SP-10/PG .690 & .710/NITRO 7'S & 4X5X7 PATTERN RESULTS

[SKFOOTER]

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Finally got my Nitro's in and patterned them yesterday afternoon with the Pure Gold chokes.  My SP-10 with the PG .690 put 356 Nitro #H210 #7 pellets in a 10" circle @ 40 yards and put 250 Nitro #H210 4X5X7 pellets in a 10" circle @ 40yards.  The PG .710 put 324 pellets of both the #H210 #7's & the #H210 4X5X7 in a 10" circle @ 40yards.  I was expecting 400+ from the PG .690/Straight 7 loads and was surprised at the PG .710 shooting the same patterns with both loads.  This is my first year of really tinkering with the SP-10 and Nitro loads.  I would welcome any comments. 

[S.C.C]

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Post up some pic's of your patterns and the wad that was in the shells.

[SKFOOTER]

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I don't have access to a digital camera.

[S.C.C]

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SK you have two good chokes for either load...depending on overall pattern the .690 for the 7's
and the .710 for the triplex may be best?
What do you think about those slow shootin 5$ WIN. SUP. PB 6's? 

[SKFOOTER]

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They don't hold a candle to these Nitros!!

[eight bore]

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You didn't mention the temperature when you patterned.

Something's i have learned from this site and applied have proven as effective
as claimed. Deep cleaning a bore and choke, temperature effect on patterns,
choke dimensions to bore diameter.
 One thing that seems overlooked and pointed out
by our more knowledgeable contributor's is allowing a choke to break in ! I see chokes for sale
in the classified's that are only fired three times or less.
I observed a pg 690 improve gradually over
thirty rounds fired. Also saw a dramatic improvement with a lightly polished 720 choke that performed
 so poorly when new i considered it a lost cause. Also noted early on that mass produced ammo was
inconsistent enough to convince me to handload all my ammo.