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Thread: Tight chamber and marks on projectile

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onlyhsh Tight chamber and marks on... 08-07-2024, 06:42 PM
7mmsaum Check for carbon ring/buildup... 08-07-2024, 06:44 PM
Tentman What's your load and velocity? 08-07-2024, 06:50 PM
grandpamac Greetings, Looks as though... 08-07-2024, 07:03 PM
30.06king grandpamac has identified the... 08-07-2024, 07:55 PM
Plinky As has already been said,... 08-07-2024, 07:04 PM
Roarless20 In your pics it appears that... 08-07-2024, 08:10 PM
Dazzh Those projectiles definitely... 09-07-2024, 12:26 AM
Roarless20 But only on one side? So... 09-07-2024, 10:18 AM
Roarless20 Those scratches are also on... 09-07-2024, 10:20 AM
Jaco Goosen Can you confirm that the... 09-07-2024, 01:30 PM
onlyhsh Hi team Lots of great... 09-07-2024, 03:10 PM
grandpamac Greetings Again, Reading... 09-07-2024, 06:31 PM
STC 1) borescope. teslongs are... 09-07-2024, 03:16 PM
Jaco Goosen Point 5 - That will be what... 09-07-2024, 03:42 PM
Plinky 1) my 6.5 develops a carbon... 09-07-2024, 06:06 PM
Happy Jack This thread has been... 09-07-2024, 07:21 PM
Micky Duck Had that with .308... 09-07-2024, 08:04 PM
Tentman Another easy thing to check... 09-07-2024, 07:32 PM
Remmodel7 What is your rifle. I have... 09-07-2024, 08:55 PM
Micky Duck stop looking at your rounds... 09-07-2024, 09:06 PM
Rated M for Magnum Autosol on a patch wrapped... 09-07-2024, 10:19 PM
Hugh Shields I agree with Plinky and was... 10-07-2024, 12:19 AM
Jaco Goosen If your willing to sent me... 10-07-2024, 01:21 PM
Micky Duck How will that sort the... 10-07-2024, 01:58 PM
Ross Nolan By eliminating a possible... 10-07-2024, 03:31 PM
Micky Duck Ok.......... So changing the... 10-07-2024, 04:56 PM
johnd Another question for you.... 11-07-2024, 07:46 PM
onlyhsh Yep checked that, definitely... 12-07-2024, 02:46 PM
onlyhsh Quick update At first felt... 12-07-2024, 02:55 PM
onlyhsh Mystery solved, sort of. The... 26-07-2024, 08:21 PM
onlyhsh Btw carbon didnt look too... 26-07-2024, 08:21 PM
grandpamac Mystery solved sort of... 27-07-2024, 12:35 PM
30.06king Now that the OP has a... 28-07-2024, 04:10 PM
Kelton Is that not a carbon ring? 27-07-2024, 01:00 PM
grandpamac Greetings Kelton and all,... 27-07-2024, 02:09 PM
Kelton I was also getting marks like... 27-07-2024, 02:18 PM
Kelton I’m by no means an expert but... 27-07-2024, 02:14 PM
Kelton It also wouldn’t shoot until... 27-07-2024, 02:19 PM
gqhoon Carbon ring for sure. Has... 27-07-2024, 03:16 PM
7mmsaum From memory General Motors... 27-07-2024, 03:22 PM
Kelton I used boretech carbon... 27-07-2024, 03:30 PM
johnd To me it looks like... On... 27-07-2024, 03:40 PM
Roarless20 Left side is chamber and... 27-07-2024, 05:11 PM
johnd Ha! Oh yeah, my bad. Anywho... 27-07-2024, 06:49 PM
onlyhsh Mystery solved round two.... 28-07-2024, 09:35 PM
DeonK Turn it into a 6 mm ARC mate.... 28-07-2024, 09:42 PM
onlyhsh One day I will mate, but I'm... 28-07-2024, 10:33 PM
blip A light ream might do it 29-07-2024, 07:35 AM
STC any ideas on what might have... 29-07-2024, 08:19 AM
Jaco Goosen From experience - Cleaning... 29-07-2024, 11:32 AM
onlyhsh Will try to find local first,... 29-07-2024, 01:08 PM
Micky Duck Just as well I didn't have... 29-07-2024, 01:25 PM
30.06king Micky Duck Just wanted to... 29-07-2024, 01:44 PM
BRADS Oh that will be really good... 29-07-2024, 02:28 PM
Micky Duck I know I know....but a howa... 29-07-2024, 03:09 PM
onlyhsh Honest no clue aye, could... 29-07-2024, 01:08 PM
Jaco Goosen MIcky Ill have to come over... 29-07-2024, 07:40 PM
SmokeyJason Aye aye capt, do tell more? 29-07-2024, 09:45 PM
Jaco Goosen Some years ago I were hunting... 29-07-2024, 11:19 PM
  1. 08-07-2024, 07:03 PM #4
    grandpamac is online now
    Member
    Join Date
    Dec 2019
    Location
    Okawa Hawkes Bay
    Posts
    3,171
    Greetings,
    Looks as though the projectiles are seated too long. The marks are from the rifling. Either the adjustment on your die has moved or if you have just started a new box of projectiles then they are a different shape. This does happen from time to time and the seating depth needs to be adjusted to suit. If it is a compressed charge then your projectiles may have crept forward.
    Regards Grandpamac.
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