P1 .177 accuracy

Cocking a P1 /45 does not present the same problem as with SSP pistols, because you place your hand underneath the barrel housing and open the gun under the force of the mainspring. With the SSP we have to force the barrel housing closed in the opposite direction, which is when a scope can hinder things a bit.....so it does not present a problem with this gun and why Beeman recommended the installation.
 
The cocking action is also easier than SSP pistols....Not because it requires less force to open it but because humans can better control the opening force to a sear engagement than they can the closing force under and continually increasing pressure.

Its why we cannot charge much more pressure than the approx 3ftlbs the SSP makes....at least not in one stroke.
 
Do you find it difficult to cock the p1 with a scope mounted on it? I never liked the idea of putting a lot of force on the scope when trying to cock it. I want to try one of those holo sights on the p1 to see how that performs.

Regarding cocking the P1 with a scope mounted and force being applied to the scope: if you take a look at the 2:15 mark of this short video you'll see me cocking the pistol. Pay attention to the 2:48 mark also, as you'll notice that the final closing force is applied not through the scope but directly on the pistol's upper slide frame- on the meat surrounding the rear sight. Here's the video link: https://youtu.be/H6viVzgvvRo

Here's something I do out of habit to reduce unnecessary wear and tear of the breech seal and ensure longevity: I never release the hammer and allow the upper frame to violently spring up and downwards, which results in the breech colliding against the O-ring. This is usually done in almost all of the review videos I've seen. Basically what happens is the guy (or gal) will pull back the hammer without manipulating the upper slide in any way. This is easily remedied by supporting the pistol mid frame in one hand while releasing the hammer with the other hand. The fingers on your supporting hand should be contacting the upper slide/scope in such a way that they'll slow down the upward acceleration of the spring released slide, therefore cushioning the whole system. You're basically 'catching' the slide before it comes crashing down against the breech seal.
 
Thanks for this latest post and advice! I picked up a used P1 earlier this fall and have put at least one tin of pellets through it. I'm guilty of opening and closing it the way you advise against... And yes, the breech o-ring is trashed. I'll replace it and be more mindful of how I open and close it in the future.

The gun is a total joy to shoot!

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Before settling on these particular grips I tried several including Hogue (2 different styles), Pachymayr American Legend hardwood panel grips w/ rubber finger grooves, Beeman"ish" combat grips with finger grooves and various combinations with the Pearce rubber finger grooves.

The grips that resembled the Beeman combat grips worked very well for me, but I prefer the ones I have now much more. They do require a bit of shaping (sanding/filing) for best fit and comfort, however. 
 
This 5 shot group was shot with a Beeman P1 .177 at 10 yds, standing, unsupported with a 2 handed grip using the open sights. 8gn Creedmore Match pellets used.

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The shot that slipped high (shot #3) was me holding the pistol with too light of a grip. Shots 1, 2 and 5 touching on the center black of the target.

Here's a 5 shot group from last week, 14 yards outside, standing, unsupported, 2 handed grip, factory grips, outdoors in moderate wind using AA 7.9



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Such an awesome pistol, and so fun to shoot. Earlier today I was ringing a steel gong target at 15-20 yards using the open sights. The 8 gn Creedmore Match Pellets (Vogel) give a very satisfying smack on the steel target. Hard to get tired of a pistol like this!


 
The HW45 does have a very long mainspring, indeed its shared by the HW25 air rifle. It does mean it is prone to slight buckling.


I should have snapped more pics while I had it apart for the tune but I was "in the zone". I did manage to take a couple pics. You can clearly see where the spring broke (one clear break) near the load bearing end. A pic of the new ARH spring next to it for reference. 

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Did you really say that (in bold above) ?

It's a "spring", the whole freaking thing...is "load bearing" !

My groups are about twice that size. But I'm shooting fully, off hand, standing, and, my hands and eyes are 70+ years old. I shot my P1 a bit the other day. I figure that I need to shoot it more, more practice to get that group size closer to what you've got.

Thinking of getting an HW45 Black Star. I'll have to "fit" the grip to my hand, but, overall I like what they did with the grip.

Mike
 
The HW45 does have a very long mainspring, indeed its shared by the HW25 air rifle. It does mean it is prone to slight buckling.


I should have snapped more pics while I had it apart for the tune but I was "in the zone". I did manage to take a couple pics. You can clearly see where the spring broke (one clear break) near the load bearing end. A pic of the new ARH spring next to it for reference. 

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Did you really say that (in bold above) ?

It's a "spring", the whole freaking thing...is "load bearing" !


Seriously? Come on man.

Thanks for letting me know it's a "spring".