231 Hodgdon Powder/200gr. LHP/38º Un-burnt Powder

5.2 gr. 231/Berry's 200 gr. Target wadcutter/ 38º. While load is accurate there was quite a bit of unburned powder. Is it ambient temp. or???
Load worked very well before but with 5.6gr. powder and 45º. A bit snappy to say the least but accurate.
Ideas?
Thanks,
Mike

Is that a plated bullet?  Maybe try a tighter crimp with a taper crimp.  That load seems a bit heavy for a target load.  I am using 4.4 grains of 231 with a coated lead SWC and .464-.465 crimp.

Watercam,

 I agree with Troy 's note above .  I also use a 464-465 crimp although I find in my slide mount guns like to run between 4.7 to 4.9 of powered depending on the gun. With 200 gr LSWC .020-.025 above the shoulder. I started with this power and still use it 38 years later.  You will get a little unburned power but it is accurate. I've been running Brazos 200 LSWC coated on the short line at 4.7 -4.8 .  Keep in mind receipts vary for gun to gun and shooter to shooter.

Thanks for the replies folks! Love this forum. My crimp is tight enough so that the plating at the rim definitely has an obvious ring on the bullet. Will measure it.

231 isn't flammable, it's a seasoning for the range floor!

I had the same problem and tried all the suggestions and still had the same result.

I ended up switching to magnum primers and dropped my charge to 5.0gr and it helped a lot. I am using 180gr SWC's with an 11lb main spring.

Bruce:
Well it certainly was for me! Still shot well thought.

Ray:
Thank you Ray, coincidentally I did just that yesterday to test this week.
Where would be be without testing!