes.  In fact, the pull is now the major factor in my accuracy with this rifle.

On a more positive note, I see that the ASP20 has potential for entry in air rifle bench rest matches if I get a bit more strength in my arm and trigger pull lightens up some more.  Unfortunately, current trigger pull keeps the rifle IMHO from being on par with Walther LGV/LGU and TX200 rifles in bench rest matches.

I got an RMA number and FedEx label from SIG via email.  As some may recall, my chronograph numbers match neither the factory specs or Tom Gaylords findings.

I dropped the gun off this morning at FedEx.  According to the RMA email, I can expect a turn around of 4 to 6 weeks (ouch).  I'm hoping that they'll jump on the gun as soon as it arrives since it is a new model, but.........

I'll work with my .177 LGV and .22 Redwolf HP while waiting for the return.   

Speaking of the LGV....I put a new Timbum spring in it and it now cocks harder than the ASP20.  I haven't measured effort required but I thought I ought to mention it and the fact that I'm now shooting JSB Monster Diabolo (13.43 gr) pellets rather than 10.3 gr pellets.  Me thinks I need to do a chronograph session.

Best wishes.

The other Mark B.

[c_m_shooter]

I shot my ASP20 in the local field target match today.  The rifle performed fine, I just hadn't spent enough time getting a range card sorted out for it and learning the wind drift.  I have been shooting an HW97 at 12 ft lbs for a few years now in WFTF class. I shot hunter class today for a change. Today early on I was compensating too much for wind that I didn't have to at this power level.  I had some issues getting the hold sorted out for the elevated targets.  Even so, I shot the same percentage as I do with my normal rifle.  I think this rifle will do just fine as a hunter class AAFTA rig.

[subscriber]

Mark B,

I wonder if your altitude is affecting FPE; and why no one has mentioned it?  I would have thought that 1400 feet might matter more than the temperature being 20 degrees "too low".

Besides, if temperature is a factor then shooting the gun rapidly over the crony, should show velocity rising over a series of ten shots.

What about the fact that air density is higher when cold?  That should increase velocity because a larger mass of air is compressed on firing.

Unless this SIG depends on a little dieseling, and at 50F, the glowplug just isn't warm enough to get things lit

Even if SIG was too generous with the piston lube, and the problem is the grease is stiff when cold, that should thin out fast with repetitive shooting; unless you are in an air cooling gale.

One last point; when an air rifle is specified as 23 ft.lb, what is the tolerance on that?  It can't be zero; unless clearly stated as 23 ft.lb minimum.  This is just like with engines.  Some perform over nominal, some under...

[AP2020]

I produce product reviews for Sig Sauer, I should check one of these out!

[UlteriorModem]

Cool the more we know the better...

That is if you can get one. Still waiting!

[pops76]

Here is a 50 yd group. 4 were less than 1/2". AA 16 gr. that had a 794 on my chrony and energy 22.4. Using a UTG 3-9 scope that has fairly thick reticle. Not an excuse as this is very good for me. Had several 1" @ 50 and 1 @ 75 that was 8 out of 10 for 1". Have about 100 pellets shot so far and trigger pull is a little less than 2#.

[john]

I'm liking what I hear about this gun and so am just posting so I can monitor this thread. Thanks guys!
I hope Sig follows up on this product.

[UlteriorModem]

I know this thread is a little dated, but chrony numbers were aske for and I finally got my ASP20 in .22 caliber and ran a few across the Chrony.

It averaged just shy of 24 ft. lbs.

H&N FTT (14.66 gr) Avg of 853 fps with a Std Dev of 3.81

JSB Jumbo Heavy (18.13 gr) Avg of 752 fps with a Std Dev of 4.7

It was a little loud at first with some dieseling from the factory oils I suppose. I did clean the barrel before shooting but it had a light coat of dark colored oil and cleaned easly. I think some of that was from AoA 'testing' the gun before shipping.

I did not find the trigger too heavy and still havent adjusted it any. Dont have a trigger pull test thingy but I would guess somewhere a little over 2lbs of pull.

[pops76]

Here a few of my chrony figures. Mine is a lot more accurate than I am. not unusual for me to get 1/2" groups @ 30 yds and have had some that were one ragged hole.
Pellet                          wt.   vel.    std.
Beeman field Target   14.66  865   3.7
Air Arms                    16       830   7.3
Air Arms                     18      770   2.9
Crosman HP                14.4   870   6.4
Poly Red Tip                16      814   7.2

Have some others but can't get to the info at this time. Shoot and enjoy.
As my pastor told me years ago--" Shoot straight and give God the Glory"
Don