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  1. 338macgruber

    Rifle Scopes Anyone have IOR Tracking Issues on a .338 LM ?

    I have a very accurate custom built Rem700 .338LM & I have recently upgraded to an IOR 3.5-18 FFP MP8 reticle optic. It seems to jump around a bit- has anyone had similar issues? A friend of mine that was a medic at the 2013 SAC told me that IOR's have had issues in all their competitions...
  2. 338macgruber

    PACT Digital Scale / Dispenser & Tinfoil Hats?

    I picked up the PACT Dispenser/Scale Combo from Midway USA earlier this year- the scale jumps back & forth a plus or minus of 6.8 grains at random. I sent it back to Midway USA & they sent me a replacement. The replacement does the same thing as well. After reading other issues on the interweb...
  3. 338macgruber

    Range Report Kestrel w/ Horus ATRAG - Which Litz Data is best?

    I just picked up the Kestrel w/ Horus ATRAG & have the Applied Ballistics for Long-Range Shooting book by Bryan Litz - what is the recommended BC to plug into the horus software? G1 or G7 or ? Thanks in advance.
  4. 338macgruber

    Gunsmithing .338 Lapua Barrel Length vs Twist Rate ?

    I currently have a .338 Lapua with a 27" Shilen Select Match Grade barrel and 1/10 Twist. The chamber needs to be re-cut, and I am also looking at shortening the barrel significantly to help with stiffness & timing. Does anyone know if I can trim this down to a 20" barrel & still get away with...
  5. 338macgruber

    Gunsmithing Need help identifying Remington 700 DBM

    I got this Rem 700 DBM from a guy that acquired a "parts box" - I need help identifying the make/manufacturer of it. - Also it is a charcoal grey color, not black and seems to be a rough-powder-coated finish. I thought is was a PTG DBM, but the mag release button/lever does not look like theirs...
  6. 338macgruber

    Berger OTM Tactical 300gr 338 Lapua Load data

    I have a 27" Shilen Select Match 1-10 twist on a Remington 700 with the Seekins DBM for my setup. My current load that is working well is: SMK 300gr / Lapua Brass / Federal GM 215M Primer / 78.0gr RL-19 and I have been getting very nice groups at 2675fps (best 3 round group at 100yd has...
  7. 338macgruber

    Gunsmithing Seekins Precision 338 Lapua Bottom Metal Issue

    I have a Remington 700 .338 Lapua custom build that started as a 300 ultra mag ADL. I just picked up a Seekins Precision Bottom Metal & lined everything up with 2 the stock/action screws & am having feed issues. The base of the casing is catching a lip on the rear of the action (see pictures...