Went to the range today to work up CEB loads for my 400 H&H and to put a few rounds down range through my 450NE Gibbs. The loads for my 450NE consisted of Hornady Brass fed 215M primers 100grns of H4831 and 450gr CEB NCs. Also loaded for my 450NE HDS Brass (Huntington) fed 215M 100grns H4831 and 480grn Woodleigh Softs. The Woodleigh load has been a mainstay through this gun producing approx 2120fps and good accuracy. All of the loads shot today were loaded during the same loading session. While I was letting the 400 cool I would put a few rounds down range with the Double. Put 6 of the CEB rounds down range then back to the 400 for a bit picked the double up again put 2 of the Woodlieghs down range then the next pair caught me by surprise both were extremely hot the gun was diffulcult to open and the primers were cratered. Shot 2 more no problem then 2 more after that and again hot loads. when I got home pulled the remaining Woodleigh loads all had 100grns of H4831 right OAL could not find any conflict.....I've easily put 200 rounds of the Woodleigh loads through this gun.....
Any thoughts would be of great help
Temp today was 85*f in the sun ammo was in the shade

Were all of the Woodleighs from the same box? I'd start by weighing every one from the batch you loaded and if all are the same, then mic the diameter.

I'm assuming all were loaded from the same canister if not lot of powder.

Check the case lengths of the empty cases
and see if their is a bit of difference
between the two lots, those that were "hot"
and those that weren't.

Brass flow past the chamber, even slightly can
increase pressure.

Other than that, I'll keep thinking.

Yes same box and same canister I will weigh them and mic them to see if there is any variance...

quote:

Originally posted by CCMDoc:
Were all of the Woodleighs from the same box? I'd start by weighing every one from the batch you loaded and if all are the same, then mic the diameter.

I'm assuming all were loaded from the same canister if not lot of powder.

Just a thought.... Would a blocked flash hole cause my problem?? Needed some media for my case tumbler and ended up going to a pet store buying crushed walnut thats used for lizards. Does a good job but is much finer than what is sold in gun stores as a case tumbler media... If a piece of walnut is caught in the flash hole could that cause a powder ignition problem??

Yes it could.

But i thought you said BOTH shots at the same time were "wrong", so what is the likelyhood of both suffering the same problem.

However, it only takes ONE case to be "sticky" to cause the gun to be hard to open etc etc.

Yes both the right and the left were "hot loads" but all the HDS Brass fired was tumbled at the same time so perhaps more than one piece of brass was contaminated.... How would a contaminated flash hole cause a hot loads??

By changing the pressure curve of the igniting powder.

Flash overs cause a change in the pressure curve.

quote:

Originally posted by 505G:
Check the case lengths of the empty cases
and see if their is a bit of difference
between the two lots, those that were "hot"
and those that weren't.

Brass flow past the chamber, even slightly can
increase pressure.

Other than that, I'll keep thinking.

Excellent thought - definitely needs to be checked.

All cases were trimmed prior to reloading.....

quote:

Originally posted by 505G:
Check the case lengths of the empty cases
and see if their is a bit of difference
between the two lots, those that were "hot"
and those that weren't.

Brass flow past the chamber, even slightly can
increase pressure.

Other than that, I'll keep thinking.