Beeman Talk about pellet fussy.

[Mycapt65]

I'm still struggling to understand what's going on with the accuracy of this early Beeman 77. The wind was very light to non existent this afternoon so I went back at this rifle with five shot groups at 25 yards. It shoots ok with FTTs 4.51 (targets 1-5)or 4.52 (targets 6-10). After dialing right 8 clicks and up 6 I tried grouping 5 FX 10.3s on 11 and it was horrible. Tried two shots of 8.44 JSB at 12 but they shot so far left I moved to 13 where they shot so poorly I gave up after four.
Bottom row is AA branded 8.4 made by JSB. Target 23 is more what I expect from this rifle at 25 yards the rest are about the same as FTTs..

This gun shoots ok with its best pellets but its terrible with most everything else. The last rifle I seen shoot different pellets to such wildly different POI had a loose barrel and no choke. The barrel on this one slugs great so I had such hi hopes.

It might turn out to only be a conversation piece on the wall.

 

[EquivalentDelta]

You probably already have but just in case:

Check your stock screws are still tight

Check the scope base and rings.

Crack it open and inspect the mainspring.

 

[Nitrocrushr]

I'm still struggling to understand what's going on with the accuracy of this early Beeman 77. The wind was very light to non existent this afternoon so I went back at this rifle with five shot groups at 25 yards. It shoots ok with FTTs 4.51 (targets 1-5)or 4.52 (targets 6-10). After dialing right 8 clicks and up 6 I tried grouping 5 FX 10.3s on 11 and it was horrible. Tried two shots of 8.44 JSB at 12 but they shot so far left I moved to 13 where they shot so poorly I gave up after four.
Bottom row is AA branded 8.4 made by JSB. Target 23 is more what I expect from this rifle at 25 yards the rest are about the same as FTTs..

This gun shoots ok with its best pellets but its terrible with most everything else. The last rifle I seen shoot different pellets to such wildly different POI had a loose barrel and no choke. The barrel on this one slugs great so I had such hi hopes.

It might turn out to only be a conversation piece on the wall.

View attachment 556579

Make sure you are putting at least 10-15 shots through the bore for each pellet change before evaluating accuracy. You could even pull a couple plain dry patches through the bore between each pellet change, then maybe 20-30 shots to settle things in, then test on target.

Steve

 

[Mycapt65]

Make sure you are putting at least 10-15 shots through the bore for each pellet change before evaluating accuracy. You could even pull a couple plain dry patches through the bore between each pellet change, then maybe 20-30 shots to settle things in, then test on target.

Steve

Thanks Steve,
that's a very appropriate response. I certainly didn't give it enough shots in this example to properly season or lead the barrel between brands. Normally I don't assess accuracy until I have. These groups and POI shifts are so wild they're beyond the reasonable expectations of improvement. If shooting another 25 or 30 pellets cut the groups and POI shift in half, they'd still be giant. I ran out of patience and room between targets and simply quit early. Come to think of it reZeroing the scope after the H&Ns did take 10 or so shots of JSB made lead before shooting those for groups.

In the past I have shot strings of foulers through this rifle and the groups of most pellets couldn't be called groups at two to three inches at 25 yards. My worst Weihrauchs will do that at 50 yards in a breeze.

This rifle has never shot great since I've had it. I took it apart, brushed out the barrel and slugged it twice. I polished the bore with JB paste the last time around. I was hoping it'd come around after a couple hundred seasoning shots, but it ain't.

The crown looks good. And if the crown were bad, I'd think nothing would group. I think I'll have to stay with the FTTs until the next time it's apart. I'll slug it again keeping in mind that only tighter fitting pellets print well. Maybe I'll pick up something I missed before.

Thanks for taking the time to respond with good advice. Most people aren't aware of the importance of leading a barrel.

Be well
Ron