Scope for R1

[BmaS]

I need some recommendations from you guys.  I currently have a BSA platinum series 8-32 x 44 sitting atop my R1 (Huntington Beach) .22.  I replaced the piston seal and mainspring recently with a Vortek.  (It had lost power, and the new spring definitely did the trick to bring the power back.) 
I started noticing the POI shift when I change magnification levels.  Obviously, 32x is overkill at 15 yds.  But if I sight in at 8x @ 30 yds, they increase to 16x or higher, POI changes.  (Problem could be the shooter, but I doubt it.)
The BSA Platinum is the only one like it that I have, and I haven't moved it to other rifles.  However, nothing else I own has the brute force of the R1 either.

Any and all suggestions are welcome. 

PS -- I have my eye on a Hawke Varmint 6-24 x 44 SF, but I am open to others.

[Frank in Fairfield]

Sam,
Your POI will definitely shift when you change power on your scope.
Example:

On my TX I have the scope sighted in at 25 yards at 12X (Hunter FT).
Chairgun tells me at 12X to hold 2.7 mil-dots above intended POI at 10 yards.
If I change the scope to 6X that holdover becomes 1.5 above POI.
If I change to 4X that holdover becomes .8 above POI.

So, if you are zeroed at 8X at 30 yards and increase your power to 16X, theoretically to would hit a bit higher than where you were aiming at 8X.

The "Chairgun" program (free) can help you with this.

But, if you want to, take the scope off and shake it.

The R1 might have shook something loose.

BSA (Florida) is very good about warranty returns.

Good luck.

[EMrider]

Sam,
Your POI will definitely shift when you change power on your scope.
Example:

On my TX I have the scope sighted in at 25 yards at 12X (Hunter FT).
Chairgun tells me at 12X to hold 2.7 mil-dots above intended POI at 10 yards.
If I change the scope to 6X that holdover becomes 1.5 above POI.
If I change to 4X that holdover becomes .8 above POI.

So, if you are zeroed at 8X at 30 yards and increase your power to 16X, theoretically to would hit a bit higher than where you were aiming at 8X.

The "Chairgun" program (free) can help you with this.

But, if you want to, take the scope off and shake it.

The R1 might have shook something loose.

BSA (Florida) is very good about warranty returns.

Good luck.

This has been my experience too and I have found Chairgun to be a great tool.

Currently, I have a centerpoint 4-16x atop my R1. Works pretty well and so far has handled the R1 recoil fine.

But it is too heavy and bulky for hunting and I don't need more than 12x for my hunting areas.

So I will probably replace it with a Hawke or Vortek.  Not sure, but weight will be a big factor.

R

[MikieG]

Something you may be unaware of is the difference between 1st focal plane ans 2nd focal plane images. With a second focal plane scope (most inexpensive scopes), the image grows while the mil scale stays the same. So the measurement  mil has at one magnification will change as you zoom in.
I know some bargain variable scopes will change zero as you zoom the magnification cam up and down. This is literally poa/poi changing at the center of the reticle. THAT is a poor scope. But changes in mil holds on different mags would be correct on second focal plane scopes.
First focal plane scopes will change both the image and mil scale together and in proportion to each other. The mil values never change. 
Hope i made sense here because i have thoroughly confused myself.

[palonej]

I got it Mike.....but now my head hurts!!!
 

[MikieG]

Nothin like it will in the mornin!

[BmaS]

Thanks for the help gang.  You may have just saved me from an unnecessary purchase.  Although, I hear those Hawke scopes are really nice...

[cwlongshot]

Thanks for the help gang.  You may have just saved me from an unnecessary purchase.  Although, I hear those Hawke scopes are really nice...

There is one in the classifieds right now!

CW