"breech flash" concerns...

[PapaCache]

I recently purchased a Hesse Model 47, my first AK style rifle. The gun functions beautifully, with only some minor feeding problems from certain "suspect" mags, but there is a problem which concerns me. After solo shooting about 5-600 rounds of Wolf Brand ammo through it, I let a buddy of mine empty a few mags. What I noticed was that every 7-8 rounds I saw a brief flash coming from the breech as the bolt cycled backwards just after ejection and before the new round was chambered. I'm talking about a really quick yellow flash. Is this a problem with the bolt lock-up, or could it just be due to unburned powed remaining in the chamber.Since I havent had a chance to try other ammo, I was thinking it might be the result of the inflexibility of the steel case allowing some "blow by". Is this a serious dangerous problem, or something which is acceptable with these rifles?
Thanks
PapaCache

[Brian]

No problem that I'm aware of. Mine all do the same thing Papa, and it seems to vary from round to round.

Brian

[sweede]

Might be the Wolf ammo. Ever so often I get a large muzzel flash using one of my Ak's with a large diameter brake. We are talking about a 10"x4" ball of fire! I don't know if it partially ignited gas or a "rich" shell...

[bob]

Sweede,maybe unburnt powder residue build up in the compensator.
I saw compansator cleaner in the Dillon catolog that claimed to be for this problem.
I wouldn't think this would be a serious problem ,but maybe iritating to competition shooters.

[Flight Line]

.