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Powder recommendation for short barreled 6.5 CM?

Looking for powder recommendations for an 18" suppressed 6.5 cm. Probably be loading 130 gr bullets. I know a faster burning powder may help me pick back up a little speed im loosing with the short barrel. I've always loaded H4350 with 140 gr bullets for a longer barrel, but may drop down to a little lighter bullet to pick up a little velocity with the shorter tube.
 
I'm under the impression the best powder is the best powder, regardless of barrel length.

Not a 6.5 CM, but same scenario. I bought a 6.5 PRC with a 20" tube a month ago with the idea of dropping down from my normal 140-150 class bullets to the 130 class to gain the speed back. It helped that I had 10 lbs of H-4831-SC & a butt load of 130 VLD's on the shelf to feed it.

Accuracy was so so, but curiosity got the best of me, so I bought some H-1000 to try.

That turned this gun into a hammer.

So the short answer, try your 4350....
 
I just purchased a Glenfield Model A 6.5 Creedmoor yesterday, couldn’t beat the price new in the box $280.00 out the door, loaded 10 rounds 120 grain BT 43.5 Stabill 7 shots around inch and half group I’m well pleased.
 

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